Value Collection MSRI03100750-100BX 5/16-18 X 3/4 in Round Head Screw

Product Description

The VALUE COLLECTION MSRI03100750-100BX is a 5/16-18 x 3/4 inch round head machine screw designed for general fastening applications across mechanical, electrical, and light structural assemblies. The slotted drive accepts a standard flat-blade screwdriver. Manufactured from Grade 2 steel with a zinc finish for basic corrosion resistance, this screw follows inch-system UNC (Unified National Coarse) thread standards. The 3/4 inch dimension is measured as length under head. Sold in a box of 100, this screw is a common stockroom staple for trade shops, contractors, and service technicians who need reliable standard fasteners on hand.

This machine screw is suited for use in residential and light commercial applications including panel enclosure assembly, junction box cover attachment, equipment mounting, and general mechanical assembly. The UNC 5/16-18 thread pitch is a widely used coarse-thread standard, making this screw compatible with pre-tapped holes and standard hex nuts across a broad range of trade and industrial settings. The round head profile sits above the material surface and distributes clamping load over a wider bearing area than a flat head, making it appropriate where countersinking is not required.

Key Features

• 5/16-18 UNC coarse thread for compatibility with standard pre-tapped holes and nuts
• Round head profile provides a wide bearing surface without countersinking
• Slotted drive accepts a standard flat-blade screwdriver
• Grade 2 steel construction for general-purpose fastening strength
• Zinc finish provides basic corrosion resistance for indoor and protected environments
• Sold in a box of 100 for efficient stockroom inventory

Compatibility

Designed as a general-purpose UNC inch-standard machine screw suitable for use with standard 5/16-18 tapped holes and mating hardware in mechanical, electrical, and light structural assemblies.

Installation Notes

Installation is performed using a flat-blade screwdriver sized to the slot of the screw head. De-energize and lock out any electrical equipment before installing or removing fasteners in live panels or enclosures. Verify the mating threaded hole or nut matches the 5/16-18 UNC thread standard before installation. Do not overtighten, as Grade 2 steel has lower proof and tensile strength ratings than higher-grade fasteners.