Value Collection MPPI03103000-050BX Machine Screw 5/16-18

Product Description

The VALUE COLLECTION MPPI03103000-050BX is a 5/16-18 UNC machine screw measuring 3 inches in length under the head, with a pan head and Phillips drive. Constructed from Grade 2 steel with a zinc-plated finish, this screw provides reliable corrosion resistance for general-purpose fastening tasks. Sold in boxes of 50, it is a standard inch-system fastener suited for maintenance, fabrication, and assembly work across mechanical, HVAC, plumbing, and electrical trade applications.

This machine screw is used in a wide range of light- to medium-duty applications where a pan head profile and Phillips drive are required. The 5/16-18 UNC thread designation makes it compatible with standard tapped holes and nuts of the same thread specification. The zinc plating provides a baseline level of corrosion protection for indoor and mildly exposed environments. Tradespeople and fabricators commonly use this fastener when assembling equipment enclosures, mounting brackets, and mechanical components.

Key Features

• 5/16-18 UNC thread for compatibility with standard inch-system tapped holes and hex nuts
• 3-inch length measured under the head for consistent installation depth
• Pan head profile provides a low-profile bearing surface without a washer
• Phillips drive for use with standard Phillips screwdrivers and bits
• Grade 2 steel construction suitable for general-purpose fastening loads
• Zinc-plated finish for basic corrosion resistance in non-harsh environments

Compatibility

Designed for use with standard 5/16-18 UNC tapped holes, threaded inserts, and hex nuts in inch-system assemblies. No washer is included or required with this style.

Installation Notes

Install using a Phillips screwdriver or Phillips bit matched to the screw head size to avoid cam-out and head damage. Ensure the mating tapped hole or nut is clean and free of debris before threading. Apply appropriate torque for Grade 2 steel to avoid stripping; do not exceed the material grade load rating. De-energize and isolate any equipment before fastening components to electrical or mechanical assemblies.