Value Collection R52001123 5/16-18 Unc Machine Screw

Product Description

The VALUE COLLECTION R52001123 is a flat head Phillips drive machine screw designed for general-purpose fastening applications. It features a 5/16-18 UNC thread form and a 1 inch overall length. The screw is manufactured from Grade J82 steel with a zinc-plated finish that provides basic corrosion resistance in dry indoor environments. The flat head profile sits flush with or below the surface of the mating material when properly countersunk. This fastener is installed by maintenance technicians, field service crews, and tradespeople across HVAC, electrical, and mechanical assembly work.

This screw suits light to medium-duty fastening tasks where a flush-mount head is required. Common applications include panel assembly, equipment enclosures, junction boxes, and mechanical brackets. The 5/16-18 UNC coarse thread engages quickly and holds reliably in steel and aluminum through-holes or tapped bores. It is sold individually but requires a minimum order quantity of 50 pieces per purchase.

Key Features

• 5/16-18 UNC coarse thread for fast engagement in tapped holes or with a standard hex nut
• Flat head profile countersinks flush with the work surface
• Phillips drive compatible with standard No. 2 Phillips bit or screwdriver
• Grade J82 steel construction for reliable tensile strength in general fastening
• Zinc-plated finish provides basic corrosion protection in dry indoor service environments
• No washer included; install with a separate flat or lock washer if the application requires one

Compatibility

Designed as a general-purpose replacement or stock fastener for equipment panels, enclosures, and mechanical assemblies that use 5/16-18 UNC flat head machine screws with a 1 inch overall length.

Installation Notes

Installation requires a properly sized countersunk hole to allow the flat head to sit flush. Use a No. 2 Phillips bit in a hand driver or powered screwdriver set to a controlled clutch setting to avoid cam-out or overdriving. Torque to the value specified by the equipment manufacturer or assembly drawing. Ensure the mating thread or nut is clean and free of debris before driving.