Value Collection 721210PR Flat Socket Cap Screw 3/8-16 X 6 in

Product Description

The VALUE COLLECTION 721210PR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Manufactured from alloy steel with a black oxide finish, this screw provides moderate corrosion resistance and reduced light reflection in service environments. It features a 7/32-inch hex socket drive and a 3/8-16 UNC thread form on a 6-inch overall length with partial threading. The flat head seats flush with or below the mating surface, making it well suited for assemblies where protrusion must be minimized. Machinists, millwrights, and maintenance technicians working with metal fabrication or mechanical assemblies are the typical installers.

This fastener is used in industrial, commercial, and general mechanical assembly applications where a countersunk socket-drive screw is specified. The 3/8-16 UNC thread is a common inch-series coarse thread, compatible with standard tapped holes and threaded inserts of the same specification. The partial threading allows the unthreaded shank to act as a shoulder section in through-hole assemblies. Black oxide finish is appropriate for interior or low-moisture environments where mild surface protection is acceptable.

Key Features

• Flat head profile seats flush or below surface for low-clearance and countersunk installations
• Alloy steel construction provides high tensile strength for demanding mechanical assemblies
• Black oxide finish offers mild corrosion resistance and reduced surface reflectivity
• 7/32-inch hex socket drive for standard Allen key or hex bit installation
• Partial threading allows unthreaded shank engagement in through-hole applications
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in standard 3/8-16 UNC tapped holes and threaded inserts conforming to inch-series coarse thread specifications in metal fabrication, machinery, and general industrial assembly.

Installation Notes

Installation requires a 7/32-inch hex key or hex socket bit torqued to the appropriate value for the assembly per engineering specification. The mating countersunk hole should be machined to the correct flat-head angle before installation. Power down or de-energize any equipment before fastener replacement on live machinery. Follow applicable ASME or facility maintenance standards for torque and inspection procedures.