Holo-krome 73078 Hex Socket Cap Screw 5/16-24 Unf

Product Description

The HOLO-KROME 73078 is a hex socket cap screw designed for high-strength fastening applications where a recessed drive and a clean, corrosion-resistant finish are required. Manufactured from alloy steel and finished with a black oxide coating, this screw offers improved surface protection against mild corrosion while maintaining the mechanical strength expected of an ASME B18.3 and ASTM A574 compliant fastener. The 5/16-24 UNF thread provides fine-pitch engagement for applications that demand precise clamping force and resistance to loosening under vibration. The 1/4-inch hex socket drive requires a standard hex key or Allen driver for installation and removal.

This cap screw is suited for use in mechanical assemblies, equipment frames, machine guards, and structural joints where a low-profile fastener head and controlled torque application are important. The fully threaded 5/8-inch length under head allows engagement along the full shank, making it appropriate for thinner material stacks or close-tolerance through-bolt applications. Licensed trades and industrial maintenance technicians commonly use this fastener in HVAC equipment panels, pump housings, and related mechanical systems.

Key Features

• 5/16-24 UNF fine-pitch thread for high clamping force and vibration resistance
• Fully threaded 5/8-inch length under head for maximum thread engagement in thin materials
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• 1/4-inch hex socket drive compatible with standard hex keys and socket drivers
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as an OEM-style hex socket cap screw replacement for mechanical assemblies requiring a 5/16-24 UNF fully threaded fastener with a 1/4-inch hex drive and black oxide finish.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician using a correctly sized 1/4-inch hex key or Allen driver to avoid cam-out and socket damage. De-energize and lock out any equipment before accessing fastened assemblies in electrical or mechanical panels. Do not over-torque alloy socket cap screws in tapped blind holes, as this can cause thread stripping or screw failure. Follow applicable equipment manufacturer torque specifications for the assembly being serviced.