Value Collection R63060689 Flat Head Machine Screw 5/16-18

Product Description

The VALUE COLLECTION R63060689 is a flat head slotted machine screw designed for general fastening applications in metal, plastic, and composite assemblies. It features a 5/16-18 UNC (Unified National Coarse) thread form with an overall length of 1-1/2 inches, measured from the top of the head to the tip. Constructed from 18-8 stainless steel with a bright uncoated finish, this screw delivers solid corrosion resistance for both indoor and outdoor service environments. The countersunk flat head sits flush with the mating surface when installed correctly, making it a common choice where clearance or appearance matters. Machinists, maintenance techs, and general contractors install this fastener across a wide range of light-to-medium duty applications.

This screw is suited for use in residential and commercial maintenance, light fabrication, equipment assembly, and repair work. The coarse UNC thread engages quickly, reducing installation time in applications where fine-thread engagement is not required. The slotted drive is compatible with standard flat-blade screwdrivers and is frequently specified in applications requiring simple field serviceability. Minimum order quantity is 5 pieces, and the package ships as a single-unit quantity.

Key Features

• 5/16-18 UNC coarse thread for fast engagement and broad tap compatibility
• Flat countersunk head seats flush with the work surface
• Slotted drive accepts standard flat-blade screwdrivers for field serviceability
• 18-8 stainless steel construction for corrosion resistance in wet or outdoor environments
• Bright uncoated finish — no plating that can chip or flake under torque
• Overall length of 1-1/2 inches with full-length thread measurement under head

Compatibility

Designed as an OEM-style replacement or standard fastener for any application requiring a 5/16-18 UNC flat head slotted machine screw with a 1-1/2 inch overall length in 18-8 stainless steel.

Installation Notes

Install using a properly sized flat-blade screwdriver or slotted bit to avoid cam-out and fastener damage. Ensure the receiving material is tapped or pre-threaded to 5/16-18 UNC specification before driving. Do not overtorque stainless steel fasteners, as galling can occur — apply an appropriate anti-seize compound in high-friction or high-temperature installations. Follow applicable mechanical and building codes for fastener selection in structural applications.