Value Collection 591679PS 1/4-20 X 3 Pan Head Slotted Screw

Product Description

The VALUE COLLECTION 591679PS is a 1/4-20 threaded machine screw with a pan head and slotted drive, manufactured from steel with a zinc finish. It measures 3 inches in length, measured under the head, and is built to ASME B18.6.3 and SAE J82 standards. The zinc coating provides basic corrosion resistance for general-purpose indoor and light-duty applications. This fastener is sized and threaded for use in standard inch-measurement assemblies and is a common choice in mechanical, HVAC panel, and electrical enclosure work where a flat-seated pan head is required.

This machine screw is suited for general mechanical assembly, equipment panels, junction boxes, HVAC cabinet work, and light structural fastening applications. The 1/4-20 thread is one of the most widely used coarse-thread sizes in inch-system hardware, making this screw interchangeable with a broad range of standard tapped holes and hex nuts. The pan head profile provides a low-profile, wide-bearing surface that works well in sheet metal and fabricated steel assemblies without a washer.

Key Features

• 1/4-20 UNC coarse thread for broad compatibility with standard inch-system tapped components
• 3-inch length measured under the head per ASME B18.6.3
• Pan head with slotted drive for use with standard flat-blade screwdrivers
• Steel construction with zinc finish for basic corrosion protection
• Meets ASME B18.6.3 and SAE J82 material and dimensional standards
• No washer required due to pan head bearing surface geometry

Compatibility

Designed as a standard inch-system machine screw for use in any application requiring a 1/4-20 threaded fastener with a pan head profile and slotted drive.

Installation Notes

Install with a properly fitting flat-blade screwdriver to avoid cam-out and drive damage. Ensure the mating tapped hole or nut is rated for 1/4-20 UNC thread engagement before installation. De-energize and lock out any electrical or mechanical equipment before fastening or removing screws on live panels or enclosures. Do not overtighten in thin sheet metal applications, as the zinc finish provides no thread-locking function.