Holo-krome 73152 Hex Socket Cap Screw 5/8-18 Unf Alloy Steel

Product Description

The HOLO-KROME 73152 is a hex socket cap screw designed for high-strength fastening applications where a recessed drive is required. Manufactured from alloy steel with a black oxide finish, this fastener delivers corrosion resistance and reduced light reflection in service environments. It carries a 5/8-18 UNF thread size with a 1-3/4 inch length under head and is fully threaded from the bearing surface to the tip. The 1/2 inch hex drive requires a standard hex key or allen wrench for installation and removal. It meets ASME B18.3 dimensional standards and ASTM A574 mechanical property requirements, making it appropriate for structural and mechanical assembly work.

This screw is suited for use in mechanical assemblies, fixtures, and equipment where a flush or low-profile fastener head is required. The fully threaded configuration maximizes thread engagement across the clamped material stack. Typical applications include machine frames, jigs, brackets, and industrial equipment assemblies. Electricians, millwrights, pipefitters, and mechanical contractors frequently use hex socket cap screws of this specification when assembling support structures, conduit hangers, and equipment mounts to code-compliant torque specifications.

Key Features

• 5/8-18 UNF thread form for fine-thread applications requiring precise clamping force
• Fully threaded body maximizes thread engagement in thin or shallow material
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish provides moderate corrosion resistance and low-reflectivity surface
• 1/2 inch hex drive compatible with standard hex keys and socket drivers
• Conforms to ASME B18.3 dimensional standards for drop-in replacement use

Compatibility

Designed as an OEM-style replacement or direct-use fastener for applications requiring ASME B18.3 hex socket cap screws in 5/8-18 UNF with a 1-3/4 inch length under head.

Installation Notes

Install using a calibrated hex key or socket driver sized to the 1/2 inch drive recess. Verify thread engagement depth and mating thread condition before final torque. Follow applicable fastener torque specifications per ASME or equipment manufacturer guidelines for the 5/8-18 UNF thread class. Inspect the black oxide finish for damage before installation in corrosive or high-moisture environments where additional coating or lubricant may be required.