DIN 912 Hex Socket Screw cylindrical, acid-resistant A4-80. Hex screw CH A4 stainless steel (Fortification / Screws with inner hexagon / Cylindrical head socket screws CH). Principal data: thread diameter M4, length 12 mm, indicative package size 1000 pcs, nominal thread length 20 mm. Supplied under manufacturer part number 80912040126, EAN 5711160872370, HS code 7318.15, country of origin Germany.