Value Collection 581466PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 581466PR is a hex socket cap screw designed for high-strength mechanical fastening in a wide range of industrial and commercial applications. It features a 3/8-16 UNC thread size, a 1-3/8 inch length under head, and a 5/16 inch hex drive. The fastener is machined from alloy steel and finished with a black oxide coating, which provides moderate corrosion resistance and reduces light reflection. This screw is fully threaded and conforms to ASME/ANSI B18.3 and ASTM A574 standards. It is used by machinists, millwrights, pipefitters, and maintenance technicians working in equipment assembly and structural fastening tasks.

This cap screw is suited for residential and commercial equipment assembly, machine building, fixture fabrication, and structural component fastening. The 3/8-16 UNC coarse thread provides reliable engagement in steel, cast iron, and other ferrous materials. The hex socket drive allows for high torque application in confined spaces where a wrench or open-drive tool cannot reach. It is commonly used in HVAC equipment frames, pump housings, electrical enclosures, and general mechanical assemblies.

Key Features

• 3/8-16 UNC fully threaded coarse thread for strong engagement in ferrous materials
• 1-3/8 inch length under head for medium-depth fastening applications
• 5/16 inch hex socket drive enables high-torque installation in tight spaces
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide finish provides moderate corrosion and abrasion resistance
• Conforms to ASME/ANSI B18.3 dimensional standards for consistent fitment

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any threaded hole or nut accepting a 3/8-16 UNC coarse thread pattern.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 5/16 inch hex key or socket driver. De-energize and lock out all equipment before fastening or removing hardware in mechanical assemblies. Do not over-drive; apply torque gradually and verify thread engagement before full tightening. Follow applicable ASME or equipment manufacturer guidelines for fastener torque specifications.