Abstract: A plastic screw cap includes two cap halves, which are produced as plastic injection-molded parts and have an internally threaded segment and an inwardly directed ring shoulder segment. The two halves of the screw cap can be pushed together, for example, on the inlet connection of the valve body of a flap valve by tongue-and-groove joints. One cap half has two hook-like ends, each of which is provided with an inwardly sloped clamping sidepiece and a groove for receiving the tongues formed on the two ends of the other half of the screw cap.

Abstract: An adjustable fastener includes a main body and an elastic portion. The elastic portion is connected to an end of the main body. The elastic portion is deformable thus changing a total length of the adjustable fastener.

Abstract: A laminated nut having a plurality of conical spring discs for use with a bolt assembly. Each of the discs is formed with a hex shaped outer periphery and a non-round central bore. The discs are assembled on top of each other forming a laminated stack. A threaded tension sleeve is located in the central bore and has a non-round outer periphery shape corresponding to the shape of the central bore of the discs. The tension sleeve has a threaded inner peripheral wall with the threads sized to fit the bolt assembly. The tension sleeve includes an upper flange to engage and hold the upper portion of the laminated stack and a lower flange to support the laminated stack. Application of a torqueing force to the outer, hex shaped periphery of the discs forces them to deflect and contact the threaded tension sleeve applying force along the length of the bolt assembly in a uniform manner to reduce clearance between the bolt threads and the threads on the nut tension sleeve.

Abstract: The invention relates to a connection element, in particular a plate nut, comprising a base body for attachment of an arbitrary component to a metallic planar object, in particular to a sheet metal. According to the invention, the base body comprises a securement portion the cross-sectional geometry of which deviates from a circular shape, the securement portion being at least partially positively receivable in a deformation in the sheet metal. The base body is, by means of a holding device, secured in the deformation against dropping out. In an alternative embodiment of the connection element, wherein unilateral accessibility to the sheet metal is sufficient, the holding device is formed by bead portions in a shaft area of the base body, which are plastically deformed into a bead by pull-out of a threaded bolt that is screwed into a thread portion.

Abstract: An interlocking suspension support hanger for mounting strut members off of a vertical threaded rod includes a pair of support hanger having a rectangular support body with a pivoting pin hole and a fastening pin hole on the support body and a recess opening leading to a center thread configured to fit around the vertical threaded rod. Further, a process for utilizing the support hanger to suspend a strut rack assembly from the vertically threaded rod without passing the assembly over the ends of the rod or removing the existing strut rack is disclosed.

Abstract: A locking device includes an outer ring and a locking disk is located on a first side of the outer ring and has a shaft which extends through the outer ring. An annular ring, a needle roller bearing, a first washer, a second washer, and a transmission disk are mounted to the shaft, respectively. The first washer is co-rotated with the shaft and the second washer is co-rotated with the outer ring. The transmission disk is freely mounted to the shaft by a clamp and includes first recesses and second recesses which are shallower than the first recesses. Balls are located between the first and second washers and movably engaged with the first recesses or the second recesses so as to control the movement of the transmission disk to be engaged with a rotatable part such as a grinding wheel of a sand wheel machine.

Abstract: A separation fastener assembly including a base and a housing positioned adjacent the base. A nut is disposed in the cavity. A bolt extends through an aperture in the base and including an end coupled to the nut. A washer is positioned proximate the nut and operative to retain the nut within the housing. The washer includes a plurality of segments. An actuator is carried by the housing and is in communication with the cavity. The actuator is operative to displace the housing relative to the washer from a first position radially retaining plurality of segments of the washer and retaining the nut in the cavity to a second position permitting radial expansion of the plurality of segments and permitting withdrawal of the nut from the housing.

Abstract: A quick installation mounting structure for use with a barcode scanning tunnel has at least one vertical post that defines a first plurality of axial slots formed along a length of the vertical post, at least one cross-member that defines a second plurality of axial slots formed along a length of the cross-member, at least one bracket for connecting the at least one vertical post to the at least one cross-member, and a plurality of fasteners. Each of the fasteners are received through the bracket so that an end of each fastener is received in one of the vertical post and cross member slots so that the fastener is rotationally fixed but axially moveable with respect to the vertical post or cross member.

Abstract: A fastener includes a threaded circular ring half divided along a plane intersecting a central longitudinal axis. One of the end walls is formed with a truncated conical load-bearing surface that is seated on a truncated conical thrust surface formed on a circular ring of a stress generator. The load bearing and thrust generating surfaces are arranged to present a conjugate pair of truncated conical surfaces to provide a favorable resolution of forces developed by torque applied to jack bolts distributed about an outwardly surrounding cylindrical stress generator body section.

Abstract: A golf club head includes a head body formed with a cavity, and a counterweight unit fitted in the cavity and including a sleeve body and an insert body. The sleeve body has a first end face, a second end face, first and second cavities, and first and second inner walls. The first inner wall has at least one first corner. The second inner wall has at least one second corner out of alignment with the first corner. The sleeve body further has at least one shoulder face formed at a junction of the first and second cavities. The insert body includes an insert portion removably inserted into the sleeve body, and an abutting portion extending outward from the sleeve body and abutting against the first end face. The insert portion has at least one flange engaging the second corner and having a stop face abutting against the shoulder face.

Abstract: A hinge assembly for a toilet seat, the hinge assembly comprising a hinge post for pivotally supporting the toilet seat on a toilet bowl, and a bolt embedded in the hinge post and configured to extend through an opening in the toilet bowl, the bolt having thereon a plurality of projections extending into the hinge post to distribute to the hinge post forces applied to the bolt.

Abstract: A detachable fixing device for engaging a bolt comprises a nut and a lever pivotally attached to the nut. The lever is provided with two lugs, whereas the nut comprises two articulated, threaded and spring-biased bolt grips. In a home position of the lever, the grips are moved apart to allow the loose slipping of the nut onto the bolt. In an active position of the lever, the grips are pressed on by the lugs, whereby the bolt grips engage the bolt with the thread.

Abstract: A locking device includes an outer ring in which a clutch disc and a locking disc are respectively connected at two opposite sides thereof A first pad is located on clutch disc and a second pad is located on the first pad. A plurality of balls are located between adjacent first and second protrusions of the first and second pads. A plurality of springs are biased between the far first and second protrusions. A screw bolt connected with a grinding wheel is threadedly extended through the locking disc. When the outer ring is rotated in first direction, the balls do not fall into the recesses defined in the locking disc so as to push the clutch disc to lock the grinding wheel. When the outer ring is rotated in second direction, the balls fall into the recesses and the clutch disc is loosened from the grinding wheel.

Abstract: A clamping gap nut, comprising: an internal thread (2) about a longitudinal axis (A) of said clamping gap nut; at least two gap ends (3, 4) which face each other tangentially and between them form a gap (5); and at least one tensioning element (10; 10a) connected to each of said gap ends (3, 4), for exerting a force on said gap ends (3, 4) which causes a relative movement of said gap ends (3, 4) in a tangential direction, wherein said at least one tensioning element (10; 10a) is connected, angularly movable, to at least one of said gap ends (3, 4) via a joint which compensates for a change in direction of said force caused by said relative movement of said gap ends (3, 4).

Abstract: The invention relates to a retaining device for retaining objects on a vehicle wall, comprising: a supporting element (4) for placing on a front side (2) of the wall (1) with devices (5) for retaining one or a plurality of objects (6) and a fastening element (8, 9) for locking the supporting element (4) on a rear side (3) of the wall (1), as well as a method for mounting objects with this retaining device. In order to reduce the installation cost, and in order not to be dependent on the supporting wall thickness, the fastening element (8) is pin-shaped and has a head (9) at one end so that it can be inserted through an opening (7) in the wall (1) and can be prevented against sliding out in one direction, and the supporting element (4) comprises a connecting device (13) with which the supporting element (4) can be solidly connected to the fastening element (8) projecting from the front side (2) of the wall.

Abstract: An elasticity limit (limit of yieldingness resistance) of a fastened member (bolt's seat face) increases (an elasticity area expands) due to a plastic deformation of the fastened member by fastening a bolt in an initial fastening step, and the plastic deformation (yieldingness) of the fastened member is properly prevented from progressing even if a thermal stress acts after a final fastening step. Thus, decrease of a fastening shaft force of the bolt can be prevented properly despite removal of the thermal stress.

Abstract: There is provided an insert nut, having an outer hollow portion made of a resin material and an inner hollow portion made of a metal material. The outer hollow portion has a projection functioning as a male screw or wedge formed on an outer surface thereof. The inner hollow portion has a female screw formed on an inner surface thereof. The inner hollow portion is press-fitted to the outer hollow portion by inserting one end of the inner hollow portion into the outer hollow portion to reach a final position. Further insertion of the inner hollow portion is prevented beyond the final position. Said one end of the inner hollow portion is caulked with the outer hollow portion.

Abstract: A fastener includes a threaded circular ring half divided along a plane intersecting a central longitudinal axis. One of the end walls is formed with a truncated conical load-bearing surface that is seated on a truncated conical thrust surface formed on a circular ring of a stress generator. The load bearing and thrust generating surfaces are arranged to present a conjugate pair of truncated conical surfaces to provide a favorable resolution of forces developed by torque applied to jack bolts distributed about an outwardly surrounding cylindrical stress generator body section.

Abstract: There is provided an insert nut, wherein a dies is pressed on one surface of a predetermined metal plate 7 to form a screw portion 8, so as to form a patterned portion 9 on the other surface of the metal plate by forming the screw portion, wherein the metal plate 7 is wound such that the screw portion 8 to become a female screw 2 is located inside so as to form a cylindrical form, and then the opposite edges 7a, 7b of the wound metal plate are connected together to form a cylindrical shank portion 3, wherein the outside surface of the exposed patterned portion of the shank 3 is covered with a resin layer 6 such that projections 5 of a synthesis resin is formed at the outside thereof.

Abstract: A structural screw device for a radiator assembly includes a frame and four screw members. The frame with four corners provides at least a leg post with an axial through hole respectively. The respective screw member is inserted into the leg post and the main body of the screw member is surrounded with an elastic member. The axial through hole of the leg post provides a step at intersection of the first and second hole sections. The free end of the leg post has split paw portions and each of the paw portions has an inner projection such that the neck section is caught with the projection while the screw member is inserted into the through hole in a way of the engaging section extending to the paw portions and the elastic member being biased against the step. Therefore, the projection is capable of being propped up to be away from the neck section and restoring to hold the neck section.

Abstract: A series of high security fastener constructions feature rotatable anti-theft shrouds mounted on locking wheel nuts and wheel bolts designed for vehicular wheels. Each construction features (1) a fastener body having a first body end adapted to accommodate a key receiving pattern or member, a second body end having thread pattern extending therefrom, and a shroud receiving portion located between the first and second body ends, (2) a shroud concentrically mounted on the shroud receiving, and (3) a shroud retaining system for retaining the shroud for rotation relative to the fastener body such that the shroud will rotate under an applied torque prior to the fastener rotating when it is installed at a design installation torque.

Abstract: An encapsulated fastener includes a nut adapted to receive a bolt. The nut is encapsulated by an encapsulation including an extension, which includes a tube adapted for receiving a portion of the bolt and a flange adapted for engaging a face of the nut. The encapsulation extension is placed on the nut in an overmolding tool, wherein an encapsulation base is injection molded over a portion of the encapsulation extension. The encapsulation base encapsulates the nut, except for its bore, which is sealed off during the overmolding process by a spring-mounted mandrel. Alternative embodiments of the invention include tubes with different configurations for contacting the bolt whereby the tube or cylinder is reinforced. A method and tooling for manufacturing the encapsulated fastener are also provided.

Abstract: A trimmer having first and second cutting blades. The first and second cutting blades are mounted so that first and second flat surfaces, respectively thereon, face and are substantially parallel to each other. A drive causes at least one of the first and second cutting blades to move relative to the other of the first and second cutting blades. At least one fastening assembly has first and second facing shoulders between which the first and second cutting blades reside. The at least one fastening assembly further has at least one biasing element that produces a force that biasably urges the first and second flat cutting blade surfaces towards each other.

Abstract: Embodiments of the present invention provide a unitary axle nut and tang washer assembly suitable for use in an aircraft landing gear wheel and brake structure. The assembly includes an axle nut in communication with a tang washer having a retainer wire groove formed therebetween; and a retainer wire held in the retainer wire groove.

Abstract: A unfastening-proof structure for nut sleeves of quick release locks and particularly to a structure capable of preventing a nut sleeve from being unfastened to achieve theft-thwarting function includes a quick release mechanism on a quick release lock which has a lock assembly on one end. The quick release mechanism includes a rod which has a threaded portion on a distal end to be coupled with a nut sleeve. The nut sleeve includes a rotary tray, an elastic element, an inner sleeve, a barrel and a plug. The inner sleeve is disengaged with the barrel after the quick release lock is in a locking condition so that when an external force is applied to turn the nut sleeve, an idle rotation is formed. Therefore the nut sleeve cannot be unfastened to achieve the theft-thwarting effect.

Abstract: A blade clamp assembly for retaining a rotary blade on the arbor of a rotary tool includes a blade washer for engaging the blade to hold the blade on the arbor and a clamp assembly threaded into the arbor to clamp the blade washer against the blade. The clamp assembly includes a planetary gear system for transmitting torque applied to the clamp assembly to the blade washer, wherein the planetary gear system multiplies the torque transmitted to the blade washer so that the torque transmitted to the blade washer is greater than the torque applied to the clamp assembly.

Abstract: A split nut has two halves securely fastened to one another by magnets. The magnets may be attached to the nut or the nut itself can be magnetized. The magnets secure the two halves together so that the threads of each half are in alignment and the nut may be moved along a threaded shaft. The nut may be attached to a threaded shaft anywhere along the length of the shaft. The nut has the ability to realign or reform a damaged portion of the threaded shaft. The nut can also be used for tightening, in the manner of a conventional nut. Moreover, the nut can be used for extracting by pushing, as for example in removing steering wheels for a steering column. Also, if provided with a gasket, the nut can stop leaks.

Abstract: A double nut for a controlled fixing of a component using a bolt connection, comprising a pulling sleeve having an internal thread adapted to be screwed onto a threaded end of a bolt, and a pressing sleeve adapted to be supported on the component. An internal thread of the pressing sleeve is adapted to be screwed onto an external thread of the pulling sleeve, and engages such external thread to such an extent that the internal thread of the pressing sleeve is spaced by a distance equaling several threads from that end of the pulling sleeve that faces the component. The external thread of the pulling sleeve is furthermore adapted to threadedly receive a pull bushing of a bolt-tightening cylinder that has a support bushing adapted to be supported on the component and to extend over the pulling sleeve and the pressing sleeve.

Abstract: A fixed pillar with heat loss is a fixed pillar for losing heat. The fixed pillar with heat loss includes a metal body, a screw thread and a plurality of grooves. The metal body is a hollow body. The plurality of grooves is respectively set on two sides of the metal body and communicating with each other. The screw thread is set on one end of the metal body to fix a circuit or other electric devices. Air flows into one side of the metal body and then passes through the inner part of the metal body and last flow out from another side of the metal body. Accordingly, the metal body exchanges heat with the air to lose the thermal energy quickly.

Abstract: Disclosed herein is a fastener nut. The fastener nut includes a first section, a second section, and a third section. The first section has a threaded inner diameter. The second section has an outer annular groove. The third section is between the first section and the second section. The first section, the second section, and the third section are integrally formed together as a one-piece member. The second section is configured to be removed from the first section at the third section.

Abstract: An arrangement has a first component, a second component, and a connecting element for connecting the first component to the second component at a distance from one another, the first component, at least at an end that is to be connected to the second component, being in profiled section, in particular tubular, form. The connecting element has an axially moveable spacer piece for bridging the distance between that end of the first component which is to be connected and the second component, and also has at least one clamping piece, that can be brought into contact in a clamping manner with a wall of the first component, and furthermore an actuating mechanism that is operatively connected to the spacer piece and the clamping piece in such a manner that when the actuating mechanism is actuated, the spacer piece moves in the axial direction until it comes into contact with the second component and the clamping piece is brought into clamping engagement with the wall of the first component.

Abstract: A clamp for use in forming parts is disclosed. The clamp is durable and easily installed, thereby resulting in superior efficiency.

Abstract: A telescopic captive fastener has a knob, a ferrule, a spring, and at least one sleeve. The sleeve extends telescopically between the ferrule and the knob.

Abstract: A sealing member is composed of upper and lower holders which are molded members formed of rubber or resin. The upper holder has a stopper having a tubular shape with a flange inserted on its inner periphery. The lower holder has an inserted nut and outer threaded member on its inner and outer peripheries. In fixing a battery, after the outer threaded member of the lower holder is secured to a seat of a body frame by being screwed therein, the case is attached so that an expanded portion covers the lower holder, and then the upper holder is attached in a hole of the expanded portion. Subsequently, a bolt is presented through a battery holder, and is tightened by being screwed into the nut of the lower holder.

Abstract: A swivel nut comprising a body (10) having a threaded bore (130), the body comprising a ridge (11) which circumferentially extends about an outer surface, the body further comprising a first surface (12) which extends normal to a body bore centerline (CL), a tapered member (20) having a tapered surface (22) and a bore (23), the tapered member further comprising a second surface (23) which extends normal to the body bore centerline and which second surface cooperatively engages the first surface, the tapered member comprising a groove (21) which extends about an inner surface, and the groove cooperating with the ridge to connect the body and the tapered member while allowing the tapered member rotational movement with respect to the body.

Abstract: A fastening nut includes an operation member, a female threaded member, and a control device. The operation member is operable by an operator to rotate in a fastening direction and a loosening direction. The control device is coupled between the operation member and the female threaded member and includes a plurality of movable members, such as nut segments and wedge members, and a plurality of control members, such as rollers and balls. The movable members are arranged in a circumferential direction about the nut axis. Each movable member is movable between a first position and a second position. The first positions enables fastening of the female threaded member onto the male threaded member. The second position enables loosening of the female threaded member. The control members either prevent or allow the movement of each movable member from a first position to a second position.

Abstract: A washer has a body having an axis and provided with a first face surface located at one axial side and adapted to cooperate with a nut, a second face surface located at an opposite axial side and adapted to cooperate with an object to be assembled or disassembled, and at least one additional turning resistant surface adapted to cooperate with a bolt, the additional turning resistant surface of the body being formed as a frictional surface providing a friction between the body and the bolt to frictionally impede the bolt from turning and at the same to allow the bolt to be displaced in an axial direction when the nut is turned, the second face surface of the body being formed to provide a friction between the body and the object and therefore to impede the body from turning, and the first face surface of the body being formed with a smaller frictional characteristic than the second face surface of the body to at least reduce dragging of the body into turning by the turning nut; and a fastener is provided with

Abstract: A fixing clamp for anchoring a component within a hole in a support plate includes an anchoring part having two side walls and a transverse wall, a generally planar locating strip projecting outwardly, an expanding tab projecting upwardly that defines a window in the side wall, and an inwardly bent edge strip on an end of the expanding tab. The fixing clamp also includes a movable threaded plate initially supported by the edge strip. The fixing clamp further includes a holding plate for the component and a fixing screw, and the fixing screw is threaded onto the threaded casing of the threaded plate, such that tightening of the fixing screw displaces the threaded plate downwardly along a longitudinal axis of the threaded portion of the fixing screw while deforming the expanding tabs outwardly until the expanding tabs are clampingly engaged with the support plate.

Abstract: A join structure comprises a box section column and spit T-section joined by a high strength bolt and a method secures a nut to an inside of the box section column. A Torque-Shear type high strength bolt is tightly tightened by a controlled tension and a joining method of a steel member uses that bolt. The join structure is comprised of a box section column, a split T-section attached to its outer surface, and a high strength bolt inserted from the outside of the split T-section and fastened with the nut. The nut is secured to the box section column by joining a sleeve secured to a washer formed integrally with the nut and a sleeve of a nut holding part from the outside of the column. The Torque-Shear type high strength bolt has a pintail for controlling the torque at its top.

Abstract: A cage nut assembly is disclosed having a body defining a through bore. The cage is disposed about at least a portion of the body. The body is hexagonal in shape, while the cage defines a seam configured to be placed adjacent the coupling surface of the cage and base material.

Abstract: An assembly of a threaded fastener and a stemmed washer is provided, such as for applications in which a standoff is desired between a washer and a mating threaded fastener. The stemmed washer includes a washer portion and a standoff portion extending from the washer portion. The threaded fastener has a retaining structure extending about the washer portion and capturing the washer structure in an assembly with the threaded fastener. For example, the retaining structure may have a washer receptacle for the washer portion. The washer portion is captured in the washer receptacle by a deformed catch section below the washer portion.

Abstract: A locking device for a threaded fastener comprises a pair of washers each having a plurality of wedge cam sets that include a base-cam and a raised tooth-cam. When the washers are mated together in use, the wedge cam sets of each washer are placed into confronting engagement with those of the other washer, with the raised tooth-cams of each washer engaging the base-cams of the other washer. The base-cam surfaces are ramped so that, as the tooth-cams slide along them during relative rotational movement, the combined axial height of the two washers changes—decreasing during tightening and increasing during loosening so that unintended partial loosening of the fastener is offset by expansion of the washers to thereby maintain bolt tension. Raised shoulders at each end of the tooth-cams are used to inhibit the amount of relative rotational movement of the two washers in both directions.

Abstract: A cage nut assembly has a nut and a cage. The cage has a base having an aperture therethrough and a pair of flexible arm portions which are capable of supporting the nut off of the base. The cage nut assembly is welded to a workpiece. The workpiece is sent through an e-coat or ELPO bath. As the flexible arm portions of the cage support the nut off of the base, the possibility of the nut being stuck to the cage is reduced. A fastener is inserted through an aperture of the workpiece, through the aperture of the base and is threadedly engaged with the nut. As the fastener is torqued down, a force is applied to the nut such that the arm portions of the cage flex and allow the nut to come into contact and be secured against the base.

Abstract: The invention provides a cage nut assembly having a nut member and a cage member. The nut has a threaded aperture therethrough. The cage is capable of encaging the nut such that the nut has a limited range of movement within the cage in at least one dimension. The cage has an aperture therein sized and located to allow access to the threaded aperture of the nut within the range of movement of the nut. The cage has a plurality of protrusions, such as dimples or tabs, extending therefrom. At least one of the protrusions is formed in halves which abut against one another to define a seam therebetween. The protrusions are capable of being welded to a mating surface to secure the cage to a mating surface, and, substantially contemporaneously, the halves of the at least one protrusion are capable of being welded together along the seam.

Abstract: A washer has a body having an axis and provided with a first bearing face surface located at one axial side and adapted to cooperate with a nut, a second bearing face surface located at an opposite axial side and adapted to cooperate with an object, at least one third turning resistant surface adapted to cooperate with a thread of the bolt, the body having at least one resistive point arranged so that when the nut is turned and turns the bolt the body of the washer stops the bolt from turning and thereby the nut creates a pull on the bolt which elongates the bolt in an axial direction and applies to the body of the washer an axial force which overcomes the at least one resistive point so that a portion of the body of the washer is allowed to be pulled axially when the bolt elongates.

Abstract: The present invention concerns a fastener arrangement made of a component and a screw element with an area for the application of force for a turning tool, where the component and the screw element, when fastened to each other, are in contact with each other by way of contact surfaces, and where the contact surface of the screw element on the side facing the component, has a convexly curved outer surface, and where the contact surface of the component has a concavely curved inner surface, while the outer surface and the inner surface are positioned coaxially with respect to a common longitudinal axis, which runs through the component and the screw element.

Abstract: A nut assembly includes a base plate and a nut. The base plate includes a bearing surface with bore for the passage of a bolt or the like therethrough. The nut includes a bearing surface engaged with the bearing surface of the base plate. The said nut includes a bore engageable with a bolt or the like passing through the bore of the base plate. The base plate may include foot members disposed around the bore of the base plate.

Abstract: A fastener, such as a housing, for mounting to a structure, such as a panel, that has an aperture formed therethrough. The fastener includes a shank member and an annular nut member that is configured to align coaxially with the shank member. The shank member is inserted through aperture in the structure and the nut member is placed on the shank member. Teeth on the radially outwardly facing surface of the shank member engage a pawl, such as one or more teeth, on the radially inwardly facing surface of the nut member to lock the nut member to the shank member. Removal of the nut member is effected by rotating the nut member to disengage the pawl from the teeth, thereby permitting longitudinal displacement of the nut member off of the shank member.

Abstract: The locknut is adapted for axial engagement of a threaded shaft having an axis and an outer thread. The locknut has properties for limiting a tightening torque on the shaft to a predetermined torque value. In one aspect, a first member is adapted for engagement by a user and rotation about the shaft. A second member having inner threads is disposed in a rotatable, coaxial relationship with the first member. At least one deflection wall is included in the first member and is provided with properties for deflecting outwardly in response to a radial force. At least one deflecting element is included in the second member and is disposed to exert a radial force against the deflection wall. The deflecting element has a generally engaged relationship with the deflection wall at a torque level not greater than the predetermined torque to maintain the inner threads of the second member in an engaged relationship with the first member.

Abstract: A tamper resistant rotably shrouded security cap and tool for preventing unauthorized access to a fluid handling system. The shroud and cap have cooperating engagement means that allows the shroud to rotate freely about the security cap, such that a grip on the shroud will not turn the cap. The cap is provided with a grip resistant upper surface to discourage gripping with compression type tools such as pliers. Additionally, the cap is recessed within the shroud to make unauthorized access more difficult and is provided with any one of a wide ranging selection of non-standard keyway type tool fittings such that a custom designed tool is required to tighten or to loosen the cap. The shroud and cap system maybe configured as a cap, a plug, or a valve stem, among other variations. Only those with access to the security socket tool can access the system.