Value Collection 581504PR Hex Socket Cap Screw 3/8-24 Unf

Product Description

The VALUE COLLECTION 581504PR is a partially threaded hex socket cap screw designed for high-strength fastening applications across mechanical, industrial, and fabrication environments. It features a 3/8-24 UNF thread size with a 5-1/2 inch length under head and a 5/16 inch hex drive. Constructed from alloy steel with a black oxide finish, this screw provides solid corrosion resistance and maintains mechanical integrity under high-load and vibration-prone conditions. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it a reliable choice for spec-driven work where fastener grade and geometry matter.

This socket cap screw is suited for use in equipment assembly, machinery mounting, jigs and fixtures, and structural fastening tasks where socket-drive access is required and a partially threaded shank is preferred for clamping force. The fine 3/8-24 UNF thread pitch offers tighter thread engagement compared to coarse-thread equivalents, making it appropriate for applications that benefit from precise torque control or where vibration resistance is a consideration. Typically installed by machinists, millwrights, pipefitters, and general mechanical tradespeople.

Key Features

• 3/8-24 UNF fine thread for precise torque engagement and vibration resistance
• 5-1/2 inch length under head with partial threading for optimized clamping performance
• 5/16 inch hex socket drive for use with standard hex keys and socket tools
• Alloy steel construction rated to ASTM A574 for high tensile strength
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• Meets ASME/ANSI B18.3 dimensional standards for consistent fitment

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for applications requiring a 3/8-24 UNF partially threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Install using a properly sized 5/16 inch hex key or socket driver to avoid drive recess damage. Ensure mating threads are clean and free of debris before installation. Follow applicable torque specifications from the equipment manufacturer or relevant ASME standards for 3/8-24 alloy steel fasteners. Do not exceed rated torque values, as overtightening alloy socket cap screws can result in thread stripping or fastener failure.