Value Collection 721152PR Flat Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 721152PR 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 and is manufactured from alloy steel with a black oxide finish for moderate corrosion resistance. The 1/4-20 UNC thread and 3-1/2-inch overall length make it suited to medium-depth fastening tasks. This fastener is partially threaded, which helps maintain clamping force across thicker material stacks. Machinists, millwrights, and maintenance technicians install this type of screw in machinery, fixtures, and structural assemblies where a low-profile head is required.

This screw is used in general industrial, manufacturing, and maintenance applications where the fastener head must sit flush with or below the surface of the mating material. Typical installation scenarios include machine frames, jigs, tooling plates, and mechanical assemblies that call for a countersunk hole pattern. The black oxide finish suits indoor and light-duty environments where moderate surface protection is acceptable. This screw conforms to ASME/ANSI B18.3 and ASTM F835 standards, making it appropriate for applications governed by those fastener specifications.

Key Features

• 82-degree flat head profile seats flush in standard countersunk holes
• 5/32-inch hex socket drive for precise torque application with standard Allen keys
• Alloy steel construction provides high tensile strength for mechanical fastening
• Black oxide finish adds surface protection and reduces light reflection
• Partially threaded shank maintains clamp load across thicker material joints
• Conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-use flat socket cap screw for industrial, manufacturing, and maintenance applications requiring a 1/4-20 UNC countersunk fastener in alloy steel.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 5/32-inch hex key or socket driver. De-energize and lock out any machinery before fastener installation or replacement per applicable OSHA lockout/tagout procedures. Ensure the mating hole is countersunk to the correct 82-degree angle to achieve full head seating. Do not exceed the rated torque range for a 1/4-20 alloy steel fastener as specified by the applicable engineering standard for the assembly.