Value Collection R83924894 Machine Screw 5/16-18 X 1-1/4 in

Product Description

The VALUE COLLECTION R83924894 is a 5/16-18 UNC machine screw with a round head and slotted drive, manufactured from 18-8 stainless steel with a bright, uncoated finish. At 1-1/4 inches in length measured under the head, this fastener delivers solid corrosion resistance and is suited for general mechanical assembly, equipment maintenance, and fabrication tasks. The 18-8 stainless grade provides reliable performance in wet or mildly corrosive environments without requiring additional coating. Tradespeople and maintenance technicians reach for this fastener type in panel assembly, fixture mounting, and equipment enclosure work where rust resistance and a clean appearance are both required.

This screw is appropriate for use in HVAC equipment panels, electrical enclosures, plumbing fixture mounting, and general mechanical assemblies where a standard UNC thread form is specified. The round head profile sits above the surface and distributes clamping load across a broad bearing area, making it a practical choice for sheet metal, structural members, and equipment housings. No washer is included or required by design, as the fastener is intended for direct installation into threaded holes or with a standard hex nut.

Key Features

• 5/16-18 UNC thread for compatibility with standard inch-series tapped holes and nuts
• 18-8 stainless steel construction provides corrosion resistance in damp or outdoor-exposed installations
• Round head profile distributes load and sits flush-proud above the mating surface
• Slotted drive accommodates standard flathead screwdrivers for installation and removal
• Bright, uncoated finish maintains dimensional accuracy for consistent thread engagement
• Length under head measured at 1-1/4 inches for precise fitment in standard assemblies

Compatibility

Designed as a standard UNC-thread machine screw suitable for use in any application requiring a 5/16-18 inch-series fastener with a round slotted head and 18-8 stainless steel material.

Installation Notes

Installation is performed with a standard flathead screwdriver sized to the slotted head. Confirm the receiving hole is tapped to 5/16-18 UNC or that a matching nut is used. Avoid overtightening stainless steel fasteners, as galling can occur in threaded joints; applying an anti-seize compound to the threads is a common field practice. Power down or de-energize any equipment before fastener work on live panels or enclosures.