Value Collection 721080PR Flat Socket Cap Screw 6-40

Product Description

The VALUE COLLECTION 721080PR is a flat socket cap screw designed for low-profile fastening applications where a flush or countersunk surface finish is required. Built from alloy steel with a black oxide coating, this screw provides moderate corrosion resistance and a clean, dark appearance suited for mechanical assemblies. It features an 82-degree flat head driven by a 5/64-inch hex socket, with a 6-40 UNF thread and a fully threaded 5/8-inch overall length. Licensed tradespeople and maintenance technicians working on precision mechanical equipment, fixtures, and fabricated assemblies will find this fastener a reliable OEM-style option.

This screw is appropriate for use in light mechanical assemblies, instrument panels, and machine components where a flush-sitting fastener is preferred over a raised-head style. The 6-40 thread size is a fine-thread designation commonly found in precision equipment, electronics enclosures, and small mechanical linkages. The fully threaded shank ensures maximum thread engagement across the entire grip length, making it well suited for thin material applications.

Key Features

• 82-degree flat head profile sits flush or below surface in countersunk holes
• 5/64-inch hex socket drive for use with standard Allen or hex key sets
• 6-40 UNF fully threaded shank for maximum thread engagement
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 standards
• Black oxide finish provides mild corrosion resistance and reduces light reflection

Compatibility

Designed as an OEM-style replacement or standard fastener for precision mechanical assemblies requiring a 6-40 UNF flat socket cap screw per ASME/ANSI B18.3 and ASTM F835 specifications.

Installation Notes

Install using a calibrated 5/64-inch hex key or Allen driver to avoid stripping the socket. Ensure the mating hole is properly countersunk to an 82-degree angle before installation. Power down or de-energize any equipment before accessing internal fastener locations. Follow applicable ASME or facility maintenance codes when replacing fasteners in pressure-rated or load-bearing assemblies.