Metal Screw 1.HS code:7318159090 2.Standard DIN7504K/P/N 3. ... bolts, hex flange bolts, carriage bolts, stud bolts, eye bolts, U bolts, masonry bolts, roofing bolts.Nuts: spring nuts, T nuts, K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange nuts, wing nuts, weld nuts, square nuts ... TransportationThe Best Choice for You Type A/B sheet metal screw