Value Collection 581500PS Hex Socket Cap Screw 3/8-24 Unf

Product Description

The VALUE COLLECTION 581500PS is a hex socket cap screw designed for high-strength fastening applications in mechanical, industrial, and maintenance environments. It features a 3/8-24 UNF thread with a 4-1/2 inch length under head and a 5/16 inch hex drive. The screw is partially threaded, allowing for positive clamping force between mating components. Constructed from alloy steel with a black oxide finish, it provides solid corrosion resistance in moderate service conditions. Licensed trades and maintenance professionals use this fastener in machine assembly, equipment repair, and structural component attachment where a recessed drive is required.

This cap screw is suited for use in precision mechanical assemblies, industrial machinery, and general maintenance applications requiring fine-thread engagement. The 3/8-24 UNF thread pitch is commonly specified where vibration resistance or tighter thread engagement is needed compared to coarse-thread fasteners. The black oxide coating reduces light reflection and offers mild protection against corrosion in dry or lightly oiled environments. Typically installed by machinists, millwrights, or maintenance technicians working on equipment where socket-drive access is required.

Key Features

• 3/8-24 UNF fine thread for tight, vibration-resistant engagement
• 4-1/2 inch length under head for deep clamping or through-bolt applications
• 5/16 inch hex socket drive for use with standard Allen or hex key tooling
• Partially threaded shank provides precise clamping and shear strength
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide finish for mild corrosion resistance and reduced surface reflectivity

Compatibility

Designed as an OEM-style and general-use replacement hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications, suitable for any application requiring a 3/8-24 UNF partially threaded socket cap screw with a 4-1/2 inch length under head.

Installation Notes

Install using a 5/16 inch hex key or Allen driver. Ensure mating threads are clean and free of debris before installation. Do not exceed the torque rating specified by the equipment manufacturer for this thread size and material grade. Power down and de-energize any machinery before performing fastener service or assembly work.