Holo-krome 72318 Hex Socket Cap Screw 3/4-10 Unc

Product Description

The HOLO-KROME 72318 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide finish, this fastener delivers reliable clamping force and corrosion resistance in demanding service environments. The 3/4-10 UNC thread and 3-1/4 inch length under head suit medium-to-heavy load connections where a recessed hex drive is preferred. The 5/8 inch hex socket drive allows precise torque application with standard hex keys or socket drivers. It is partially threaded, which improves shear strength in bolted joints.

This cap screw is suited for use in fabrication shops, machine assembly, heavy equipment maintenance, and industrial construction. The alloy steel construction makes it appropriate for ferrous and structural steel assemblies. Machinists, millwrights, and maintenance mechanics commonly install this fastener wherever a low-profile, high-strength socket head cap screw is specified. The black oxide coating provides mild corrosion protection and reduces galling during installation.

Key Features

• 3/4-10 UNC thread for broad compatibility with standard inch-series tapped holes
• 3-1/4 inch length under head accommodates medium stack heights with partial threading for improved shear resistance
• 5/8 inch hex socket drive for precise torque delivery with hex keys or socket tooling
• Alloy steel construction meets ASME B18.3 and ASTM A574 standards for high-strength fastener applications
• Black oxide finish reduces surface corrosion and light-reflective interference in close-tolerance assemblies

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw for use in any application requiring a 3/4-10 UNC partially threaded fastener with a 5/8 inch hex socket drive.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance mechanics using a calibrated torque wrench and the correct 5/8 inch hex key or socket bit. De-energize or lock out equipment before fastener removal or installation per applicable OSHA lockout/tagout procedures. Apply thread lubricant or anti-seize compound as appropriate for the service environment to achieve accurate torque values. Do not exceed the rated torque for 3/4-10 alloy steel fasteners as specified by ASME B18.3 or the equipment manufacturer.