Value Collection 721100PR Flat Socket Cap Screw 8-36

Product Description

The VALUE COLLECTION 721100PR is a flat socket cap screw designed for precision fastening applications where a flush or countersunk installation is required. Built from alloy steel with a black oxide finish, this screw features a 3/32-inch hex socket drive and is fully threaded along its 1/2-inch overall length. The 8-36 thread designation follows UNF (Unified Fine) standards, making it well-suited for applications that demand tighter thread engagement and resistance to loosening under vibration. It conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards. This screw is typically installed by machinists, millwrights, and maintenance technicians working with precision equipment or assemblies.

The 721100PR is used in applications where a low-profile or flush fastener surface is critical. The flat head geometry allows the fastener to sit flush with or below the mating surface when installed in a properly countersunk hole. Common use cases include machine guards, fixtures, tooling plates, enclosures, and mechanical assemblies where projecting fastener heads are not acceptable. The black oxide finish provides mild corrosion resistance and reduces light reflection, making it practical for indoor mechanical and industrial environments. Minimum order quantity is 100 pieces.

Key Features

• Flat head design seats flush in countersunk holes for low-profile installation
• 3/32-inch hex socket drive for internal wrench engagement
• Fully threaded 1/2-inch overall length for maximum thread engagement
• Alloy steel construction meets ASTM F835 and ASME/ANSI B18.3 standards
• Black oxide finish provides mild corrosion resistance and reduced reflectivity
• UNF thread form offers finer thread pitch for vibration-resistant fastening

Compatibility

Designed as an OEM-style or replacement fastener for any application requiring an 8-36 UNF fully threaded flat socket cap screw conforming to ASME/ANSI B18.3 and ASTM F835 standards.

Installation Notes

Installation requires a properly countersunk mating hole to achieve a flush seating surface. Use a calibrated 3/32-inch hex key or socket driver to avoid stripping the drive recess. Follow applicable torque guidelines for alloy steel 8-36 fasteners per engineering documentation or applicable standards. Inspect the mating threads for damage or contamination before installation to ensure proper thread engagement.