Increased mushroom head square neck bolt DIN 603

Standard sizes
Thread diameter (d)Screw length (L) Thread length (b) Neck height (f)Head diameter (D)Head height (K max.)Neck side dimention(V)
М6 20-180 full<100 4,6 16,55 3,88 6,48
М8 20-180 full<100 5,6 20,65 4,88 8,58

Increased mushroom key head bolt GOST 7801-81

Standard sizes
Thread diameter (d) Screw length (L) Thread length (b) Key height (w) Head diameter (D) Head height (K max.)
М6 20-180 full<100 3 14 3
М8 20-180 full<100 3,5 18 4

Hexagon-headed bolt DIN 933


Standard sizes
d S L K Thread length
6 10 20-120 4.0 full
8 13 20-150 5,3 full

Hexagon-headed bolt GOST 7805


Standard sizes
d S L K Thread length
6 10 20-120 4.0 full
8 13 20-150 5,3 full
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