Value Collection 581375PR Hex Socket Cap Screw 1/4-20

Product Description

The Value Collection 581375PR is a hex socket cap screw designed for secure fastening in mechanical assemblies, industrial equipment, and structural applications. It features a 1/4-20 UNC thread size and measures 3.25 inches under the head, making it suited for through-bolting or tapped-hole applications with moderate depth requirements. The screw is partially threaded, which improves clamping force in bolted joints by maintaining a smooth shank in the grip area. Machined from alloy steel and finished with a black oxide coating, it offers improved corrosion resistance over bare steel while maintaining tight dimensional tolerances. A licensed technician or machinist drives this fastener with a 3/16-inch hex key.

This hex socket cap screw is commonly used in manufacturing, machinery maintenance, and mechanical assembly work where a low-profile, high-strength fastener is required. The socket-drive head sits flush or recessed in counterbored holes, making it appropriate for applications where exposed bolt heads are not acceptable. It is suitable for use in industrial equipment, jigs and fixtures, pump housings, motor mounts, and general fabrication work requiring a reliable alloy steel fastener with controlled torque application.

Key Features

• 1/4-20 UNC thread size with partial threading for improved joint clamping
• 3.25 inches length under head for deeper through-bolt and tapped applications
• 3/16-inch hex socket drive for use with standard Allen or hex key tools
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide finish provides mild corrosion resistance and reduces galling

Compatibility

Designed as a standard 1/4-20 UNC hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574, suitable for use in any tapped hole or through-bolt application requiring a 1/4-20 thread pitch and a 3/16-inch hex drive.

Installation Notes

Installation is performed by machinists, maintenance technicians, or mechanical contractors using a 3/16-inch hex key or Allen driver. Ensure the mating tapped hole is clean and free of debris before installation. Apply thread-locking compound or fastener lubricant as required by the assembly specification. Do not exceed the torque rating specified by the design engineer for the given material and joint configuration.