Bolt types: Hex Flange Bolt

Standard:DIN6921,ISO1665,IS015072,JIS B 1189,IFI538,GB5789,Q183,Q184,Q186,QC/T340,ISO4162,ASME B 18.2.3.9M....etc.

Material: Carbon steel /SS304/SS316/Brass

Surface treatment: Plain ,Black oxygenation, HDG ,ZP

Class:4.8~12.9

Size:M4-M100,1/2"-21/2"