Holo-krome 72185 Hex Socket Cap Screw 3/8-16 Unc 6 in

Product Description

The HOLO-KROME 72185 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and trade service environments. It features a 3/8-16 UNC thread and measures 6 inches in length under the head with partial threading. The 5/16-inch hex drive socket accepts a standard hex key or Allen wrench. Constructed from alloy steel with a black oxide finish, this fastener delivers corrosion resistance and reduced light reflection. It conforms to ASME B18.3 and ASTM A574 standards, making it a code-compliant choice for structural and mechanical assemblies where torque retention and material strength are critical.

This screw is suited for use in machinery, equipment frames, jigs, fixtures, and mechanical assemblies across HVAC, plumbing, electrical, and general industrial applications. Its partially threaded shank provides a clamp zone that resists loosening under vibration and load cycling. The black oxide coating offers mild corrosion protection in dry or lightly oiled environments, making it a practical choice for indoor mechanical service and equipment maintenance tasks performed by maintenance technicians and trade professionals.

Key Features

• 3/8-16 UNC thread for broad compatibility with standard inch-series tapped holes
• 6-inch length under head with partial threading for strong clamping grip
• 5/16-inch hex socket drive compatible with standard hex keys and T-handles
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide finish provides mild corrosion resistance and low-reflectance surface
• Conforms to ASME B18.3 socket cap screw dimensional standards

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies using 3/8-16 UNC inch-series threaded holes requiring a hex socket cap screw per ASME B18.3.

Installation Notes

Installation is typically performed by maintenance technicians or mechanical trades using a calibrated hex key or T-handle driver sized to 5/16 inch. De-energize or lock out equipment before accessing fastened assemblies per applicable OSHA lockout/tagout procedures. Do not substitute a mismatched drive size, as rounding the socket can damage the fastener head. Apply a thread lubricant or anti-seize only if specified by the equipment manufacturer for the application.