DIN916 Hex socket set screw 1)TREATMENT: BLACK TREATMENT 2)PACKING TERM: 25KG CARTON,BULK 3)SIZE: FROM M3-M20 We can supply all sizes of screws,bolts,nuts with standard of GB,ANSI,DIN,JIS.DIN916 Hex socket set screw1)TREATMENT: BLACK TREATMENT2)PACKING TERM: 25KG CARTON,BULK3)SIZE: FROM M3-M20 DIN916 Hex socket set screw