DIN 6921 Bolts

DIN 6921 Bolts

DIN 6921 Bolts

DIN 6921 Bolts


  • Steel, Galvanized steel,  Stainless steel A4 / A2, Polyamide


  • Bolt DIN 6921 is used in machine building and instrument making for fastening various elements of structures and parts. There is a hexagon head, flat flange and incomplete thread. Bolt DIN 6921 is produced by the strength class 8.8 and 10.9


  • ISO 8100, 8102, EN 1665.


  • DIN 6921 Bolts are Hexagon Flange Bolts.
  • The bolt DIN 6921 is made of acid-resistant, high-strength steel and goes through special galvanizing.
  • The bolt has an interesting constructive shape: the hexagonal head smoothly passes into the flange.
  • The bolt can be made with both full and limited threads all will depend on the length and diameter of the bonded material.


  • The outer diameter of the thread of the bolt stud completely corresponds to the European standards.
  • In addition to the built-in washer, which helps the bolt to self-center, you can use additional equipment (engraving washer).
  • In addition to standard lock washers, you can use universal washers with a ribbed surface.
Bolt settings

Nominal thread diameter d

Pitch of thread, P0.811.251.51.7522
Head height K, max.DIN 69215.
EN 166510.411.813.715.4
Dw min9.812.215.819.623.827.631.9
Diameter of circumscribed circle e, not less thanDIN 69218.7110.9514.2616.4917.619.7623.12
EN 166517.6219.8623.1526.51
Turnkey size, SDIN 69218101315161821
EN 166516182124
Thread length, bL ≤ 12516182226ththirty3438
125 <L ≤ 200--2832364044
L> 200------57
Bolt length, lMin.1012162025thirty35
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