Value Collection MP30057 Hex Cap Screw 3/8-16 Grade 5 Zinc 25pk

Product Description

The VALUE COLLECTION MP30057 is a 3/8-16 hex head cap screw designed for general-purpose fastening in mechanical, HVAC, plumbing, and electrical equipment assemblies. Made from Grade 5 steel with a zinc-plated finish, this partially threaded fastener meets ASME B18.2.1 standards for dimensional accuracy and head geometry. The 3/8-16 UNC thread pattern and 1-3/4 inch length under head make it a common choice for structural and equipment mounting applications across residential and commercial trade work. Sold in a package of 25, it suits service techs and installers who need reliable hardware on hand for jobsite repairs or unit installations.

This hex head cap screw is used across a wide range of trade applications including HVAC equipment mounting, electrical enclosure assembly, plumbing bracket fastening, and general mechanical equipment repair. The partially threaded shank provides stronger clamping force in through-bolt applications compared to fully threaded designs, making it well suited for connecting flanged components or securing panels and frames. It is compatible with standard 3/8-16 UNC nuts and tapped holes in steel and aluminum assemblies.

Key Features

• Grade 5 steel construction provides reliable tensile strength for structural fastening
• Zinc-plated finish offers basic corrosion resistance for indoor and protected outdoor installations
• Partially threaded shank improves clamping performance in through-bolt configurations
• 3/8-16 UNC thread standard ensures broad compatibility with standard nuts and tapped fittings
• Meets ASME B18.2.1 dimensional standards for consistent head geometry and thread accuracy
• Package quantity of 25 reduces per-fastener cost and supports routine service stock

Compatibility

Designed as a standard 3/8-16 UNC hex head cap screw for use in any application requiring an ASME B18.2.1-compliant partially threaded fastener in Grade 5 steel.

Installation Notes

Install with the appropriate 9/16 inch hex wrench or socket driver; do not substitute metric tooling on UNC fasteners. Apply torque in accordance with applicable Grade 5 fastener torque tables for the joint material being used. Ensure mating threads are clean and free of debris before assembly. Do not exceed the rated torque for Grade 5 steel at this thread size, as over-torquing can cause thread stripping or fastener failure.