Abstract: A rotary cutting tool includes a replaceable cutting head and a tool holder. The replaceable cutting head includes a forward cutting portion and a rearward mounting portion. The mounting portion includes a male coupling member that includes a back-tapered conical external thread. The tool holder includes a female coupling member that includes an internal thread. When the rotary cutting tool is in a locked position, the external thread is threadingly engaged with the internal thread.

Abstract: A sealing bolt includes a seal head adapted to be mounted to the container lid, a seal stud adapted to be mounted to the container body, a pin connecting the seal head to the seal stud, a conductor in a transverse passage in the pin and a resilient member arranged for biasing the pin into a first position in which the conductor is compressed. The pin is movable against biasing by the resilient member into a second position by application to the seal head of a predetermined torque. The sealing bolt also includes a monitoring and detection unit including a transmitter and a detector coupled to respective ends of the conductor, and a processor coupled to the transmitter and the detector operable to determine that the pin has been moved into the second position for a first time when a signal detected by the detector has undergone a predetermined change.

Abstract: A compression screw comprising a threaded shaft and a head associated with the proximal end of the shaft. The head has a plurality of outwardly extending projections spaced from one another so as to define a plurality of recesses there between for receiving a screw drive in such a way that rotational force may be transferred from the screw drive to the screw. The projections of the head may be provided with suture fixation holes or a suture coupling may be positioned over the shaft so as to extend between the projections of the head.

Abstract: A screw assembly includes a screw and a washer mounted on the screw. The screw includes a screw head, a rotation portion formed on a top of the screw head, and an external thread formed on a bottom of the screw head. The bottom of the screw head is provided with at least one projection and at least one recessed portion. When the external thread is screwed into an article, the washer is compressed between the screw head and the article. The at least one projection and the at least one recessed portion press the washer, and the washer is expanded outward and forms an expansion. The at least one projection and the at least one recessed portion enhance an airtight effect of the washer.

Abstract: An assembly comprising first and second structural elements having aligned holes, a fastener that occupies at least respective portions of the holes without a surrounding sleeve, and a mating part that is coupled to the fastener. The fastener comprises: a head; a circular cylindrical shank extending from the head; a mating portion comprising external projections; and a transition portion disposed between the shank and the mating portion. The transition portion comprises a tapered lead-in section that meets the shank at a shank/lead-in intersection and a radiused lead-in section that meets the tapered lead-in section. The tapered lead-in section tapers gradually in a first axial direction toward the mating portion and has a first profile that is linear and a taper angle equal to or less than 20 degrees, while the radiused lead-in section curves abruptly in the first axial direction and has a second profile that is a circular arc having a radius.

Abstract: A cranial bone fastening device for temporarily fastening multiple cranial bone portions to a main body of a positioning device in order to orient the cranial bone portions relative to one another, wherein a pin-like fixing element portion is provided, one side of which is designed to contact the multiple cranial bone portions in order to secure the cranial bone portions to the main body of the positioning device upon interaction with a counter portion on the other side of the cranial bone portions.

Abstract: A method of maintaining first and second objects in a desired relationship. The method involves obtaining a fastener having a body with an elongate shank. The body has a head with a blocking surface. The shank is configured to engage a surrounding bore surface on or associated with at least one of the first and second objects to cause the shank to advance axially in a tightening direction while turned in one direction. The fastener body is engaged at a location spaced from the head to turn the shank in the one direction, thereby causing the shank to draw the head so as to move the blocking surface on the head towards a selected holding position relative to one of the first and second objects wherein the fastener is in a fastened state. The invention is also directed to the fastener construction.

Abstract: An adapter for use with a connector of a shipping container is disclosed, the adapter including a support body, a bolt and, optionally, a nut that can thread to the shaft of the bolt. The support body includes a front body portion having a through bore for passage of a shaft of the bolt and a U-shaped body portion extending from the front body portion, the U-shaped body portion including pair of elongate posts. The bolt is rotatable from a first position in which a bolt head rests against longitudinal ends of the pair of elongate posts to a second position in which the bolt head is received between the pair of elongate posts and in which the pair of elongate posts prevent the bolt head from rotating. The adapter provides the connector with an outwardly protruding shaft to which devices or apparatus can be coupled.

Abstract: A fuel cell device includes a fuel cell body, a case and a pin having one end contacting a part of the fuel cell body. A through hole is formed in the case. The through hole penetrates the case from the outside to the inside. The pin is inserted in the through hole and provided with a sealing member formed on at least a part of an outer circumferential surface. The through hole has a constant inner diameter from a position inside the case to a border with the outside. In the through hole, an inner diameter between a portion of the constant inner diameter and the border with the outside is larger than the constant inner diameter. The pin has an opposite end located inside the through hole in a portion from an end of the portion of the constant inner diameter to the border with the outside.

Abstract: A security mounting arrangement can include a first fastening member, a second fastening member, a sleeve, and a third fastening member. The first fastening member can be a bolt. The second fastening member can be a nut threadingly engageable with the first fastening member. The sleeve can have an aperture configured to receive the second fastening member and a portion of the first fastening member. The third fastening member can be a bolt extendable through an aperture of the first fastening member and threadingly engageable with the inwardly-facing threads defined by the third fastening member. The third fastening member can have a security head.

Abstract: In the threaded joint for pipes, a coating having a Vickers hardness greater than or equal to 310 is formed on a threaded portion of the box and an inner face of the box corresponding to a seal portion. The seal interference amount ratio ?/D of the seal portion in a pipe circumferential direction is greater than or equal to 0.002, where D is a seal diameter defined as an outside diameter of the pin at a seal point that is a point on the outer peripheral face of the nose of the pin at which the outer peripheral face first comes into contact with the inner peripheral face of the nose of the box and ? is an interference amount defined as an amount by which the outside diameter at the seal point is reduced by the box when the pin and the box are threadedly connected with each other.

Abstract: A nut includes a thread portion and a pressing portion. The thread portion is formed at an end of the nut. The thread portion includes a threaded inner wall surface for engaging with a screwing shaft of a screwing piece. The pressing portion is extended from the thread portion and formed at the other end of the nut. A wall thickness of the pressing portion is smaller than a wall thickness of the thread portion. An outer wall surface of the pressing portion is aligned with an outer wall surface of the thread portion.

Abstract: A screw fastener can include a first screw and a second screw. The first screw can include a head and a threaded portion coupled to the head. The head can define a first position portion thereon. The second screw can define a threaded hole therethrough configured to engage with the threaded portion. The second screw can further define a second position portion adjacent to the threaded hole, corresponding to the first position portion.

Abstract: A lift pin may include a head, a retainer and a shaft disposed between the head and the retainer. The shaft may include first and second portions and a step disposed therebetween. The first and second portions may include first and second diameters, respectively. The first diameter may be larger than the second diameter. The head may be disposed on an end of the first portion opposite the step and may include a third diameter that is larger than the first diameter. The second portion may be disposed between the first portion and the retainer. The retainer may be attached to the shaft and may be movable in a radial direction relative to the shaft between first and second positions.

Abstract: Provided is a nut into which a bolt (10) including a male-threaded portion with a male-threaded external diameter d and a male-threaded core diameter d1 is screwed, wherein a bolt insertion side end of a female-threaded portion (21) formed in a nut body (20) is provided with an incompletely threaded female portion (22) that is formed by one to three pitches so that an internal diameter dimension D is larger than (d+d1)/2 and is smaller than the male-threaded external diameter d. Accordingly, even when the bolt is screwed into the nut in the inclination direction, the bolt may be rotated about a contact surface with respect to the incompletely threaded female portion (22), and hence seizing may be prevented.

Abstract: A fixing unit for a fastening device to fix a first vehicle component to a second vehicle component is disclosed. The fastening device includes a plate element fixed to a coupling section on an essentially flat surface of the first vehicle component. A threaded stud extends from the plate element and is configured to be arranged in a receptacle of a second vehicle component.

Abstract: A drive-in bushing (14) is provided for the releasable connection of a fiber-reinforced plastic first component of a motor vehicle structure to a fiber-reinforced plastic or metal second component of the motor vehicle structure. The drive-in bushing (14) has a sleeve-like basic body (15) manufactured from a metal and having an external wall (16) formed without a thread, and an internal wall (17) formed with an internal thread (18). The drive-in bushing (14) can be driven into a recess in the fiber-reinforced plastic of the first component (11). A screw penetrates a recess in the second component and can be screwed into the internal thread (18).

Abstract: A self-drilling bolt and nut assembly includes a nut which has a window to permit visual inspection of the fastener thread upon engagement with the nut. The nut also includes a protective cap or receives a protective cap so that upon threadably engaging the fastener with the nut, the drill tip of the fastener is automatically received in the cap. The nut also has at one end a plurality of projections to enhance the locking engagement. The self-drilling bolt may have an integral washer and employ a clamping plate engageable against the washer.

Abstract: A fastener for a fitness equipment superstructure includes a stud member and a peg member, both of which include a head and a body. The body is sized to be received in holes on uprights of the superstructure to attach one or more accessories thereto. The head is significantly larger in diameter than the body, but thin with a circular profile and radiused corner. The stud member includes a thread portion which mates into a threaded recess in the body of the peg member, with the heads opposing each other on opposite sides of the upright.

Abstract: Provided is a fastening member for appropriately ensuring strength of a peripheral edge part of a tapered-cylindrical-body-shaped part and appropriately reducing external dimensions.

Abstract: Cylinder rings having single-start nut and bolt threads matched to one another and axial stop surfaces, running perpendicularly to the cylinder axis, between the cylinder rings are distinguished by the fact that the stop surfaces (11, 12) assigned to the nut thread (3) and the bolt thread (4) extend in an axially rising manner over at most one thread turn and each have at the end a step surface (13, 14) between the axially offset stop planes of the stop surfaces (13, 14).

Abstract: A self-drilling bolt and nut assembly includes a nut which has a window to permit visual inspection of the fastener thread upon engagement with the nut. The nut also includes a protective cap or receives a protective cap so that upon threadably engaging the fastener with the nut, the drill tip of the fastener is automatically received in the cap. The nut also has at one end a plurality of projections to enhance the locking engagement. The self-drilling bolt may have an integral washer and employ a clamping plate engageable against the washer.

Abstract: A through bolted connection hardware includes first and second nut-bolt-washer connectors each having a base portion and a bolt portion extending through the base portion. A threaded rod and a pair of threaded connectors bridge between the first and second nut-bolt-washer connectors. Specifically, a first bolt portion of a first nut-bolt-washer connector threadingly mates with a first threaded connector, and a second bolt portion of a second nut-bolt-washer connector threadingly mates with a second threaded connector. The threaded rod threadingly mates with the first and second threaded connectors. The assembly passed through an opening in materials to be joined and the assembly is tightened to secure the joint.

Abstract: A fastener system for composite structure providing electromagnetic energy (EME) protection incorporates a fastener having a head with an engagement surface and a shank having a threaded end. A nut is received on the threaded end of the fastener, with the nut also having an engagement surface. At least one of the head engagement surface and the nut engagement surface incorporates a reduced area portion for engagement of a first mating surface or second mating surface, respectively.

Abstract: A fastener arrangement includes a threaded member having threads extending from a first end to a second end. The threads have a thread contour provided by a load and clearance flank surfaces joined to one another by a crest and root. For the external threaded member the crest provides a crest diameter, and a root provides a root diameter and is arranged between adjoining threads. At least one thread near the first end has a weakened thread contour that decreases rigidity of the one thread compared to other threads, enabling axial loads to be distributed more evenly between the threads.

Abstract: TOLERANCE COMPENSATOR, of the type used to attain the fastening of two elements together that may be located at a slightly variable distance, which is utilized, for instance, in automobile vehicles and is formed, at least, by an inner nut and an outer nut, in which said inner nut can a sheet coiled on itself, it being fitted with at least two threaded perimeter sectors for said outer nut; at least one side thereof also being the support for respective retaining elements towards the inside of said inner nut that provide friction spots against said threading of said screw.

Abstract: There is provided a seizure prevention bolt capable of preventing seizure caused by oblique insertion as well as seizure caused by invasion of a foreign matter such as a spatter. An incomplete screw portion 12 having an outer diameter d that is larger than an inner diameter D1 of a female screw 20 and smaller than (D+D1)/2 is formed at a front end of a normal screw portion 11 formed in a bolt shaft over one or more pitches, and a vertical groove 14 for cutting out a foreign matter such as a spatter is formed in the incomplete screw portion 12. D in the above expression is a nominal diameter of the bolt.

Abstract: A wave threaded fastener and system. A wave thread extends from the outer surface of the body and is made up of a profile wave and a lateral wave. The profile wave includes a plurality of profile crests and profile roots defining a plurality of profile thread widths. The lateral wave includes at least one lateral crest and at least one lateral root defining at least one wave period. Each wave period forms a period arc having a period arc angle and the sum of all period arc angles about the lateral wave equals three hundred and sixty degrees. Each of the profile crests and roots are aligned with corresponding lateral crests and roots and the wave thread travels one profile thread width per each period arc traveled.

Abstract: A number of variations of the invention may include a method including providing a front lower control arm attachment system including a sleeve locator stamping and at least one threaded sleeve extending there through, and attaching the front lower control arm attachment system to a vehicle engine cradle. A number of variations of the invention may include a front lower control arm attachment system including a sleeve locator stamping and at least one threaded sleeve extending through the sleeve locator stamping and secured thereto.

Abstract: The threaded engagement device includes a female thread portion and a male thread portion, which are engaged to each other through a plurality of threads formed along the axis direction. Each thread of the female thread portion and the male thread portion of the threaded engagement device includes a crest, a root, a stab flank and a load flank. The root of the female thread portion has a straight portion extending along the axis direction and a concave rounded portion. The root of the male thread portion has a concave rounded portion, wherein the radius of curvature of the rounded portion formed in the root of the male thread portion is larger than the radius of curvature of the rounded portion formed in the root of the female thread portion.

Abstract: A sealing system adapted for use on an item of equipment having a male threaded component including a male threaded section having an interior portion. The sealing system comprises a female threaded component having a female threaded section and a scraper seal groove. The sealing system also comprises a scraper seal that is configured to be disposed in the scraper seal groove of the female threaded component and fit into the male threaded section of the male threaded component. The forces produced by the item of equipment pass directly to the female threaded component from the male threaded section. A method for sealing an interior portion of a threaded section of the male threaded component comprising providing such a sealing system and screwing the male threaded component, into the female threaded component.

Abstract: An exemplary electronic device includes a housing, a lever, and a locking device securing the lever on the housing. The housing includes a bottom plate, a top plate and a side plate connecting the bottom plate with the top plate. The locking device includes a nut having a main body extending downwardly into the lever, a screw extending upwardly through the top plate into the nut, and gaskets sandwiched between the top plate and the nut. The lever is disposed and sleeved on the nut with a gap defined between a top face of the lever and a bottom face of a head of the nut.

Abstract: A fastener assembly for mounting a component to a bracket attached to an inner surface of the skin of an aircraft wing such that the component is thermally and electrically isolated from the bracket is disclosed. The component and bracket each having mounting holes and the fastener assembly comprises a fastening element having a shaft to extend through said holes, first and second isolating members mountable on the shaft on either side of the bracket such that the bracket is sandwiched between said first and second isolating members and, a retaining element threadingly engageable with the shaft protruding through the second isolating member to clamp said first and second isolating members together against said bracket. One of the isolating members has a central portion that protrudes through said mounting hole in the bracket and the other isolating member comprises a recess to receive said central portion.

Abstract: An insert is configured for anchoring within a cored panel and has a wide flange on one end, a sacrificial cover and threaded pin on its opposite end and a nut captured therein. The panel is prepared by forming a countersunk hole therein and filling or coating such opening with an adhesive. The insert is fitted into the hole such that the flange is positioned against one surface of the panel while the sacrificial cover and threaded pin protrude from the opposite surface. A screw fixture is threaded onto the threaded pin to maintain the insert in place while the adhesive cures. Subsequent removal of the screw fixture and sacrificial cover completes the anchoring process and exposes the nut that is captured within the insert for receipt of an appropriate fastener.

Abstract: A system for fastening a cover to a body of an explosion-proof enclosure using a plurality of fastening devices. Each fastening device can include a first load distributing member disposed on a body flange of a body of the explosion-proof enclosure. Each fastening device can also include a second load distributing member disposed on a cover flange of a cover of the explosion-proof enclosure. Each fastening device can further include a fastener positioned atop the first load distributing member, where the fastener traverses the first load distributing member, the cover flange, and the body flange. Each fastening device can also include a fastener receiver positioned under the second load distributing member and mechanically coupled to the fastener.

Abstract: A thread-producing nut for a screwed connection, wherein a core hole which is provided with thread turns is designed for positively locking, frictionally locking and releasable connection to an, in particular, cylindrical bolt or pin, in such a way that the thread turns have completely formed thread turns in certain sections when viewed in the circumferential direction and that free spaces with thread turns which are formed incompletely in terms of their height are provided between the completely formed sections of the thread turns. Furthermore, a blank for manufacturing the nut and a screwed connection composed of such a nut and a bolt are disclosed herein.

Abstract: A tool-free blade change system includes a sun gear, an arbor bolt including a threaded portion configured to threadedly engage a threaded bore of a power shaft, and a plurality of pins in fixed relationship with the threaded portion, a plurality of planetary gears engaged with the sun gear and located axially outwardly of the sun gear, each of the plurality of planetary gears mounted on a respective one of the plurality of pins, and an outer ring gear engaged with each of the plurality of planetary gears, wherein the sun gear is rotatable with respect to the outer ring gear.

Abstract: The invention provides a sealer to be used for a bolt including a sprayed preservative coating coated onto at least a threaded portion. The sealer contains a wax therein in the range of 1 to 10 mass % both inclusive.

Abstract: A thermally-insulative insert device and method of use of same is disclosed. Specifically, the thermally-insulative insert device, comprising internal and external threads, allows attachment of an assembled part to a heat source while reducing heat transfer between the assembled part and the heat source. It is also an aspect of the present disclosure to provide easy-to-implement and cost-effective methods of using and assembling the thermally-insulative insert device.

Abstract: A fixing-device that fixes a second member to be fastened to a first member to be fastened, the fixing-device includes, a base fixed to the first member to be fastened, a sprung-washer attached to the base and interposed between the base and the second member to be fastened, and a fastener that fastens the second member to be fastened and the base to each other, wherein the sprung-washer includes a threaded-portion insertion-hole into which a threaded-portion of the fastener is inserted, an edge-portion that is formed around the threaded-portion insertion-hole, and with which a pressing-portion provided in the fastener comes into contact and that is thereby pressed when the fastener is tightened, and a leaf-spring that extends from the edge-portion forward in a direction in which the fastener is inserted into the threaded-portion insertion-hole and outward, and that has a bent-portion midway along the length of the leaf-spring.

Abstract: An improved nut-and-bolt assembly reduces tensile stress concentration on the bolt. The assembly has a specially designed nut with a tapered region extending from the nut crown and threaded with the first several bolt threads. The cross sectional area of the tapered region decreases linearly as a function of distance from the crown whereby the tapered region has a convex profile. Each of the bolt threads engaging the tapered region take up an approximately equal amount of longitudinal stress on the bolt.

Abstract: Embodiments of the invention provide threaded elements alone, in mating pairs, or in conjunction with other elements. Embodiments of the invention also provide for design and fabrication of such threaded elements without violating minimum feature size design rules or causing other interference issues that may result from the fabrication of such thread elements using a multi-layer multi-material electrochemical fabrication process.

Abstract: A fastening arrangement for attaching a floor to a support structure is provided. The arrangement includes across beam, a floor panel deposited on the cross beam, a fork bolt attached to the cross beam via a barrel nut, and a lug bolt rotary connected to the fork bolt for attaching an attachment element to the cross beam. The fork bolt has a head for accommodating an end of the lug bolt. The fork bolt has a foot with a thread to be screwed into a thread of the barrel nut. The floor panel has an opening for accommodating the head of the fork bolt, such that the floor panel is attached to the cross beam by the fork bolt. The head of the fork bolt is rotatable in the opening of the floor panel for screwing the fork bolt into the barrel nut by rotating the lug bolt.

Abstract: An unconventional bolt includes a main body having two heads, and two threaded rods respectively formed at the external surface of each head coaxially with the main body, wherein the cross section of each head has a noncircular shape, and the axial projection of the cross section of the middle of the main body is located in the noncircular axial projection of each head of the main body. The unconventional bolt has a simple structure and a convenient assembly, and can improve the strength and rigidity of the nested profiled components after the connection; and the fastening device using the unconventional bolt can not only support the component but also reinforce it, thus effectively preventing the nested profiled components from transforming.

Abstract: A screw coupling between two bodies, one having an external screw thread and another having an internal screw thread complementary thereto, which screw threads are superimposed onto two base surfaces monotonously narrowing and widening respectively in the direction of a central axis, the longitudinal section of each of these screw threads relative to the central axis being a periodic univalent function which is continuous at least at the inflection points. The screw coupling has the following features: the first and second derivatives of the longitudinal section of each screw thread along the base surface is a continuous function; the second derivative of the longitudinal section of each screw thread relative to the central axis is a continuous function at least in the region of the inflection points; and the screw threads are in mutual contact over a substantial surface area differing from line contact.

Abstract: A screw connection, in particular for machine construction, special machine construction and plant construction, comprises a first element with an external thread and a first head part, and comprises a second element with an internal thread and a second head part. When the first element is screwed fully into the second element, a surface between the first head part and the second head part is formed as a smooth circular cylinder which is suitable in particular for pinning. In this way, a particularly simple screw connection is created which simultaneously serves for pinning and which is versatile.

Abstract: A clamp having a pair of clamping tangs hinged together at one end and connectable together at the other end by means of a screw and nut. The screw has a main threaded section for tightening of the nut onto a seat on a tang. It also has an unthreaded section of shaft, over which the nut can move freely. At the distal end of the screw is a further short threaded section, to retain the nut on the screw, when disconnected from the main threaded section. The nut can be removed totally from the screw by engaging with the short threaded section, and rotating to disengage. The to other end of one tang having a clevis into which a crossbar on the screw connects, the other tang also having a clevis into which the screw pivotally fits, the upper surface of the clevis providing a seat for the nut.

Abstract: A modular system for manufacturing structures for machine, special machine and plant construction comprises a plurality of components which are of elongate form and which each have at least two orifices, wherein two components can be connected to one another in a play-free manner by means of a connecting element (1000). This permits the construction of particularly solid and precise structures by which machine elements in machine construction, special machine construction and plant construction can be joined together.

Abstract: A fastening member that exerts a high loosening-inhibition effect is provided. A fastening member 1 has an upper portion 11 on a thread top portion side and a lower portion 12 on a thread root side in at least a part of a thread 10. The upper portion 11 and the lower portion 12 have following constructions. A pressure-side flank surface 13 and a play-side flank surface 14 are formed on the upper portion 11. A pressure-side side surface 15 and a play-side side surface 16 are formed on the lower portion 12. The pressure-side side surface 15 is formed to be continuous from a lower end of the pressure-side flank surface 13.

Abstract: A system for assembling an end cover of a combustor includes a connector and structure for engaging the connector to an insert positioned at least partially inside the end cover. The system also includes structure for moving the connector axially with respect to the end cover. A method for assembling an end cover of a combustor includes inserting a connector through at least a portion of the end cover and an insert positioned at least partially inside the end cover. The method further includes engaging the connector with the insert and moving the connector axially with respect to the end cover to compress the insert against the end cover.