US (Inch) 5/16-18 screws with an allen key drive. Socket caps have a small cylindrical head with tall vertical sides. Socket drive is a six-sided
5/16-18 x 1-1/4 Hex Cap Screw Grade 2 Non A307 Black Oxide
5/16-18 x 4 (FT) Coarse Thread Socket Button Head Cap Screw Alloy Steel Black Oxide Pk 25: : Industrial & Scientific
5/16-18 x 1-1/2 Flat Head Socket Cap Screw with Nylon Patch, Alloy Steel, Thermal Black Oxide - FT (Pkg of 100)
5/16-18 x 3-1/2 SOCKET HEAD CAP SCREW - BLACK OXIDE ALLOY STEEL - 8 PIECES
Prime-Line 5/16 in.-18 x 1-1/2 in. Black Oxide Coated Steel Hex (Allen) Drive Socket Head Cap Screws (10-Pack) 9178999 - The Home Depot
1/4-20 Low Head Socket Cap screws - Monster Bolts
7/16-14 x 1 1/2 Coarse Thread Grade 5 Hex Cap Screw (Bolt) Drilled Head Medium Carbon Steel Thermal Black Oxide
5/16-18 Stainless Steel Hex Cap Bolts 18-8 / A2
5/16-18 x 1/2 Socket Cap Screw w/Patch
5/16-18 x 2 3/4 Coarse Thread Socket Set Screw Cup Point Alloy Steel Black Oxide
Steel Nylon insert Lock Nuts with Black Phosphate coating. These are Grade C nuts (similar to SAE Grade 5 bolts). Typically Grade C nuts are used in
U.S. / Inch - Nylon Insert Hex Locknuts Grade C, Steel with Black Phosphate
5/16-18 x 1-1/4 SOCKET HEAD CAP SCREW - BLACK OXIDE ALLOY STEEL - 15 PIECES
