... )Size: M4-M20 3) Material: low/medium carbon steel, Name: Cap nuts (DIN1587,JIS1183,GB923)Size: M4-M20 Material: Low Carbon ... Steel,Middle Carbon Steel Quality: Multi-station Cold Forging,Screw Thread 6H,Smooth Faced without Burrs Surface:Blue-White Zinc ... nuts(DIN985,DIN982) IFI Nylon lock nuts(IFI 100) Domed Cap nuts(DIN1587, JIS1183, GB923) Weld nuts(DIN928, DIN929, JIS1196) Flange ...