Value Collection MPRI03101500-050BX Machine Screw 5/16-18

Product Description

The VALUE COLLECTION MPRI03101500-050BX is a 5/16-18 round head Phillips machine screw designed for general-purpose fastening in metal and wood assemblies. Built from Grade 2 steel with a zinc-plated finish, this screw offers baseline corrosion resistance suitable for indoor and light-duty applications. The 1.5-inch length is measured under the head, and the UNC thread form provides reliable engagement in standard tapped holes. Sold in a minimum quantity of 50, this fastener is well-suited for production runs, maintenance stockrooms, and general shop use where consistent hardware is needed in volume.

This screw is appropriate for residential and light commercial construction, equipment assembly, and general mechanical applications. The Phillips drive type is compatible with standard #2 Phillips bits and power drivers. The round head profile distributes clamping load over a broader bearing surface compared to flat head styles, making it a practical choice when countersinking is not required. Electricians, HVAC technicians, plumbers, and general contractors commonly stock this fastener size for panel mounting, bracket installation, and equipment enclosure work.

Key Features

• 5/16-18 UNC thread for engagement in standard tapped holes and hex nuts
• Grade 2 steel construction for general-purpose strength requirements
• Zinc-plated finish provides light corrosion resistance for indoor environments
• Round head profile eliminates need for countersinking
• Phillips drive compatible with standard #2 bits and power drivers
• Sold in packs of 50 for stocking and production use

Compatibility

Designed as a standard UNC machine screw compatible with any 5/16-18 tapped hole, nut, or threaded insert conforming to ASME B18.6.3 inch-series specifications.

Installation Notes

Install using a #2 Phillips screwdriver or matching power bit at controlled torque to avoid cam-out or thread stripping in softer base materials. Confirm the receiving hole is tapped to 5/16-18 UNC before installation. Do not use impact drivers without a torque-limiting clutch, as Grade 2 steel has lower proof load than Grade 5 or Grade 8 fasteners. Follow applicable mechanical codes for the assembly type being serviced.