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) 5/16-18 x 3-1/2 Allen Button Head Socket Cap Screws Alloy Bolts Black Oxide: : Industrial & Scientific
5/16-18 x 1/2 Button Head Cap Screws w/Pellet
5/16-18 x 2-1/4 1936 Series Socket Head Cap Screw, Alloy Steel, Thermal Black Oxide - PT (Pkg of 100)
1/4-20 x 3/16 Coarse Thread Socket Set Screw Nylon Tip Alloy Steel Black Oxide
5/16-18 Socket Cap Screws, Alloy Steel Socket Head Cap screws Black Ox
5/16-18 x 1 SOCKET HEAD CAP SCREW - BLACK OXIDE ALLOY STEEL - 20 PIECES
1/4-20 Low Head Socket Cap screws - Monster Bolts
5/16 - 24 Allen Head Socket Cap Screw Black - BC Fasteners & Tools
5/16-18 x 2 1/2 (PT) Coarse Thread Socket Head Cap Screw Nylon Pellet Alloy Steel Black Oxide Pk 25
5/16-18 x 3/8 Coarse Thread Socket Set Screw Cup Point Nylon Patch Alloy Steel Black Oxide
MonsterBolts - #5-40 x 1/4 Button Head Socket Cap Screws, ASME B18.3, Alloy Steel, Black Oxide, 10 Pack: : Industrial & Scientific
5/16-18 x 3-1/2 SOCKET HEAD CAP SCREW - BLACK OXIDE ALLOY STEEL - 8 PIECES
5/16-18 x 1 (FT) Coarse Thread Socket Flat Head Cap Screw Nylon Patch Alloy Steel Black Oxide Pk 25
5/16-18 x 1 SOCKET HEAD CAP SCREW - BLACK OXIDE ALLOY STEEL - 20 PIECES
#10-24 Socket Head Cap screws. These are made from Alloy Steel with Thermal Black Oxide coating., Note: PT = Partial Thread, Diameter: #10, Thread
10-24 U.S. / Inch ”‚ Alloy Steel Socket Head Cap screws “ MonsterBolts