DIN Standards Committee Fasteners
DIN 939
Fasteners - Studs - Metal end ≈ 1,25d
Verbindungselemente - Stiftschrauben - Einschraubende ≈ 1,25d
Overview
This document specifies requirements for sizes M4 to M52 metric coarse pitch thread and M8×1 to M52×3 fine pitch thread studs made of steel or stainless steel, with a thread length bm at the stud end of approximately 1,25d, of product grade A. This document has been prepared by Working Committee NA 067-00-02 AA "Verbindungselemente mit metrischem Außengewinde" ("Fasteners with metric external threads") at DIN Standards Committee Fasteners (FMV).