Value Collection R52001143 5/16-18 X 2.5 in Pan Head Screw

Product Description

The VALUE COLLECTION R52001143 is a 5/16-18 x 2.5 inches pan head machine screw designed for general mechanical fastening applications. It features a Phillips drive and is manufactured from steel with a zinc-plated finish for basic corrosion resistance. The thread size follows the unified coarse (UNC) standard at 5/16-18, meaning 5/16 inches in diameter with 18 threads per inch. The 2.5-inch measurement is taken under the head, per ASME B18.6.3 and SAE J82 specifications. This screw is installed by HVAC technicians, electricians, plumbers, and general maintenance trades wherever a standard inch-system machine screw is required.

This fastener is suited for light-to-medium duty mechanical assemblies in residential and commercial applications. Its pan head profile provides a low-profile bearing surface with a large contact area, making it a common choice for sheet metal enclosures, equipment panels, brackets, and structural hardware. The Phillips drive is compatible with standard #3 Phillips bits and drivers widely used across trades.

Key Features

• 5/16-18 UNC thread form for broad hardware compatibility
• 2.5-inch length measured under the head per ASME B18.6.3
• Pan head with Phillips drive for standard tool access
• Steel construction with zinc-plated finish for basic corrosion resistance
• Grade J82 per SAE J82 and ASME B18.6.3 standards
• No washer — clean seating directly against the workpiece

Compatibility

Designed as a standard inch-system machine screw suitable for use wherever a 5/16-18 x 2.5-inch pan head Phillips fastener is specified. Minimum order quantity is 10 units.

Installation Notes

Install using a #3 Phillips screwdriver or bit driver. Ensure the mating thread (tapped hole or nut) matches the 5/16-18 UNC specification before installation. De-energize and lock out any equipment before performing fastener work on electrical enclosures or mechanical panels. Do not overtighten — follow the torque specification provided by the equipment manufacturer for the application.