Value Collection 721084PR Flat Socket Cap Screw 6-40x1 in

Product Description

The VALUE COLLECTION 721084PR is a flat socket cap screw designed for precision fastening applications requiring a low-profile, flush-seated head. Built from alloy steel with a black oxide finish, this screw delivers solid corrosion resistance and a matte appearance suited for functional assemblies. The 82-degree flat head seats flush with the mating surface when properly countersunk, eliminating protrusion. Driven by a 5/64-inch hex socket, it provides reliable torque transfer without external wrench flats. Thread size is 6-40 UNF, and the screw is fully threaded across its 1-inch overall length. Meets ASME/ANSI B18.3 and ASTM F835 standards. Installed by machinists, millwrights, and mechanical assemblers in a wide range of light industrial and precision equipment applications.

This screw is appropriate for applications where the fastener head must sit flush or below the work surface, such as machine frames, fixtures, tooling plates, and enclosures. The fine 6-40 UNF thread pitch offers better thread engagement and vibration resistance compared to coarse-thread equivalents, making it a common choice in precision instrument assemblies, electronics enclosures, and small mechanical devices. Minimum order quantity is 100 pieces per order.

Key Features

• 82-degree flat head countersunk profile seats flush with the mating surface
• 5/64-inch hex socket drive for use with standard hex keys or Allen drivers
• 6-40 UNF fully threaded for maximum thread engagement along the full 1-inch length
• Alloy steel construction provides high tensile strength for the fastener size
• Black oxide finish adds mild corrosion resistance and reduces light reflection
• Meets ASME/ANSI B18.3 and ASTM F835 dimensional and performance standards

Compatibility

Designed as an OEM-style replacement or standard service fastener for any application requiring a 6-40 UNF flat socket cap screw with an 82-degree countersink and hex socket drive, conforming to ASME/ANSI B18.3 specifications.

Installation Notes

Installation is typically performed by machinists or mechanical assemblers using a calibrated hex key or torque driver sized for a 5/64-inch drive. The mating hole must be properly countersunk to 82 degrees to achieve full flush seating. Do not install into an under-sized or uncountersunk hole, as this will prevent proper head seating and may damage the workpiece or fastener. Follow applicable torque specifications for 6-40 alloy steel fasteners as defined by the governing assembly standard for your application.