5/16" 3/8" 1/2" UNC CAP SCREWS ALLEN KEY SOCKET HEAD BOLTS A2 STAINLESS STEEL
UNC Socket Cap Screws A2 Stainless Steel. UNC socket cap screws. Manufactured from A2 grade stainless steel for improved corrosion resistance. Threads are Unified National Coarse (UNC). 5/16UNC - 18tpi, allen key size 1/4".