1/4"-20 x 3/4" Socket Head Cap Screws, Alloy Steel, Black Oxide, 100 Pack
1/4"-20 x 3/4" Socket Head Cap Screws, Alloy Steel, Black Oxide, 100 Pack
Socket Head Cap screws, 1/4"-20 x 3/4", Class 12.9 alloy steel with black oxide finish. The cylindrical head counterbores flush and carries full preload; drive with a 3/16" hex key or bit. Class 12.9 is the strongest standard fastener class - for machine tools, fixtures, dies and any joint torqued to spec. Precision rolled threads; pairs with standard 1/4"-20 nuts and tapped holes.
Product Features
- CYLINDRICAL SOCKET HEAD - full-strength head that counterbores flush into machined pockets; the standard machine-building fastener
- INTERNAL HEX DRIVE - torque from directly above with an allen key or hex bit; works in counterbores and recesses no wrench can reach
- KNURLED HEAD, ROLLED THREADS - precision cold-formed threads spin on smooth and torque accurately
- CLASS 12.9 / ALLOY STEEL - the strongest common fastener class (170,000+ psi); black oxide finish; for tooling, machinery and high-load joints
- SPECS (1/4"-20 x 3/4") - 3/16" hex key; Class 12.9 alloy, black oxide; DIN 912 / ASME B18.3 geometry