BSW916,BSW1083,also manufacture non-standard products according to customers' requirements. cold heading nuts,hex nut,hex nutsDIN934 Hex NutsBSW916,BSW1083Hex NutsDIN6915 Hex Bolts with Large Widths, Flats For High-Tensile NutsGB41 Hex Nuts Style1-Product, Grade CGBB6170 Hex Nuts Style1-Product,Yades and Bcold headingISO 9001:2000Test: BV,SAI etc nuts,hex nut,for machine