Value Collection W98252PS 4-40 X 5/16 Pan Head Phillips Screw

Product Description

The VALUE COLLECTION W98252PS is a 4-40 x 5/16 inch pan head machine screw with a Phillips drive, manufactured from 18-8 stainless steel and conforming to ASME B18.13. The 4-40 thread designation indicates a number 4 diameter with 40 threads per inch, making this a fine-pitch fastener suited to light assemblies where secure, precise threading is required. Length is measured under the head at 5/16 inch. The 18-8 stainless steel construction provides corrosion resistance appropriate for indoor and moderate outdoor applications. This screw is sold in quantities of 100 and is installed by maintenance technicians, electricians, HVAC service professionals, and general tradespeople working with small-gauge threaded assemblies.

This fastener is used in applications requiring a low-profile pan head and Phillips recess for assembly or panel work. Typical install scenarios include electronic enclosures, control boards, sheet metal subassemblies, and light-duty equipment housings where a 4-40 thread is specified. The external tooth washer style noted in the specification provides added resistance to loosening under vibration when used with a compatible washer. Suitable for residential and light commercial trade work where corrosion resistance and dimensional consistency are required.

Key Features

• 4-40 thread size with 40 threads per inch for fine-pitch engagement
• Pan head profile with Phillips drive for flush, low-profile installation
• 18-8 stainless steel construction for corrosion resistance
• Length under head: 5/16 inch per ASME B18.13 standard
• External tooth washer style for vibration resistance when used with matching washer
• Conforms to ASME B18.13 dimensional standard

Compatibility

Designed as a standard 4-40 x 5/16 inch pan head Phillips machine screw for use in any application specifying an ASME B18.13 inch-series fastener of this thread size and length.

Installation Notes

Install using a Phillips head screwdriver or bit sized for a number 4 screw to avoid cam-out and fastener damage. Ensure the mating threaded hole or nut is clean and free of debris before driving. Do not overtighten in thin sheet metal or plastic-threaded inserts, as the fine 4-40 thread is susceptible to stripping under excessive torque. Power down any electrical equipment before accessing panels or enclosures where this fastener is used.