Holo-krome 720002530 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The HOLO-KROME 720002530 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and trade assembly work. It features a 1/2-13 UNC thread size with a 5.25-inch length under head and is partially threaded along the shank. The 3/8-inch hex drive socket interface accepts a standard hex key or Allen driver. Constructed from alloy steel with a black oxide finish, this screw offers good mechanical strength and moderate corrosion resistance in controlled environments. It conforms to ASME B18.3 and ASTM A574 standards, making it a recognized choice for structural and mechanical fastening where torque and load requirements are a factor.

This screw is suited for use in mechanical assemblies, machinery frames, equipment mounting, and structural connections where a recessed hex drive is required for flush or countersunk installation. The partial threading keeps the unthreaded shank section available for shear-load applications or close-tolerance through-bolt installations. Fabricators, millwrights, pipefitters, and maintenance mechanics commonly work with fasteners of this specification in both shop and field settings.

Key Features

• 1/2-13 UNC thread size for standard coarse-thread engagement
• 5.25-inch length under head with partial threading for shear and close-tolerance applications
• 3/8-inch hex socket drive for positive, cam-out-resistant torque transfer
• Alloy steel construction meeting ASTM A574 mechanical requirements
• Black oxide coating provides mild corrosion resistance and reduced light reflection
• Conforms to ASME B18.3 dimensional standard for hex socket cap screws

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw suitable for applications requiring 1/2-13 UNC coarse-thread fasteners in alloy steel with a 3/8-inch hex drive.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using a properly sized 3/8-inch hex key or socket driver. Ensure the mating threaded hole is clean and free of debris before installation, and verify thread engagement depth meets the fastener manufacturer and application design requirements. De-energize, depressurize, or otherwise lock out any equipment before replacing or installing structural fasteners. Do not exceed the torque specifications defined by the equipment OEM or applicable engineering documentation for this thread size and grade.