Holo-krome 72222 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The HOLO-KROME 72222 is a hex socket cap screw designed for high-strength fastening in mechanical, structural, and industrial applications. It features a 1/2-13 UNC thread form and a 3/4-inch length under head, with full threading along the shank. The drive is a 3/8-inch internal hex socket, suited for torque application with an Allen or hex key. Manufactured from alloy steel with a black oxide finish, this fastener delivers strong clamping force with corrosion resistance suitable for indoor and protected environments. It meets ASME B18.3 and ASTM A574 standards, confirming dimensional accuracy and mechanical performance. Licensed tradespeople and maintenance technicians working in equipment assembly, HVAC structural mounting, or machinery repair will find this screw appropriate for demanding fastening tasks.

This fastener is used in applications requiring a flush or recessed head profile, such as machine frames, brackets, motor mounts, and equipment enclosures. The fully threaded shank maximizes thread engagement in through-hole or tapped-hole installations. The black oxide coating reduces light reflection and provides mild surface protection, making it a practical choice for industrial environments. The 1/2-13 UNC thread is a standard coarse-thread size widely used across mechanical and HVAC equipment fabrication.

Key Features

• 1/2-13 UNC coarse thread for broad compatibility with standard tapped holes
• 3/4-inch length under head with full threading along the entire shank
• 3/8-inch hex socket drive for precise torque application
• Alloy steel construction meets ASTM A574 mechanical strength requirements
• Black oxide finish provides mild corrosion resistance and reduced glare
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw for use in any application requiring a 1/2-13 UNC fully threaded fastener with a 3/8-inch hex drive and 3/4-inch length under head.

Installation Notes

Installation requires a 3/8-inch hex key or Allen driver. Always ensure the mating tapped hole is clean and free of debris before driving the fastener. Follow applicable torque specifications for 1/2-13 alloy steel fasteners as defined by your project engineering requirements or applicable standards. Power down and de-energize any equipment before fastener work on live assemblies.