Holo-krome 72036 Hex Socket Cap Screw 5-40 Unc Alloy Steel

Product Description

The HOLO-KROME 72036 is a hex socket cap screw designed for precision fastening applications where a low-profile, high-strength connection is required. Built from alloy steel with a black oxide finish, this screw measures 3/4 inches in length under the head and carries a 5-40 UNC thread designation. It is fully threaded and driven with a 3/32-inch hex key. The black oxide coating provides moderate corrosion resistance and reduces light reflection, making it a common choice in mechanical assemblies, instrumentation, and industrial equipment. It meets ASME B18.3 and ASTM A574 standards, confirming its suitability for load-bearing fastener applications.

This screw is used across a wide range of trade and industrial applications including HVAC equipment panels, electrical enclosures, pump assemblies, and precision machinery where a compact hex socket drive is preferred over external-wrenching fasteners. The 5-40 UNC thread size is common in small mechanical components and instrument housings. This item is sold individually but carries a minimum order quantity of 100 units, making it appropriate for maintenance stock, production line use, or service truck inventory where consistent fastener supply is needed.

Key Features

• 5-40 UNC thread for compatibility with small-diameter tapped holes in mechanical assemblies
• Fully threaded 3/4-inch length under head provides maximum thread engagement
• Alloy steel construction meets ASTM A574 mechanical requirements for socket cap screws
• Black oxide finish offers surface protection and low-reflectance appearance
• 3/32-inch hex drive accepts standard hex keys and Allen wrench sets
• Conforms to ASME B18.3 dimensional standard for socket head cap screws

Compatibility

Designed as a standard ASME B18.3 socket head cap screw for use in any application requiring a 5-40 UNC threaded fastener with a 3/32-inch hex drive.

Installation Notes

Installation is performed with a 3/32-inch hex key or Allen wrench; ensure the driver seats fully in the socket to avoid rounding. De-energize and lock out any equipment before accessing fastened panels or assemblies per applicable OSHA lockout/tagout procedures. Do not exceed the rated tensile strength of the fastener by over-torquing in shallow or damaged tapped holes. Inspect threads for contamination or damage before installation to ensure full engagement.