Holo-krome 73094 Hex Socket Cap Screw 5/16-24 Unf

Product Description

The HOLO-KROME 73094 is a hex socket cap screw designed for high-strength fastening in mechanical, industrial, and trade applications. It features a 5/16-24 UNF thread with a 2-1/4 inch length under head and a 1/4 inch hex drive socket. The fastener is manufactured from alloy steel and finished with a black oxide coating, which provides moderate corrosion resistance and reduces light reflection. Partially threaded along its shank, it is suited for applications where the unthreaded portion must bear shear loads or align mating components. Licensed tradespeople and maintenance technicians in HVAC, electrical, and mechanical service work routinely use this screw type when securing equipment panels, brackets, and structural assemblies.

This screw is appropriate for use in residential and commercial mechanical systems, equipment enclosures, and structural fastening applications that require a fine-thread, high-tensile fastener. The 5/16-24 UNF fine thread pitch provides greater thread engagement and improved resistance to vibration loosening compared to coarse-thread variants, making it well suited for metal-to-metal connections subject to dynamic loads or repeated thermal cycling. It meets ASME B18.3 and ASTM A574 dimensional and mechanical standards.

Key Features

• 5/16-24 UNF fine thread for superior vibration resistance and precise clamping
• 2-1/4 inch length under head, partially threaded for shear and alignment applications
• 1/4 inch hex socket drive compatible with standard hex keys and bit drivers
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion protection and low-reflectance appearance
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as an OEM-style and general-purpose replacement hex socket cap screw for any application requiring a 5/16-24 UNF partially threaded fastener conforming to ASME B18.3 and ASTM A574 specifications.

Installation Notes

Installation should be performed by qualified mechanical or trade technicians using a calibrated hex key or torque wrench with the appropriate 1/4 inch hex bit. De-energize and lock out all equipment before servicing any fastened assembly. Do not exceed the rated mechanical load for the fastener grade, and ensure mating threads are clean and free of debris before installation. Consult applicable codes such as the NEC or equipment manufacturer torque specifications when fasteners are used in electrical enclosures or safety-critical assemblies.