Abstract: A test head for making contact with test points of an electric component under test and with contact points on a board, for example. A plurality of spring elastic, elongated electric contact elements have opposite ends which respectively contact a test point at one end and a contact point at the other end. A plurality of at least two and preferably three guide panels are located in the space between the test points and the contact points. A respective, first, second and third opening in the first, second and third panels for each of the contact elements for each of the contact elements, with two adjacent openings for each of the contact elements being laterally offset and misaligned so that the contact element passing through them is held in a friction locked fashion.

Abstract: A test head for making contact with test points arranged close to one another of an electric component. The test head having a plurality of contact elements which can be connected to a connecting element of a test device. The contact elements are in respective feed-through openings through two or three overlying guide panels. The contact elements are axially guidable in the feed-through openings in the panel. Various ways of securing the contact elements against falling out of the test head are provided, including friction locking of the contact elements in one panel, using a securing layer at one panel, laterally offsetting one panel with respect to the others, or by different diameters along the length of the contact element, e.g. by insulation selectively applied along the length. The connecting element and the device for making contact are detachably connected.

Abstract: The spring contact pin contacts electrical or electronic items or devices to be tested for testing purposes. It comprises a sleeve, at least one contact bolt slidable in it and at least two springs which spring load the contact bolt. At least one inner spring is located inside the sleeve guiding the contact bolt slidably. An outer coil spring is positioned on a portion of the shank of the contact bolt extending beyond the sleeve exteriorly so that the spring contact pin can be shortened and the spring travel can be reduced for a given fixed spring force and because of that cost savings may be attained.

Abstract: A resilient contact pin for contacting electrical or electronic items to be tested, such as conductor plates, printed circuit boards or the like, the resilient contact pin being electrically conductive and intended for mounting on a testing arrangement, includes a straight cylindrical member including a metallic tube constituted by a punched and bent sheetmetal part. A contact member includes a piston accommodated in the metallic tube for axial sliding and a frontward end portion projecting out of the metallic tube and serving for contacting the item to be tested. A spring is accommodated in the metallic tube and urged the contact member in a frontward direction relative to the metallic tube. There is further provided at least one lug constituted by an integral region of a circumferential wall of the metallic tube and extending into the interior of the metallic tube to constitute an abutment which limits the extent of the frontward movement of the piston of the contact member.

Abstract: A resilient contact pin for contacting electrical or electronic items to be tested, such as conductor plates, printed circuit boards or the like, the resilient contact pin being electrically conductive and intended for mounting on a testing arrangement, includes a straight cylindrical member including a metallic tube constituted by a punched and bent sheet metal part. A contact member includes a piston accommodated in the metallic tube for axial sliding and a frontward end portion projecting out of the metallic tube and serving for contacting the item to be tested. A spring is accommodated in the metallic tube and urges the contact member in a frontward direction relative to the metallic tube. There is further provided at least one lug constituted by an integral region of a circumferential wall of the metallic tube and extending into the interior of the metallic tube to constitute an abutment which limits the extent of the frontward movement of the piston of the contact member.