Value Collection MPPI0-400310-100BX 4-40 Pan Head Screw

Product Description

The VALUE COLLECTION MPPI0-400310-100BX is a 4-40 UNC machine screw designed for precision fastening in light-duty mechanical and electrical assemblies. It features a pan head profile with a Phillips drive and is manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance. The screw measures 5/16 inches in length under the head, making it well suited for securing panels, enclosures, and small components where a low-profile head is required. This box contains 100 pieces, packaged for job-site or shop use. Installation is straightforward with a standard Phillips screwdriver or bit driver.

This fastener is commonly used in HVAC equipment panels, electrical enclosures, control board mounting, and light-duty sheet metal or plastic assemblies. The 4-40 thread size is a standard coarse-thread UNC designation used widely in instrumentation, small appliances, and commercial equipment. Tradespeople and technicians working on control panels, junction boxes, or equipment covers will find this screw a standard replacement or stocking item. The pan head sits flush against flat surfaces without requiring a countersink, keeping installation quick and clean.

Key Features

• 4-40 UNC thread size — standard coarse thread for small fastener applications
• Pan head profile — low profile, no countersink required
• Phillips drive — compatible with standard Phillips screwdrivers and bit drivers
• Grade 2 steel construction — adequate strength for light-duty mechanical assemblies
• Zinc-plated finish — provides basic corrosion resistance in indoor environments
• 5/16-inch length under head — suits thin panel and enclosure fastening
• Box of 100 — stocking quantity for shop or field use

Compatibility

Designed as a standard 4-40 UNC pan head machine screw suitable for general-purpose use in electrical enclosures, HVAC control panels, instrumentation housings, and light mechanical assemblies requiring a Phillips-drive fastener without a washer.

Installation Notes

Install using a Phillips screwdriver or bit driver sized to the fastener. De-energize any electrical equipment before accessing panels or enclosures where these screws are used. Do not overtighten into plastic or thin sheet metal substrates, as the fine thread engagement area is limited at this screw size. Follow applicable NEC or equipment manufacturer guidelines when fastening control board or enclosure hardware.