Size:M3-M64 ,1/8-3' Standard:GB,DIN,ISO finish code: ZIPL, NIPL Material:carbon steel.SS standard:GB,DIN,BS,ASTM,ISO,ANSI(IFI),JIS, and non-standard parts size:M3-M64 ,1/8-3''length:5mm-250mm,1/4''--10''material: brass,copper,bronze, silicon bronze, aluminium bronze, nickel bronze, phosphor bronze, manganese bronze,etc.finish code: Zine-Plated, Ni-Plated, Tin-Plated, gold plated, silvering, ...