Value Collection 3tsmpp04c006 4-40 X 3/8 in Pan Head Phillips Screw

Product Description

The VALUE COLLECTION 3tsmpp04c006 is a 4-40 UNC machine screw with a pan head and Phillips drive, manufactured from Grade 316 stainless steel with a bright uncoated finish. The 4-40 thread designation indicates a #4 major diameter with 40 threads per inch, and the length under head measures 3/8 inches. Grade 316 stainless steel provides strong resistance to corrosion and oxidation, making this fastener well suited for environments where moisture, chemicals, or salt exposure are concerns. Installers across HVAC, electrical, plumbing, and light mechanical trades use this type of screw when a corrosion-resistant, small-diameter fastener is required for panel, bracket, or component attachment.

This screw is used in residential and light commercial applications where a small-diameter machine screw with corrosion resistance is needed. Typical scenarios include securing electrical junction box covers, control board mounting brackets, panel trim, and instrumentation hardware. The Phillips pan head provides a low-profile bearing surface and is compatible with standard Phillips screwdrivers and power bits. The bright uncoated finish maintains dimensional accuracy and suits applications where coating thickness could affect thread fit.

Key Features

• 4-40 UNC thread form with 40 threads per inch for reliable engagement in tapped holes
• Pan head profile provides a wide, low-profile bearing surface without a countersunk recess
• Phillips drive compatible with standard No. 1 Phillips bits and screwdrivers
• Grade 316 stainless steel construction for elevated corrosion and chemical resistance
• Bright uncoated finish maintains precise thread dimensions
• No-washer style for clean, direct seating against the work surface

Compatibility

Designed as a standard 4-40 UNC machine screw suitable for any tapped or pre-threaded hole conforming to the 4-40 Unified National Coarse thread standard in inch-measurement applications.

Installation Notes

Install using a No. 1 Phillips screwdriver or matching power bit to avoid cam-out on the small drive recess. Ensure the mating hole is tapped to 4-40 UNC specification before driving to prevent cross-threading. De-energize any electrical equipment and follow applicable NEC guidelines before fastening components inside live panels or enclosures. Do not overtighten small-diameter stainless screws, as the material is susceptible to galling when torque is applied without lubrication.