Value Collection R63068366 4-40 X 1/8 in Pan Head Screw

Product Description

The VALUE COLLECTION R63068366 is a 4-40 UNC machine screw designed for light-duty fastening applications across mechanical assemblies, electrical enclosures, and instrument panels. The pan head profile provides a low-profile, broad bearing surface that distributes clamping load evenly without requiring a countersunk hole. The slotted drive accommodates a standard flat-blade screwdriver, making installation straightforward in tight spaces. Manufactured from grade 18-8 stainless steel with a bright, uncoated finish, this screw delivers reliable corrosion resistance in both indoor and mildly corrosive environments. At 1/8 inch length under head, it is suited to thin-material fastening where thread engagement depth is limited.

This screw is commonly used in residential and light commercial applications wherever a 4-40 threaded fastener is specified. Typical use cases include securing control boards, terminal blocks, junction box covers, instrument housings, and small mechanical subassemblies. Electricians, HVAC technicians, and mechanical assemblers regularly stock 4-40 pan head screws for panel work and equipment servicing. The bright uncoated finish is appropriate for indoor environments or applications where the base material's corrosion resistance is sufficient without an additional plating layer.

Key Features

• 4-40 UNC thread size for compatibility with standard 4-40 tapped holes and nuts
• Pan head profile offers a broad, flat bearing surface without countersinking
• Slotted drive accepts standard flat-blade screwdrivers
• Grade 18-8 stainless steel construction provides corrosion resistance in non-aggressive environments
• Bright, uncoated finish — no additional plating or coating to add dimensional variation
• 1/8 inch length under head suits thin-material and shallow-depth fastening needs

Compatibility

Designed as a standard inch-series machine screw for use in any application requiring a 4-40 UNC thread, pan head style, and slotted drive in a 1/8-inch length under head.

Installation Notes

Install using a properly sized flat-blade screwdriver that fully seats in the slot to prevent cam-out and head damage. De-energize any electrical panel or control board fully before driving or removing fasteners in live equipment. Apply only hand-tool torque appropriate for a number 4 screw to avoid stripping the threads or the drive slot. When fastening into tapped aluminum or plastic, use care not to overtighten, as the stainless steel screw is significantly harder than those substrates.