Value Collection 011405PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 011405PR is a partially threaded hex socket cap screw designed for high-strength mechanical fastening applications. It features a 1/2-20 UNF thread size and measures 2-1/2 inches in length under the head. The screw is machined from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light reflection on the fastener surface. Drive engagement is via a 3/8-inch hex socket. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding structural and mechanical assembly work performed by maintenance technicians, machinists, and industrial tradespeople.

This cap screw is suited for use in general mechanical assemblies, machine frames, tooling fixtures, and equipment maintenance applications where a recessed hex drive is required. Partial threading allows the unthreaded shank to act as a shoulder or locating feature in precision assemblies. The fine 20-thread-per-inch pitch provides greater clamping force and vibration resistance compared to coarse-thread equivalents of the same diameter.

Key Features

• 1/2-20 UNF fine thread for high clamping load and vibration resistance
• 2-1/2 inch length under head with partial threading for shoulder applications
• 3/8-inch hex socket drive for standard hex key or socket wrench installation
• Alloy steel construction for high tensile strength per ASTM A574
• Black oxide finish for mild corrosion resistance and low-glare appearance
• Meets ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard 1/2-20 UNF hex socket cap screw for use in any application requiring ASME/ANSI B18.3 compliant socket head fasteners in that thread size and length.

Installation Notes

Installation requires a 3/8-inch hex key or socket driver; ensure the drive tool is fully seated before applying torque to avoid rounding the socket. Power down or de-energize any equipment before accessing fastener locations on live machinery. Follow applicable machinery safety standards and facility lockout/tagout procedures prior to disassembly or assembly. Do not substitute this fine-thread fastener in applications specified for coarse UNC thread without verifying thread engagement and load requirements.