Value Collection -36811-1 Flat Socket Cap Screw 1/4-20 3/8in

Product Description

The VALUE COLLECTION -36811-1 is a flat socket cap screw designed for applications where a flush or countersunk fastener is required. Sized at 1/4-20 UNC thread with a 3/8-inch overall length, this screw features an 82-degree flat head profile and a 5/32-inch hex socket drive. It is fully threaded from tip to head, making it suitable for through-hole and blind-hole fastening in metal assemblies. Constructed from alloy steel with a black oxide finish, it offers a balance of tensile strength and corrosion resistance suitable for general industrial and mechanical applications. This package contains 25 screws.

This flat socket cap screw is used in precision mechanical assemblies, machine components, tooling fixtures, and equipment panels where a low-profile flush-mount fastener is needed. The black oxide finish reduces light reflection and provides moderate surface protection. Typical installers include machinists, millwrights, and maintenance technicians working on industrial machinery, jigs, dies, and structural subassemblies. The 1/4-20 UNC thread is one of the most common inch-series thread sizes in North American manufacturing environments.

Key Features

• 82-degree flat head profile for flush or countersunk installation
• 5/32-inch hex socket drive for precise torque application with a hex key or Allen driver
• Fully threaded 3/8-inch length maximizes thread engagement in thin material
• Alloy steel construction provides high tensile strength for mechanical fastening
• Black oxide finish offers moderate corrosion resistance and low-glare appearance
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or general-use flat socket cap screw for any application requiring a 1/4-20 UNC, 3/8-inch overall length, 82-degree flat head, fully threaded inch-series fastener conforming to ASME/ANSI B18.3 and ASTM F835.

Installation Notes

Installation requires a 5/32-inch hex key or Allen driver. Ensure the mating hole is properly countersunk to 82 degrees to achieve full head seating and a flush surface. Verify thread engagement depth before final torque to avoid stripping in thin or soft base materials. Always de-energize and lock out any equipment before performing fastener replacement or maintenance work on machinery.