Value Collection 580723PR Flat Head Machine Screw 5/16-18

Product Description

The VALUE COLLECTION 580723PR is a 5/16-18 flat head slotted machine screw with a 3/4-inch overall length. Made from Grade 2 steel with a zinc finish, this fastener is designed for general-purpose mechanical assembly where a flush or countersunk surface is required. The unified coarse (UNC) thread pattern provides reliable clamping force in standard threaded holes and tapped materials. The slotted drive accepts a standard flat-blade screwdriver for installation and removal. This screw is sold in a minimum order quantity of 100 pieces, making it appropriate for production, maintenance shops, and field service kits.

This screw suits a wide range of industrial, HVAC, electrical, and mechanical assembly applications where a countersunk profile is needed to keep the fastener flush with or below the mating surface. Typical uses include panel attachment, bracket mounting, and equipment enclosure assembly in both light commercial and residential service environments. The zinc coating provides basic corrosion resistance suitable for indoor and protected outdoor installations.

Key Features

• 5/16-18 UNC thread for use in standard tapped holes and threaded inserts
• Flat head profile allows flush or countersunk installation
• Slotted drive compatible with standard flat-blade screwdrivers
• Grade 2 steel construction for general-purpose mechanical load requirements
• Zinc finish provides basic corrosion protection in indoor and sheltered environments
• 3/4-inch overall length equals 3/4-inch length under head with no washer

Compatibility

Designed as a general-purpose UNC machine screw compatible with any application requiring a 5/16-18 threaded fastener with a flat countersunk head profile.

Installation Notes

Install with a flat-blade screwdriver sized to the slot width to avoid cam-out or slot damage. Ensure the mating hole is properly countersunk to the correct angle before driving to achieve a flush seating surface. Do not overtighten, as Grade 2 steel has lower tensile strength than higher-grade fasteners. Follow applicable mechanical or electrical codes when using fasteners in equipment enclosures or structural assemblies.