Value Collection 580737PR 5/16-18 Machine Screw Flat Slotted

Product Description

The VALUE COLLECTION 580737PR is a 5/16-18 x 1-1/4 inch flat head slotted machine screw manufactured from Grade 2 steel with a zinc finish. It uses a Unified National Coarse (UNC) thread form and is measured as overall length, meaning the full 1-1/4 inch dimension runs from tip to the top of the flat head. The zinc coating provides basic corrosion resistance for general indoor and light-duty applications. This screw is a standard commodity fastener used across mechanical assembly, maintenance, and fabrication work in trade and industrial settings.

This screw is suited for general-purpose fastening in metal, wood, and plastic assemblies where a flush or countersunk head profile is required. The slotted drive accepts a standard flat-blade screwdriver, making it accessible in field and shop environments without specialty tooling. Typical applications include equipment panels, junction box covers, structural brackets, and light mechanical assemblies. It is sold in minimum order quantities of 100 pieces per order, with each package containing 1 unit counted toward that minimum.

Key Features

• 5/16-18 UNC thread for broad compatibility with standard tapped holes and nuts
• Flat head profile sits flush or countersunk in chamfered holes
• Slotted drive works with standard flat-blade screwdrivers
• Grade 2 steel construction provides adequate strength for general-purpose fastening
• Zinc finish offers basic corrosion protection in dry indoor environments
• 1-1/4 inch overall length with no washer face, full shank to head

Compatibility

Designed as a standard 5/16-18 UNC flat head machine screw suitable for use wherever a Grade 2 steel, zinc-finished fastener of this thread size and length is specified.

Installation Notes

Installation is performed with a standard flat-blade screwdriver sized to match the slot width. The receiving hole should be properly drilled and countersunk to accept the flat head angle before driving the screw. Do not overtighten, as Grade 2 steel has lower tensile strength than higher-grade fasteners and is not rated for high-torque or high-vibration structural connections. Follow applicable mechanical assembly standards and equipment manufacturer specifications when selecting fastener grade and finish for the application.