Holo-krome 60134 Flat Socket Cap Screw 1/2-13 X 2 in

Product Description

The HOLO-KROME 60134 is a flat socket cap screw used to fasten components where a flush or countersunk surface is required. It features an 82-degree flat head driven by a 5/16-inch hex socket and carries a 1/2-13 UNC thread in a 3A fit class. The fastener is fully threaded over its 2-inch overall length. Manufactured from alloy steel with a black oxide finish, it achieves a hardness of 39-44 HRC, making it suitable for high-strength mechanical assemblies. Machinists, millwrights, and maintenance technicians install this type of fastener where a conventional hex bolt head would create interference.

This flat socket cap screw is intended for use in industrial, manufacturing, and mechanical maintenance applications where flush fastening is required. The black oxide finish provides mild corrosion resistance and reduces light reflection in tooling, fixtures, jigs, and machinery enclosures. It conforms to ASME B18.3 and ASTM F835 standards, making it appropriate for engineered assemblies that specify compliance with those fastener standards. The 1/2-13 UNC thread is a common size across a wide range of general industrial equipment and machine tool applications.

Key Features

• 82-degree flat head profile for flush or countersunk installations
• 5/16-inch hex socket drive for standard Allen key or hex bit tooling
• Fully threaded 2-inch overall length for maximum thread engagement
• Alloy steel construction with 39-44 HRC hardness for high-strength applications
• Black oxide finish for mild corrosion resistance and low-glare appearance
• Meets ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 1/2-13 UNC flat socket cap screw conforming to ASME B18.3 and ASTM F835, suitable for use in tapped holes requiring an 82-degree countersunk flat head fastener in industrial and mechanical applications.

Installation Notes

Installation requires a properly countersunk hole machined to an 82-degree included angle to seat the head flush with the mating surface. Use a calibrated torque wrench with a 5/16-inch hex key bit and follow the torque specifications prescribed by the equipment manufacturer or applicable engineering standards for the thread size and material class. De-energize and lock out all equipment before performing any fastener replacement or installation per applicable OSHA lockout/tagout procedures. Inspect the tapped hole for thread damage and clean threads before installation to achieve accurate torque and proper clamp load.