Holo-krome 64076 Button Socket Cap Screw 1/2-13

Product Description

The HOLO-KROME 64076 is a 1/2-13 button socket cap screw designed for applications requiring a low-profile fastener with high clamping strength. Made from alloy steel with a black oxide finish, this screw measures 1 inch in length under the head and is fully threaded to UNRC standards. The hex socket drive accepts a 5/16 inch hex key, making installation straightforward in confined spaces where a wrench cannot be used. At 38 HRC hardness, the fastener meets ANSI/ASME B18.3 and ASTM F835 standards, making it suitable for structural and mechanical assemblies where consistent torque and thread engagement are critical.

This button socket cap screw is used in general mechanical assembly, fabrication, and maintenance work across industrial, commercial, and construction trades. The low-profile button head sits flush and reduces snagging on moving parts or adjacent surfaces. The 3A thread fit class provides a close tolerance fit suitable for precision assemblies. Typical applications include machine guards, panels, brackets, and enclosures where a standard hex head would protrude too far. This fastener is sold in a minimum order quantity of 25 pieces.

Key Features

• 1/2-13 UNC fully threaded, 3A thread fit class for close tolerance engagement
• Alloy steel construction with 38 HRC hardness for high-strength fastening
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Low-profile button head with 0.875 inch head diameter and 0.265 inch head height
• 5/16 inch hex socket drive for use with standard hex keys in tight spaces
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 1/2-13 UNC button socket cap screw conforming to ANSI/ASME B18.3, compatible with any tapped hole or threaded insert accepting a 1/2-13 UNC thread at 3A fit class.

Installation Notes

Installation is performed with a 5/16 inch hex key or socket drive tool. Power down or de-energize any equipment before fastening into electrical enclosures or live mechanical assemblies. Follow ANSI/ASME B18.3 torque guidelines for 1/2-13 alloy steel fasteners as specified in the applicable engineering standard. Inspect threads in the mating part before installation to ensure proper fit and avoid cross-threading.