Value Collection 581481PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 581481PR is a hex socket cap screw designed for high-strength fastening in mechanical, structural, and industrial assemblies. Manufactured from alloy steel with a black oxide finish, it offers solid corrosion resistance in moderate environments and the tensile strength expected from an ASTM A574-compliant fastener. The screw measures 6-1/2 inches in length under head with a 3/8-16 UNC thread and accepts a 5/16-inch hex drive. It is partially threaded, making it suitable for applications that require a smooth shank section to bear shear loads or locate components accurately.

This fastener is used in a wide range of industrial and trade applications including machinery assembly, equipment mounting, structural fabrication, and maintenance repair work. The 3/8-16 UNC coarse thread offers reliable engagement in steel and iron components and resists cross-threading in field conditions. It is suitable for both shop and field installation by millwrights, pipefitters, ironworkers, and general mechanical technicians working on production equipment, frames, brackets, and structural connections.

Key Features

• Alloy steel construction meets ASTM A574 and ASME/ANSI B18.3 standards for high-strength socket cap screws
• Black oxide finish provides moderate corrosion resistance and reduces light reflection in service environments
• Partially threaded shank allows precise component location and shear load transfer
• 3/8-16 UNC coarse thread for reliable engagement in standard tapped holes
• 5/16-inch hex drive socket for installation with standard Allen keys or hex bit drivers
• 6-1/2-inch length under head suits deep-reach fastening applications

Compatibility

Designed as an OEM-style replacement or direct-use fastener for applications requiring a 3/8-16 UNC partially threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation requires a 5/16-inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before driving the fastener. De-energize or lock out any equipment before performing fastener installation or replacement per applicable OSHA lockout/tagout procedures. Do not substitute a smaller drive tool, as rounding the socket will damage the fastener head.