Value Collection 721151PR Flat Socket Cap Screw 1/4-28

Product Description

The Value Collection 721151PR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head driven by a 5/32-inch hex socket. The 1/4-28 UNF thread is fully threaded along its 7/8-inch overall length, making it suitable for precise, fine-thread clamping in metal assemblies. Constructed from alloy steel with a black oxide finish, this screw provides moderate corrosion resistance and a low-reflectance appearance. It conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards. Licensed trades and maintenance technicians working on machinery, enclosures, and structural assemblies are the typical installers.

This screw is well suited for machine assembly, equipment panels, jigs, fixtures, and precision mechanical components where the head must sit flush with or below the mating surface. The fine 1/4-28 UNF thread pitch provides strong thread engagement in thin or tapped metal sections. Black oxide finish makes it a common choice in applications where a non-reflective surface or basic cosmetic consistency with surrounding hardware is needed. Sold individually, with a minimum order quantity of 100 units per order.

Key Features

• 82-degree flat head profile for flush or countersunk installation
• 5/32-inch hex socket drive for standard Allen key or hex bit driver
• 1/4-28 UNF fine thread for strong engagement in tapped metal
• Fully threaded along entire 7/8-inch length
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 standards
• Black oxide finish for low reflectance and moderate corrosion resistance

Compatibility

Designed for use in any application requiring a countersunk 1/4-28 UNF flat socket cap screw per ASME/ANSI B18.3 and ASTM F835 specifications. Suitable for tapped holes in steel, aluminum, and other metals where a flush head seating surface is present.

Installation Notes

Installation requires a 5/32-inch hex key or matching hex socket bit. Ensure the mating surface is countersunk to an 82-degree angle before driving the screw. Do not exceed the rated torque capacity of the fastener for the alloy steel material grade. Follow applicable mechanical assembly codes and equipment manufacturer torque guidelines when specifying fastener preload.