Value Collection 580719PR 5/16-18 X 5/8 in Flat Head Machine Screw

Product Description

The VALUE COLLECTION 580719PR is a flat head slotted machine screw designed for general fastening applications across mechanical, electrical, and structural assemblies. Sized at 5/16-18 thread with a 5/8 inch overall length, this screw features a unified national coarse (UNC) thread form and 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 suitable for applications where a low-profile or countersunk installation is required. Sold in a minimum order quantity of 100 pieces, this screw is appropriate for production, maintenance, and service environments where consistent fastener availability is essential.

This machine screw is used in a wide range of trade and industrial applications including HVAC equipment assembly, electrical panel work, plumbing fixture mounting, and general mechanical maintenance. The slotted drive accepts a standard flat-blade screwdriver, making it accessible in field service conditions without specialized tooling. The zinc coating provides a moderate level of protection suitable for dry indoor environments. This size is commonly encountered in light structural, sheet metal, and equipment enclosure applications across residential and light commercial installations.

Key Features

• 5/16-18 UNC thread for positive engagement in standard tapped holes
• 5/8 inch overall length with full threading under the head
• Flat head profile seats flush in countersunk applications
• Slotted drive compatible with standard flat-blade screwdrivers
• Grade 2 steel construction with zinc finish for basic corrosion resistance
• Sold in 100-piece increments for maintenance and production use

Compatibility

Designed as a general-purpose replacement or service fastener for any application requiring a 5/16-18 UNC flat head slotted machine screw with a 5/8 inch overall length.

Installation Notes

Installation is performed by hand or with a standard flat-blade screwdriver into a pre-tapped or threaded insert hole sized for 5/16-18 UNC thread. Verify that the mating material is countersunk to the correct angle to fully seat the flat head flush with the surface. Do not overtighten, as Grade 2 fasteners have lower tensile strength than higher-grade alternatives and are not intended for high-torque structural joints. Follow applicable mechanical and electrical codes when using fasteners in equipment enclosures or load-bearing assemblies.