Value Collection 581367P Hex Socket Cap Screw 1/4-20 Unc

Product Description

The VALUE COLLECTION 581367P is a hex socket cap screw designed for high-strength fastening applications across mechanical assembly, industrial maintenance, and fabrication work. Sized at 1/4-20 UNC with a 7/16 inch length under head, it is fully threaded and driven with a 3/16 inch hex key. Constructed from alloy steel with a black oxide finish, this fastener delivers solid corrosion resistance and a clean, low-profile appearance. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for structural and mechanical assemblies where a recognized fastener specification is required. Machinists, millwrights, and maintenance technicians typically install these in equipment housings, fixtures, and jigs.

This screw is suited for light mechanical assemblies requiring a compact, recessed-drive fastener. The 1/4-20 UNC thread is one of the most common unified coarse thread sizes in North American industrial and commercial equipment. The black oxide alloy steel construction makes it appropriate for indoor or protected-environment applications where moderate corrosion resistance is acceptable. It is commonly used in machine frames, guard panels, brackets, and similar structural or non-structural fastening tasks encountered in manufacturing and maintenance environments.

Key Features

• 1/4-20 UNC thread for compatibility with the most widely used coarse thread standard in North American equipment
• Fully threaded body maximizes thread engagement across the entire 7/16 inch length under head
• Alloy steel construction provides higher tensile strength compared to standard carbon steel fasteners
• Black oxide finish offers mild corrosion resistance and reduces light reflection in precision assemblies
• Meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional accuracy and mechanical properties
• 3/16 inch hex socket drive for use with standard Allen keys and hex bit drivers

Compatibility

Designed as an OEM-style replacement or standard-stock fastener for any application calling for a 1/4-20 UNC fully threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Install using a 3/16 inch hex key or Allen bit driver. De-energize and lock out any equipment before fastener replacement or installation per applicable OSHA lockout/tagout procedures. Do not exceed the fastener's rated tensile strength by over-torquing; refer to a standard torque table for 1/4-20 alloy steel cap screws for proper seating values. Black oxide fasteners used in wet or outdoor environments should be supplemented with a compatible thread lubricant or anti-corrosion compound to maintain finish integrity.