12.9 Grade Black Oxide UNC UNF Hex Socket Cup Point Set Screws Grub Bolts 2#-56 4#-40 6#-32 8#-32 10#-24 10#-32 1/2-13Home Improvement > Hardware1,37 USD (≈ 1,23 €)DisponibileSold by AliExpress WWVai al negozio