Holo-krome 73086 Hex Socket Cap Screw 5/16-24 Unf Alloy Steel

Product Description

The HOLO-KROME 73086 is a hex socket cap screw built for demanding fastening applications where strength and precision fit are required. Sized at 5/16-24 UNF with a 1-1/4 inch length under head, this fastener is fully threaded and driven by a 1/4 inch hex key. It is manufactured from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection in service environments. It meets ASME B18.3 and ASTM A574 standards. Maintenance technicians, millwrights, and mechanical contractors install this type of fastener across a wide range of industrial and mechanical assemblies.

This screw is suited for use in mechanical assemblies, equipment manufacturing, and general industrial maintenance where a fine-thread socket cap screw is specified. The 5/16-24 UNF thread pitch provides tighter thread engagement than coarse-thread equivalents, making it appropriate for applications requiring controlled preload or use in thinner materials. The black oxide finish is commonly specified in applications where a low-profile, non-reflective fastener surface is preferred.

Key Features

• 5/16-24 UNF fine thread for increased thread engagement and preload control
• 1-1/4 inch length under head with full threading along the entire shank
• 1/4 inch internal hex drive for use with standard hex keys or socket drivers
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion resistance and a non-reflective surface
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw for use in any application specifying a 5/16-24 UNF fully threaded socket cap screw in alloy steel with black oxide finish.

Installation Notes

Installation requires a 1/4 inch hex key or Allen-type socket driver. Power down or de-energize any equipment before fastener service or replacement. Torque to the value specified by the equipment manufacturer or applicable engineering drawing. Inspect thread engagement and seating surface condition before final assembly.