Value Collection 36813 Flat Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 36813 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Featuring an 82-degree flat head and a 5/32-inch hex socket drive, it accepts a standard hex key for installation. The 1/4-20 UNC thread runs fully along the 5/8-inch overall length, providing positive thread engagement across the full grip. Constructed from alloy steel with a black oxide finish, this screw offers solid mechanical strength and modest corrosion resistance in indoor and light-duty service environments. It is a standard Inch-series fastener used widely across industrial, mechanical, and maintenance applications.

This screw is suited for assemblies where the fastener head must sit flush with or below the mating surface. Common install scenarios include machine frames, jigs, fixtures, panels, and equipment enclosures where a protruding head would interfere with mating components or clearance requirements. The 1/4-20 UNC thread is one of the most common Inch-series thread standards, making this screw a frequent replacement or build fastener across a broad range of mechanical and fabrication work. Minimum order quantity is 25 pieces.

Key Features

• 82-degree flat head seats flush in standard countersunk holes per ASME/ANSI B18.3
• 5/32-inch hex socket drive accepts standard hex key or Allen driver
• Fully threaded 5/8-inch overall length for maximum thread engagement
• Alloy steel construction meets ASTM F835 mechanical requirements
• Black oxide finish provides light corrosion resistance and low-glare appearance
• 1/4-20 UNC thread standard for broad tool and hardware compatibility

Compatibility

Designed as an Inch-series flat socket cap screw compatible with any countersunk hole prepared to accept a 1/4-20 UNC fastener with an 82-degree flat head per ASME/ANSI B18.3.

Installation Notes

Installation is performed with a 5/32-inch hex key or Allen-drive bit. Ensure the mating hole is countersunk to 82 degrees before driving the fastener. Apply appropriate thread torque for 1/4-20 alloy steel fasteners per the assembly specification. Black oxide finish offers limited corrosion resistance and is not recommended as the sole protection in wet or outdoor environments without additional coating.