Bolts with hexagon head type AS according to DIN 931 (with shaft) and/or 933 (thread up to the head) or ANSI / ASME B18.2.1. Designed with M10 to M30 (3/8"-1 1/4")threads in the lengths required for the fixing of pipe / tube clamps and hose clamps of the Heavy Series according to DIN 3015, Part 2. Manufactured from uncoated steel. Optionally with STAUFF zinc/nickel surface coating for reliable corrosion protection. Alternatively also available in stainless steel V2A 1.4301 / 1.4305 (AISI 304 / 303) and V4A 1.4401 / 1.4571 (AISI 316 / 316 Ti).