Value Collection 583679PR 1/4-20 X 3in Round Head Slotted Machine

Product Description

The VALUE COLLECTION 583679PR is a 1/4-20 UNC machine screw with a round head and slotted drive, designed for general industrial and mechanical fastening applications. It measures 3 inches in length under the head and is manufactured from alloy steel with a zinc finish for basic corrosion resistance. This screw follows the inch measurement system and uses Unified National Coarse thread form, making it a standard fastener found in maintenance, equipment assembly, and fabrication work. Licensed tradespeople, maintenance technicians, and assembly workers typically stock this fastener for panel attachment, bracket mounting, and structural sub-assembly tasks.

This machine screw is suited for use in light to medium-duty fastening applications where a standard coarse-thread zinc-plated fastener is required. The round head profile sits above the work surface, providing a broad bearing area without countersinking. The slotted drive accepts a flat-blade screwdriver, making it accessible in the field with basic hand tools. It is commonly installed in HVAC equipment enclosures, electrical panel brackets, plumbing support hardware, and general mechanical assemblies.

Key Features

• 1/4-20 UNC thread for broad compatibility with standard tapped holes and hex nuts
• 3-inch length under head for applications requiring deeper thread engagement or fastening through thicker materials
• Round head profile provides a low-profile, finished appearance above the work surface
• Slotted drive works with standard flat-blade screwdrivers and bit drivers
• Alloy steel construction with zinc finish for strength and basic corrosion protection
• No washer — installs directly against the mating surface

Compatibility

Designed as an OEM-style replacement or stock fastener for any application requiring a 1/4-20 UNC round head slotted machine screw with a 3-inch length under head in inch-system hardware.

Installation Notes

Installation is performed with a standard flat-blade screwdriver or slotted bit driver sized for a 1/4-inch head. Always power down or de-energize equipment before fastening into or around electrical enclosures. Ensure the mating tapped hole or nut is clean and free of debris before driving. Follow applicable mechanical codes and equipment manufacturer guidelines for torque and fastener placement.