Brass Bolts 1)Size:M1.2-M64,0#-3'' 2)Material:brass, copper, bronze 3)Standard:GB,DIN,BS,ISO,ANSI(IFI) Brass Boltsstandard :GB ... ,DIN,BS,ASTM,ISO,ANSI(IFI),JIS, and per specially designsize:M3-M64 ,1/8-3''length:5mm-250mm,1/4 ... ''--10''material: brass, copper, bronze, aluminium bronze, nickel bronze ...