Holo-krome 72246 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The HOLO-KROME 72246 is a hex socket cap screw designed for high-strength fastening applications where a recessed drive is required for a clean, low-profile installation. It features a 1/2-13 UNC thread and measures 3.5 inches under the head with partial threading. The 3/8-inch hex drive is engaged with a standard hex key or Allen driver. Constructed from alloy steel with a black oxide finish, this screw delivers corrosion resistance and a consistent appearance in demanding environments. It meets ASME B18.3 and ASTM A574 standards, making it appropriate for structural and mechanical assemblies where load-bearing integrity is critical. Licensed professionals and industrial maintenance technicians rely on this fastener type for precision equipment and machinery applications.

This screw is suited for use in mechanical assemblies, structural fixtures, and industrial equipment installations where a flush or countersunk hex drive is preferred over an external head. The partial threading provides a strong clamping force and is appropriate for through-hole or threaded-insert applications in metal fabrication, equipment mounting, and general industrial maintenance. Its alloy steel construction makes it a reliable choice for applications subject to vibration, torque, and elevated stress loads.

Key Features

• 1/2-13 UNC thread size for compatibility with standard inch-series hardware
• 3.5-inch length under head with partial threading for strong clamping force
• 3/8-inch hex drive accepts standard hex keys and Allen drivers
• Alloy steel construction meets ASTM A574 for high-strength fastener requirements
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-service hex socket cap screw for industrial, mechanical, and structural assemblies requiring a 1/2-13 UNC partially threaded fastener.

Installation Notes

Installation is typically performed by millwrights, maintenance technicians, or mechanical contractors using a calibrated torque wrench and a 3/8-inch hex key bit. De-energize and lock out all equipment before servicing fastener connections on powered machinery. Inspect threads and seating surfaces for debris or damage before installation. Do not substitute a fastener of lower grade in applications originally specified for ASTM A574 high-strength cap screws.