Stacking bolts type AF in line with the STAUFF standard for the surface mounting of pipe / tube clamps and hose clamps of the Heavy Series according to DIN 3015, Part 2, in conjunction with safety locking plates type SIP. Manufactured from steel with various surface coatings (phosphated, uncoated, zinc/nickel-coated). Alternatively also available in stainless steel V2A 1.4301 / 1.4305 (AISI 304 / 303) and V4A 1.4401 / 1.4571 (AISI 316 / 316 Ti).