Metal screws TFHC A4 12-20 - OEM

A4 stainless steel A4 steels, alloyed with molybdenum, are "acid resistant" and provide better corrosion resistance. A4 is used extensively in the cellulose industry, since this grade of steel was developed for boiling sulphuric acid. It is also suitable to some extent for chloride environments. A4 is also frequently used in the food and shipbuilding industries. ISO / DIN standards This product complies with ISO 10642 standards (similar to DIN 7991). These standards ensure professional quality and simplify the identification of similar products. Below is the table of technical dimensions (depending on size): d M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 dk (min) 5,54 7,53 9,43 11,34 15,24 19,22 23,12 26,52 29,01 36,05 dk (max) 6,72 8,96 11,20 13,44 17,92 22,40 26,88 30,80 33,60 40,32 k 1,86 2,48 3,1 3,72 4,96 6,2 7,44 8,4 8,8 10,16 t (min) 1,1 1,5 1,9 2,2 3 3,6 4,3 4,5 4,8 5,6 e 2,3 2,87 3,44 4,58 5,72 6,86 9,15 11,43 11,43 13,72 s 2 2,5 3 4 5 6 8 10 10 12 Step 0,5 0,7 0,8 1 1,25 1,5 1,75 2 2 2,5 α 90-92 90-92 90-92 90-92 90-92 90-92 90-92 90-92 90-92 90-92 Length (L) depends on your choice in the product specifications before adding to basket. Subscribe to our newsletter : Subscribe I accept the terms and conditions and the privacy policy