Value Collection 403030PR Hex Head Cap Screw 1/4-20 X 2-1/2 in

Product Description

The VALUE COLLECTION 403030PR is a 1/4-20 UNC hex head cap screw designed for general-purpose fastening in mechanical, structural, and trade applications. Manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance, this screw features partial threading along a 2-1/2-inch length under the head. The 1/4-20 thread designation indicates a 1/4-inch nominal diameter with 20 threads per inch, conforming to Unified National Coarse (UNC) standards. A 7/16-inch hex key size makes it compatible with standard wrenches and sockets. This fastener is suited for light-duty clamping and assembly work where Grade 2 mechanical properties are acceptable.

This cap screw is appropriate for a wide range of residential and light commercial applications, including equipment mounting, bracket assembly, and general mechanical fabrication. Partial threading allows the unthreaded shank to bear shear loads and align mating components before engagement. It is commonly specified by HVAC technicians, plumbers, electricians, and general contractors when securing panels, brackets, and structural members using standard inch-series hardware.

Key Features

• 1/4-20 UNC thread standard for broad compatibility with inch-series nuts and tapped holes
• 2-1/2-inch length under head for deeper fastening reach in stacked or thick assemblies
• Partial threading allows shank to resist shear and align components
• Grade 2 steel construction suitable for light-duty mechanical and structural use
• Zinc-plated finish provides basic protection against corrosion in dry to mildly humid environments
• 7/16-inch hex drive size works with standard open-end, box, and socket wrenches

Compatibility

Designed for use with standard 1/4-20 UNC inch-series nuts, washers, and tapped holes in steel, aluminum, and similar materials. Fits any application calling for a 1/4-20 x 2-1/2-inch partially threaded hex head cap screw to Grade 2 specifications.

Installation Notes

Installation requires a 7/16-inch wrench or socket. Ensure the mating thread or tapped hole is clean and free of debris before driving the fastener. Do not overtighten Grade 2 fasteners beyond their rated proof load, as they are not rated for high-torque or high-stress structural connections. Follow applicable mechanical codes and equipment manufacturer specifications for proper fastener selection and torque guidance.