Value Collection 580687PR 1/4-20 X 4 in Flat Head Slotted Screw

Product Description

The VALUE COLLECTION 580687PR is a 1/4-20 unified coarse thread (UNC) machine screw with a flat head and slotted drive, manufactured from Grade 2 steel with a zinc finish. The overall length is 4 inches, with the full 4 inches measured as the length under the head, consistent with flat head countersunk fastener standards. The zinc finish provides basic corrosion resistance for indoor and light-duty applications. This screw is a standard inch-series fastener used by electricians, HVAC technicians, plumbers, and general maintenance professionals for panel assembly, equipment mounting, and fixture installation.

This fastener is suited for light to medium-duty mechanical assembly in residential and commercial applications. It is typically used to fasten metal components, enclosures, brackets, and fixtures where a flush countersunk profile is required. The slotted drive accepts a standard flat-blade screwdriver. Grade 2 steel is appropriate for general-purpose fastening where high tensile strength is not a critical requirement. Sold individually per package, with a minimum order quantity of 100 pieces.

Key Features

• 1/4-20 UNC thread for compatibility with standard inch-series tapped holes
• Flat head profile allows flush or countersunk installation in mating surfaces
• Slotted drive works with standard flat-blade screwdrivers
• Grade 2 steel construction provides adequate strength for general-purpose use
• Zinc finish offers basic corrosion protection for indoor environments
• 4-inch overall length with full thread length under the head

Compatibility

Designed as a standard inch-series machine screw for use in any application with a 1/4-20 UNC tapped hole requiring a flat head countersunk fastener.

Installation Notes

Installation is performed by threading into a pre-tapped or tapped-and-clearance hole using a flat-blade screwdriver of appropriate tip width. Ensure the mating material is pre-drilled and countersunk to the correct angle to allow proper flat head seating. Do not overtighten, as Grade 2 steel has lower shear and tensile ratings than higher-grade fasteners. Verify thread engagement depth meets the requirements of the application before final torque.