square head bolt,with different sizs , materials, standards and finishes .

square head bolt

standard : JIS , DIN . AISI, GB .

material : carbon steel , stainless  steel , alloy steel .

class: class4 . class 8, class10.9,class12.9. grade2,grade5,grade8, A2-70, A4-80 A193 GR.B8, B8M

finish:plain , black oxide , blue zinc ,yellow zinc , black zinc , nickel and so on.

We are professional manufacturer and exporter for different kinds of fasteners ,pipe fittings  and metal parts . We can offer  fasteners  of many sizes and standards, GB, JB, ISO, DIN, ANSI (IFI), BS, JIS, etc.The material could be brass , aluminum , carbon steel , alloy steel , stainless steel , zinc , and so on . Our strong R&D and QC department can control the products to meet your strict requirement .No matter you have a drawing or a sample , we can give the quotation within 24hours.

Please do not hesitate to contact us at once .