Self drilling screws with tapping screws DIN 7504 K, thread according to DIN 7970 +Sealing washer stainless and EPDM Drilling capacity steel: 6,0 mm 5,5 x 32 200,000 pieces 5,5 x 38 200,000 pieces 5,5 x 40 200,000 pieces Drilling capacity steel: 12,0 mm 5,5 x 32 200,000 pieces 5,5 x 38 200,000 pieces 5,5 x 40 200,000 pieces Drilling capacity steel: 2 x 1,0 mm 4,8 x 20 50,000 pieces