GN 912.2 Retained screws

Features and applications

Stainless Steel-Captive socket cap screws GN 912.2 can be used to prevent loss of the thumb screw, due to the d₃ recessed portion of the stud. Thus the „captivity of the fixing element“ according to the Mechanical Engineering Directive 2006 / 42 / EG is given.

When using, instead of a typical tapped and bore hole, it is necessary to provide tapped bores with a thread d₁ on each of the two elements to be assembled. Additionally, a clearance bore of d₄ on one or both sides must be cut. Depending on the design and required clamping length a₁ ... a₃ of the component being attached, there are a number of assembly options as shown above.