Value Collection 403040PR Hex Cap Screw 1/4-20 X 3-3/4 in Grade 2

Product Description

The VALUE COLLECTION 403040PR is a 1/4-20 UNC hex head cap screw measuring 3-3/4 inches under the head. Made from Grade 2 steel with a zinc-plated finish, this fastener is partially threaded and sized for general-purpose mechanical assembly. The 7/16-inch hex drive allows installation with standard wrenches or sockets. Grade 2 steel provides adequate tensile strength for light-to-medium duty applications where high-strength alloy hardware is not required. The zinc coating offers basic corrosion resistance in dry and mildly humid environments.

This fastener is suited for general mechanical, plumbing support, electrical enclosure, and HVAC bracket assembly work where 1/4-20 UNC threading is specified. Partial threading allows the unthreaded shank to bear shear loads and maintain alignment through clearance holes before engaging the threaded section in the nut or tapped hole. Typical applications include light structural connections, equipment mounting, and panel assembly across residential and light commercial trade work.

Key Features

• 1/4-20 UNC thread form for broad compatibility with standard tapped holes and nuts
• 3-3/4 inch length under head accommodates thick material stacks or deep clearance applications
• Partial threading allows shank to bear shear loads and aid alignment
• Grade 2 steel construction suitable for light-to-medium duty fastening
• Zinc-plated finish provides basic corrosion resistance
• 7/16-inch hex drive compatible with standard wrenches and sockets

Compatibility

Designed for use in any application requiring a 1/4-20 UNC partially threaded hex head cap screw with a 3-3/4 inch length under head. Compatible with standard 1/4-20 UNC nuts and tapped holes conforming to inch-series thread standards.

Installation Notes

Install with a 7/16-inch open-end wrench, box wrench, or socket. Ensure the mating nut or tapped hole is clean and free of debris before threading to avoid cross-threading. Do not exceed the torque rating appropriate for Grade 2 fasteners at this thread size as specified by your applicable code or engineering reference. Apply thread lubricant or thread-locking compound only where required by the assembly specification.