Value Collection 721180PR Flat Socket Cap Screw 5/16-24

Product Description

The Value Collection 721180PR 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 3/16-inch hex socket, with a 5/16-24 UNF thread and an overall length of 3/8 inches. Constructed from alloy steel with a black oxide finish, this screw offers solid mechanical strength and moderate corrosion resistance. It is fully threaded along its entire length, making it well-suited for secure clamping in tapped holes. Machinists, tool-and-die workers, and mechanical assemblers are the typical installers of this fastener type.

This flat socket cap screw is commonly used in machine assembly, fixture building, tooling plates, and precision mechanical components where a flush surface is required. The black oxide finish reduces light reflection and provides a degree of surface protection in dry or lightly oiled environments. Its fine UNF thread pitch makes it appropriate for applications where vibration resistance or fine adjustment is a priority. Sold individually with a minimum order quantity of 100 pieces.

Key Features

• 82-degree flat head for flush or countersunk installation
• 3/16-inch hex socket drive for standard Allen key or hex bit
• 5/16-24 UNF fine thread for vibration resistance and precise adjustment
• Fully threaded along the 3/8-inch overall length
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 standards
• Black oxide finish for reduced reflectivity and light surface protection

Compatibility

Designed for use in tapped holes accepting a 5/16-24 UNF thread. Conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards, making it interchangeable with other compliant flat socket cap screws of the same thread size and length.

Installation Notes

Installation requires a 3/16-inch hex key or socket bit driver. The mating hole should be machined or drilled to an 82-degree countersink to achieve a proper flush seating surface. Ensure the tapped hole depth and thread engagement meet standard engineering minimums for the thread size before driving. Do not exceed the mechanical torque rating for the alloy steel grade in use; consult applicable engineering references for torque specifications.