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DIN 6929

2013 Edition, August 1, 2013

Complete Document

Screws with coarse thread and reduced shank for captive applications

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Product Details:

  • Revision: 2013 Edition, August 1, 2013
  • Published Date: August 2013
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Deutsches Institut fur Normung E.V. (DIN)
  • Page Count: 8
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This standard specifies requirements for M3 to M30 bolts and screws (“bolts”, for short) with various head styles and a diameter of the unthreaded portion of the shank smaller than the minor diameter. It covers bolts with two types of shank designs: short (K) and long (L).

These bolts can be designed as captive fasteners, e.g. by using a snap ring, where required, as a safeguard to prevent the screw from working loose (see Annex A).

Although such bolts have a reduced shank, they are not considered waisted shank bolts or expansion bolts.

The application of this standard is also permissible analogously for non-standardized products. Due to the shank diameter, the minimum ultimate tensile loads according to DIN EN ISO 898-1, DIN EN ISO 3506-1 and DIN EN 28839 are not reached.