Holo-krome 72162 Hex Socket Cap Screw 3/8-16 Unc Alloy Steel

Product Description

The HOLO-KROME 72162 is a hex socket cap screw designed for high-strength fastening applications in mechanical, industrial, and trade service work. It features a 3/8-16 UNC thread with a 1-1/2 inch length under head and is fully threaded throughout. The 5/16 inch hex drive socket accepts a standard Allen key or hex bit driver. Manufactured from alloy steel with a black oxide finish, this fastener delivers corrosion resistance and a clean, low-profile appearance in tight clearance assemblies. It conforms to ASME B18.3 and ASTM A574 standards, confirming its suitability for structural and mechanical fastening where torque and tensile demands are elevated.

This screw is suited for mechanical assemblies, machine frames, equipment mounting, and general industrial fastening where a recessed drive is required. The 3/8-16 UNC thread pitch is a widely used coarse thread series found in steel, cast iron, and aluminum components across HVAC equipment, pump assemblies, and electrical enclosure hardware. Licensed trades including HVAC technicians, millwrights, and maintenance mechanics routinely use socket cap screws of this profile when working in confined spaces that prohibit access by open-end or ratchet wrenches.

Key Features

• 3/8-16 UNC coarse thread for broad compatibility with standard tapped holes in steel and cast assemblies
• Fully threaded 1-1/2 inch length under head maximizes thread engagement in thinner stock
• 5/16 inch hex socket drive allows torque application in recessed or tight-clearance locations
• Alloy steel construction provides high tensile and yield strength per ASTM A574
• Black oxide finish reduces surface corrosion and minimizes light reflection in finished assemblies
• Conforms to ASME B18.3 dimensional standards for interchangeability across tooling and hardware

Compatibility

Designed as an OEM-style replacement or standard-stock hex socket cap screw for mechanical and industrial assemblies requiring a 3/8-16 UNC fully threaded fastener with a 5/16 inch hex drive.

Installation Notes

Installation is performed with a 5/16 inch hex key or Allen driver; use a calibrated torque wrench when fastening into structural or load-bearing assemblies per applicable mechanical codes. De-energize and lock out any equipment before replacing or tightening fasteners on energized machinery. Inspect tapped holes for damage or contamination before installation. Do not use an impact driver at full power on socket cap screws without a torque-limiting mechanism, as thread stripping in aluminum or softer base materials is likely.