1,Purpose: steel structure fastening, etc 2,Quality assurance preferential price 3,Prompt delivery, and transportation safet 1,Standard:EN ISO 15480 (DIN7504);2,Length:13mm~280mm(1/2"~11") 3,Dia.:3.5mm~6.3mm(#6~#14) 4,Points:PT.1~PT.55,Surface finish:---a) White,yellow or black zinc,---b) Black or gray phosphor,---c) DAKROMET,---d) RUSPERT,---e) Geomet,---f) Magni,---g) Black Oxide,---h) Nickel ...