Hexagon Head bolts Hexagon Head screws Standard: DIN931 DIN601 ISO4014 IFI A-6 IFI A-10 IFI E-34 AS1111 JIS1180 Class: 4.8/5.8/6.8/8.8/10.9/12.9 Gr.2/Gr.5/Gr.8/Gr.10 Material: Steel/Stainless Steel/Brass/Carbon steel Diameter: M4-M64 1/4"-2.1/2" Length: 6MM-600MM ACC.TO DIA