lock bolts 1.Size:M4-M30 2.Material:Carbon Steel,Stainless steel 3.Finish:Plain,Zinc plated 4.OEM Service LOCK BOLTS1) Differents size: M4-M30 2) Standard:GB,DIN,ANSI,JIS3) Finish:plain,black, yellow zinc, white zinc, white blue zinc, and phosphating4) Grade:4.8 5.8 6.8 8.8 10.9 12.95) Material:carbon steel, brass,stainless steel, spring steel, alloy steel6) Packing:Paper carton7) Mainly used for ...