Value Collection 580671PR 1/4-20 X 2.5 in Flat Head Screw

Product Description

The VALUE COLLECTION 580671PR is a 1/4-20 flat head slotted machine screw with a 2.5-inch overall length, manufactured from steel with a zinc finish and rated to Grade 2 standards. The flat head profile sits flush with the mating surface when fully driven, making it a common choice in panels, brackets, and enclosures where a low-profile fastener is required. The UNC (Unified National Coarse) thread form engages quickly and is widely compatible with standard tapped holes. This screw is sized without a washer and is measured overall, meaning the 2.5-inch dimension includes the head. Installation is handled by general contractors, maintenance technicians, electricians, and HVAC service professionals alike.

This fastener is suited for light-duty to medium-duty mechanical assemblies in residential and commercial applications. Typical uses include securing electrical enclosure panels, mounting brackets, HVAC cabinet components, and general sheet metal or structural assembly work where a coarse-thread zinc-plated steel screw meets the load and corrosion-resistance requirements. The slotted drive accepts a standard flat-blade screwdriver or bit. These screws are sold as a minimum order quantity of 100 pieces per order.

Key Features

• 1/4-20 UNC coarse thread for fast engagement with standard tapped holes
• Flat head profile seats flush with the work surface when countersunk
• Slotted drive compatible with standard flat-blade screwdrivers and bits
• Zinc finish provides basic corrosion resistance for indoor and sheltered applications
• Grade 2 steel construction suitable for general-purpose light-to-medium duty fastening
• No washer style — clean, compact install without additional hardware

Compatibility

Designed as a general-purpose 1/4-20 UNC machine screw for use in any application requiring a flat head slotted fastener with a 2.5-inch overall length in a standard coarse-thread tapped hole or with a matching nut.

Installation Notes

Use a properly sized flat-blade screwdriver or bit to avoid cam-out and head damage. For flush seating, ensure the mating surface is countersunk to match the flat head angle before driving. De-energize any electrical equipment and follow applicable NEC or equipment-manufacturer lockout procedures before inserting fasteners into live panels or enclosures. Do not exceed the torque capacity appropriate for Grade 2 steel at this thread size.