Value Collection 403190PR Hex Head Cap Screw 1/2-13 X 2-1/4 in

Product Description

The VALUE COLLECTION 403190PR is a partially threaded hex head cap screw designed for general-purpose fastening in industrial, mechanical, and structural applications. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener measures 1/2-13 thread size with a 2-1/4 inch length under head and follows UNC (Unified National Coarse) thread standards. The partial threading allows for a smooth shank section, which provides better load distribution in bolted joint applications. Installation requires a 3/4 inch hex key or wrench. This screw is a standard inch-system fastener suitable for use by maintenance technicians, millwrights, pipefitters, and general contractors working with metal assemblies and structural connections.

This fastener is suited for light- to medium-duty bolted connections in residential, commercial, and industrial settings. Common applications include equipment frames, brackets, structural steel connections, and mechanical assemblies where a partially threaded fastener is specified to allow the shank to pass through a clearance hole without thread engagement until it reaches the nut or tapped hole. The UNC thread form is widely used in North American inch-system hardware applications.

Key Features

• 1/2-13 UNC thread size for compatibility with standard inch-system nuts and tapped holes
• 2-1/4 inch length under head provides adequate grip length for typical structural fastening
• Partial threading design allows smooth shank section for improved load distribution
• Grade 2 steel construction suitable for general-purpose, non-critical fastening
• Zinc-plated finish provides basic corrosion resistance for indoor and sheltered applications
• 3/4 inch hex drive fits standard wrenches and sockets

Compatibility

Designed for use with standard 1/2-13 UNC inch-system nuts, washers, and tapped components conforming to ASME B18.2.1 hex cap screw standards.

Installation Notes

Installation is performed with a standard 3/4 inch open-end, box, or socket wrench. Ensure the mating nut or tapped hole is clean and free of debris before assembly. Apply appropriate torque per the applicable fastener standard or engineering specification for Grade 2 steel at this diameter. Do not use impact tools without confirming torque limits, as Grade 2 steel has lower proof load values than Grade 5 or Grade 8 fasteners.