Value Collection 403074PS Hex Head Cap Screw 5/16-18x2-3/4

Product Description

The VALUE COLLECTION 403074PS is a partially threaded hex head cap screw designed for general-purpose fastening applications across mechanical, structural, and trade installations. This fastener features a 5/16-18 UNC thread size with a 2-3/4 inch length under head. It is manufactured from Grade 2 steel with a zinc-plated finish that provides a basic level of corrosion resistance. The partial threading allows the unthreaded shank to act as a shoulder, making it well suited for applications where shear load, alignment, or controlled clamping is required. Installation is performed using a 1/2 inch hex key or appropriate wrench.

This cap screw is used across a wide range of residential and commercial trade applications including HVAC equipment assembly, plumbing fixture mounting, electrical panel and enclosure fastening, and general mechanical assembly. Anywhere a reliable, standard-inch threaded fastener is needed for load-bearing or structural connections, this screw fills that role. It is a staple fastener for service technicians and maintenance professionals working with inch-measurement hardware.

Key Features

• 5/16-18 UNC thread standard - widely compatible with inch-measurement hardware
• 2-3/4 inch length under head for deeper engagement in thicker assemblies
• Partially threaded shank provides shear resistance and alignment support
• Grade 2 steel construction suitable for general-purpose fastening loads
• Zinc-plated finish adds basic corrosion and oxidation resistance
• 1/2 inch hex key size for standard wrench or socket installation

Compatibility

Designed as a standard inch-series UNC hex head cap screw for general mechanical and structural fastening applications wherever a 5/16-18 partially threaded fastener is specified.

Installation Notes

Installation should be performed by a qualified technician familiar with fastener torque requirements for Grade 2 steel hardware. Always de-energize or shut down equipment before accessing fastened assemblies. Use the correct 1/2 inch wrench or socket to avoid rounding the hex head. Do not substitute this fastener in applications requiring Grade 5 or Grade 8 rated hardware without engineering review.