Value Collection R63060321 5/16-18 X 2 in Flat Head Slotted Screw

Product Description

The VALUE COLLECTION R63060321 is a 5/16-18 x 2-inch flat head slotted machine screw manufactured from 18-8 stainless steel with a bright, uncoated finish. It follows Unified National Coarse (UNC) thread standards and measures 2 inches in overall length. The flat head profile sits flush with or below the mating surface, making it a practical choice wherever a low-profile fastener is required. The slotted drive accepts a standard flat-blade screwdriver. Installers in HVAC, plumbing, electrical, and general mechanical trades use this screw type for panel assembly, equipment mounting, and structural fastening applications where corrosion resistance is a priority.

This screw is suited for both indoor and outdoor applications where exposure to moisture, mild chemicals, or corrosive environments makes stainless steel preferable to plain steel or zinc-plated fasteners. The 18-8 stainless steel grade offers a reliable balance of corrosion resistance and mechanical strength. Common install scenarios include equipment enclosures, junction boxes, structural brackets, and mechanical assemblies across residential, commercial, and light industrial settings. The UNC thread form is widely compatible with standard tapped holes and nuts in that thread size.

Key Features

• 5/16-18 UNC thread form for use with standard tapped holes and hex nuts
• 2-inch overall length with full 2-inch length under head
• Flat head profile allows flush or countersunk installation
• Slotted drive for use with standard flat-blade screwdrivers
• 18-8 stainless steel construction resists corrosion in wet or chemically active environments
• Bright, uncoated finish — no plating to flake or interfere with electrical continuity

Compatibility

Designed as an OEM-style replacement or general-use fastener for applications requiring a 5/16-18 UNC flat head slotted machine screw in stainless steel.

Installation Notes

Installation is performed by any trade using standard hand tools — a flat-blade screwdriver sized for the slotted drive is required. For countersunk applications, ensure the receiving material is drilled and countersunk to the correct angle to seat the flat head flush. Apply appropriate thread-locking compound or anti-seize if the assembly is subject to vibration or thermal cycling. Always verify the tapped hole or nut thread class is compatible with the 5/16-18 UNC specification before installation.