Value Collection 721228PR Flat Socket Cap Screw 7/16-20

Product Description

The VALUE COLLECTION 721228PR is a flat socket cap screw designed for flush or countersunk fastening applications in precision assemblies. It features an 82-degree flat head with a 1/4-inch hex socket drive, allowing torque to be applied with a standard hex key. The screw measures 7/16-20 thread size by 1-1/4 inches in overall length and is fully threaded. Manufactured from alloy steel with a black oxide finish, it delivers solid shear strength and corrosion resistance suitable for industrial, mechanical, and structural use. Machinists, maintenance technicians, and fabricators typically install this fastener.

This flat socket cap screw is suited for applications where the fastener head must sit flush with or below the mating surface. Common use cases include machine frames, jigs, fixtures, tooling plates, and mechanical assemblies where a low-profile head is required. The black oxide finish reduces light reflection and provides moderate corrosion protection in dry to mildly humid environments. The UNF thread standard and ASME/ANSI B18.3 and ASTM F835 compliance make it a recognized specification fastener for industrial and OEM applications.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 1/4-inch hex socket drive for precise torque application with a hex key
• Fully threaded 7/16-20 UNF shank for maximum thread engagement
• Alloy steel construction for high tensile and shear strength
• Black oxide finish for reduced reflectivity and moderate corrosion protection
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard UNF replacement or OEM-spec fastener for countersunk socket cap applications requiring a 7/16-20 thread and 82-degree flat head seating angle.

Installation Notes

Installation is performed with a 1/4-inch hex key or socket driver. Ensure the mating material is drilled and countersunk to the correct 82-degree angle before installation. Follow ASME torque guidelines for alloy steel fasteners of this thread size and do not exceed the rated torque to avoid galling or thread damage. Inspect the countersink bore and thread engagement before final torque.