Value Collection R63060648 Flat Head Machine Screw 5/16-18

Product Description

The VALUE COLLECTION R63060648 is a flat head slotted machine screw designed for general fastening applications in metal, plastic, and composite assemblies. Sized at 5/16-18 UNC thread with an overall length of 1-1/4 inches, this screw features a countersunk flat head profile that sits flush with or below the surface of the work material when properly installed. Manufactured from 18-8 stainless steel with a bright, uncoated finish, it offers reliable corrosion resistance for both indoor and outdoor service environments. Licensed trades including electricians, HVAC installers, and plumbers use this fastener for panel mounting, equipment assembly, and structural connections where flush hardware is required.

This screw is suited for residential and light commercial applications where a clean, flush-mount fastener is specified. The 5/16-18 coarse-thread UNC profile provides strong thread engagement in standard tapped holes and threaded inserts. The slotted drive accepts a standard flat-blade screwdriver, making it accessible with basic hand tools or a slotted power bit. It is sold individually but must be ordered in multiples of 10.

Key Features

• 18-8 stainless steel construction provides corrosion resistance without a surface coating
• Flat countersunk head sits flush with the mating surface for a clean finish
• 5/16-18 UNC coarse thread for use in standard tapped holes and threaded inserts
• 1-1/4 inch overall length with full-length thread under head
• Slotted drive accepts standard flat-blade screwdrivers and power bits
• Bright uncoated finish maintains dimensional accuracy and is compatible with stainless hardware assemblies

Compatibility

Designed as a standard UNC-thread replacement or new-installation fastener for any application requiring a 5/16-18 x 1-1/4 inch flat head slotted machine screw in stainless steel.

Installation Notes

Install using a correctly sized flat-blade screwdriver or slotted power bit to avoid cam-out and head damage. The mating hole should be countersunk to the correct angle to allow the flat head to seat fully flush. De-energize and lock out any electrical or mechanical equipment before fastening components in live panels or assemblies. Follow applicable NEC, IPC, or IFGC guidelines where fasteners are used in code-governed installations.