Value Collection 2-PFM-31C-50 Machine Screw 5/16-18

Product Description

The VALUE COLLECTION 2-PFM-31C-50 is a 5/16-18 x 1/2 inch flat head Phillips machine screw manufactured from Grade 316 stainless steel with a bright, uncoated finish. The flat head profile sits flush with the mating surface when fully driven, making it well-suited for applications where a low-profile fastener is required. Grade 316 stainless steel provides strong resistance to corrosion and oxidation, including in chlorine-bearing and marine environments. This screw is installed using a standard Phillips driver or bit and is appropriate for mechanical assembly, equipment mounting, and general trade fastening tasks across HVAC, plumbing, electrical, and pool service applications.

This screw is used in light to medium-duty fastening applications where flush seating and corrosion resistance are priorities. The 5/16-18 thread designation indicates a Unified National Coarse thread form, which engages quickly and holds reliably in metal and plastic substrates. The 1/2 inch length under head suits thinner panel and bracket assemblies. Technicians across plumbing, pool equipment service, and HVAC will find this fastener appropriate for stainless-compatible assemblies, enclosures, and equipment panels exposed to moisture or chemicals.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in wet and chemical environments
• Flat head profile allows flush seating with the mating surface
• Phillips drive type accepts standard Phillips bits and screwdrivers
• 5/16-18 Unified National Coarse thread for fast engagement and reliable hold
• Bright, uncoated finish — no plating to chip, flake, or introduce contamination
• Inch measurement system for compatibility with standard US trade tooling and hardware

Compatibility

Designed as a general-purpose machine screw for use in any application requiring a 5/16-18 thread, 1/2 inch length, flat head, Phillips drive fastener in Grade 316 stainless steel.

Installation Notes

Install using a Phillips screwdriver or Phillips bit rated for the fastener size. Always verify that the receiving thread is clean and properly formed before driving to avoid cross-threading. Power down or de-energize any equipment before replacing fasteners on live assemblies. Minimum order quantity for this item is 5 pieces.