Holo-krome 73002 Hex Socket Cap Screw 0-80 Unf Alloy Steel

Product Description

The HOLO-KROME 73002 is a hex socket cap screw designed for precise, high-strength fastening in tight-clearance applications. It features a 0-80 UNF thread size and a length under head of 0.125 inches, making it suited for miniature assemblies where space and thread engagement are critical. The screw is fully threaded, machined from alloy steel, and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection. This fastener is installed with a hex drive tool and is commonly used by machinists, maintenance technicians, and precision assembly professionals working on instruments, fixtures, or mechanical subassemblies.

This fastener is used in applications requiring fine-thread engagement in small-diameter holes, including precision instruments, jigs, fixtures, and light mechanical assemblies. Its 0-80 UNF thread is one of the finest standard thread pitches available in inch sizing, making it appropriate where vibration resistance and tight tolerances are required. The black oxide finish suits indoor and low-moisture environments. This screw is typically found in professional machine shops, OEM manufacturing lines, and field service kits where miniature fasteners are a routine requirement.

Key Features

• 0-80 UNF fully threaded profile for maximum thread engagement in short-length applications
• 0.125 inch length under head for use in shallow blind holes and thin-material assemblies
• Alloy steel construction meets ASTM A574 mechanical requirements for socket cap screws
• Black oxide finish provides mild corrosion resistance and a low-reflectance appearance
• Hex socket drive allows installation with standard hex keys in confined spaces
• Conforms to ASME B18.3 dimensional standards for inch hex socket cap screws

Compatibility

Designed as a standard ASME B18.3 inch hex socket cap screw for use in any application requiring a 0-80 UNF threaded fastener with a 0.125 inch length under head.

Installation Notes

Installation is performed with a correctly sized hex key or hex bit driver matched to the 0-80 socket drive to avoid rounding the socket. Power down or de-energize any equipment before accessing fastened assemblies. Apply only hand-tool torque appropriate for the 0-80 thread class to avoid stripping threads in mating components. Inspect threaded holes for cleanliness and correct thread form before installation.