1.DIN912 2.ZP 3. socket head cap 4.hex bolt 5.FT Type: Hex Socket Bolt Material : 35k,40Cr Standard : DIN912,ANSI,BS,AS,etc Size:M5 to M20 or 1/4" to 3/4" Grade : Metric size from Grade4.8 to Grade 12.9, Inch size from Grade2 to Grade10 Finish : plain, black, zinc plated, H.D.G,etc. Length range: Length can be from10 to 500 DIN912 Hex Socket Head Cap bolt DIN912 Hex Socket Head Cap bolt