Value Collection MP30037 Hex Head Cap Screw 5/16-18 X 3 in

Product Description

The VALUE COLLECTION MP30037 is a partially threaded hex head cap screw in the 5/16-18 UNC thread configuration with a 3-inch length under head. Manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance, this fastener meets ASME B18.2.1 dimensional standards. The partial thread design provides a smooth shank section that allows for controlled clamping force and is suited for applications requiring a shoulder or bearing surface. These screws are sold in packs of 25 and are a standard inch-series fastener used across mechanical assembly, structural, and trade-service applications.

This fastener is appropriate for general mechanical assembly and structural fastening tasks encountered in HVAC equipment installation, electrical enclosure work, plumbing fixture mounting, and pool equipment service. The 5/16-18 UNC thread size is a widely encountered standard in residential and light commercial equipment. The zinc-plated finish provides a baseline level of corrosion protection suitable for interior and sheltered exterior environments. Each package contains 25 screws, making it practical for both single-job use and small restocking needs.

Key Features

• 5/16-18 UNC thread size, 3-inch length under head — partially threaded for controlled clamping
• Grade 5 steel construction meets ASME B18.2.1 standard for dimensional and mechanical consistency
• Zinc-plated finish provides corrosion resistance for interior and sheltered installations
• Partial threading provides a smooth shank section for bearing surface applications
• Sold in packs of 25 — suitable for job-site use or small-quantity restocking

Compatibility

Designed for general-purpose fastening applications using the 5/16-18 UNC inch-series thread standard, compatible with any standard 5/16-18 tapped hole or nut meeting UNC specifications.

Installation Notes

Install using a standard hex wrench or socket set sized for a 5/16-inch hex head cap screw. Power down or de-energize any equipment before fastening components on electrical or mechanical assemblies. Follow applicable code requirements and equipment manufacturer torque guidance when securing structural or load-bearing connections. Do not use in applications requiring stainless or higher-grade corrosion resistance without verifying that zinc-plated Grade 5 steel meets the environmental requirements of the installation.