Holo-krome 72310 Hex Socket Cap Screw 3/4-10 Unc

Product Description

The HOLO-KROME 72310 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and trade assembly work. It features a 3/4-10 UNC thread, a 2-1/4 inch length under head, and a 5/8 inch hex drive socket. Constructed from alloy steel with a black oxide finish, this fastener delivers the tensile strength required for demanding structural and mechanical connections. The black oxide coating provides moderate corrosion resistance and reduces light reflection. This screw is sold individually and is appropriate for use wherever ASME B18.3 and ASTM A574 socket head cap screw standards are specified.

This fastener is suited for close-tolerance mechanical assemblies, machine frames, jigs, fixtures, and equipment enclosures. The 3/4-10 UNC coarse thread allows for faster installation and better performance in lower-strength base materials compared to fine thread equivalents. The 5/8 inch hex drive requires a standard hex key or Allen driver of matching size. Fully threaded along the shank, the 72310 is appropriate when thread engagement is needed along the full clamping length. Machinists, millwrights, and maintenance mechanics are the typical installers.

Key Features

• 3/4-10 UNC coarse thread for reliable engagement and faster installation
• 2-1/4 inch length under head, fully threaded shank
• 5/8 inch hex socket drive for use with standard Allen keys or hex drivers
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide finish provides moderate corrosion resistance and a low-reflectance surface
• Conforms to ASME B18.3 dimensional standards for socket head cap screws

Compatibility

Designed as an OEM-style and aftermarket replacement hex socket cap screw conforming to ASME B18.3 and ASTM A574, suitable for any 3/4-10 UNC tapped hole application requiring a socket head cap screw of this length and drive size.

Installation Notes

Installation is performed with a 5/8 inch hex key or T-handle Allen driver. Ensure the mating tapped hole is clean and free of debris before driving the fastener. De-energize and lock out any machinery before replacing or installing fasteners in live equipment per applicable safety procedures. Do not use impact drivers on socket cap screws without verifying the drive interface can withstand the torque application.