Value Collection 580767PR Flat Head Machine Screw 5/16-18

Product Description

The VALUE COLLECTION 580767PR is a flat head slotted machine screw sized 5/16-18 x 2-1/4 inches overall length. It is manufactured from Grade 2 steel with a zinc finish for basic corrosion resistance. The flat head profile sits flush with the mating surface when fully driven, making it a standard choice for assemblies where a smooth, low-profile fastener is required. The slotted drive is compatible with flat-blade screwdrivers and common bit sets. This screw uses Unified National Coarse (UNC) threading and is sold in a minimum order quantity of 100 units per transaction.

This fastener is suited for general-purpose mechanical assembly in light industrial, maintenance, and fabrication applications. The 5/16-18 UNC thread is one of the most common inch-series coarse thread sizes, fitting a wide range of tapped holes and standard hex nuts. Typical use cases include metal-to-metal fastening in enclosures, brackets, machinery panels, and structural assemblies where a countersunk flat head is required to maintain a flush surface finish. Installation is handled by mechanical assemblers, maintenance technicians, and tradespeople working across HVAC, electrical, and general mechanical disciplines.

Key Features

• 5/16-18 UNC thread — common coarse inch-series thread, compatible with standard tapped holes and nuts
• 2-1/4 inch overall length with full-length measurement under head also at 2-1/4 inches
• Flat head profile provides flush-mount finish when countersunk
• Slotted drive accepts standard flat-blade screwdrivers and bits
• Grade 2 steel construction with zinc finish for general-purpose corrosion protection
• Sold in multiples of 100 units — suitable for production and maintenance stocking

Compatibility

Designed for use in standard 5/16-18 UNC tapped holes. Compatible with corresponding hex nuts, flat washers, and lock washers of matching thread size in inch-series fastener systems.

Installation Notes

Power down or de-energize any equipment before fastener service on live assemblies. A flat-blade screwdriver or slotted bit sized to the screw head is required for installation. Verify hole is properly tapped or threaded to 5/16-18 UNC specification before driving. Do not overtighten Grade 2 fasteners beyond the torque ratings specified in the applicable engineering or equipment documentation.