M45x155 21CrMoV5-7 AD-W7 hexagonal head, part thread, DIN 931
Firma Killich s.r.o. offers hexagon head bolts with partial metric thread according to DIN 931. The DIN 931 bolt range includes both stainless steel A2, A4 and steel and galvanized (yellow, white) bolts in strength 4.8, 8.8, 10.9, 12.9. Hexagon bolts (DIN 931) are on hexagonal wrench.
