Value Collection 211187PR Flat Socket Cap Screw 5/16-24

Product Description

The Value Collection 211187PR is a flat socket cap screw designed for flush or countersunk fastening applications requiring a low-profile head. It features an 82-degree flat head geometry with a 3/16-inch hex socket drive, a 5/16-24 UNF thread, and an overall length of 1.5 inches. The screw is fully threaded along its entire length and manufactured from alloy steel with a black oxide finish that provides mild corrosion resistance and a dark, non-reflective appearance. This fastener is installed by machinists, millwrights, and mechanical contractors working on assemblies where the head must sit flush or below the mating surface.

This flat socket cap screw is suited for use in precision mechanical assemblies, tooling fixtures, machine frames, and industrial equipment where a hex socket drive provides reliable torque transfer in tight clearance areas. The 5/16-24 UNF thread pitch is appropriate for applications requiring finer thread engagement than coarse-series fasteners offer. Alloy steel construction supports higher clamping loads compared to standard carbon steel fasteners of the same size.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 3/16-inch hex socket drive for use with standard Allen or hex key tools
• 5/16-24 UNF fully threaded shank for maximum thread engagement
• Alloy steel construction for high tensile strength
• Black oxide finish provides mild corrosion resistance and low light reflectivity
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-use fastener for mechanical assemblies requiring a 5/16-24 UNF flat socket cap screw with an 82-degree countersunk head profile.

Installation Notes

Install using a 3/16-inch hex key or Allen driver. Ensure the mating part is countersunk to the correct 82-degree angle before installation to achieve proper head seating and clamping force. Verify thread compatibility with the tapped hole before torquing. Follow applicable ASME or equipment manufacturer torque specifications for 5/16-24 alloy steel fasteners.