Value Collection R63062924 Machine Screw 4-40 X 3/8 in Flat Head

Product Description

The VALUE COLLECTION R63062924 is a 4-40 UNC machine screw designed for precision fastening in light-duty mechanical assemblies. Manufactured from 18-8 stainless steel with a bright, uncoated finish, this screw offers solid corrosion resistance in both indoor and moderate outdoor environments. The flat head profile sits flush with or below the mating surface when countersunk, making it a standard choice where a clean, low-profile fastening point is required. Overall length is 3/8 inches, with 3/8 inches measured under the head. The slotted drive accepts a standard flat-blade screwdriver. Sold in a minimum order quantity of 100 pieces per order.

This fastener is suited for use in electrical enclosures, electronic assemblies, light sheet metal work, plastic housings, and general mechanical fabrication. The 4-40 thread size is one of the most common small-diameter imperial thread patterns, making these screws a frequent choice for instrument panels, control boards, and precision equipment where a compact fastening point is needed. Electricians, HVAC technicians, and mechanical assemblers commonly use 4-40 hardware when working with terminal strips, cover panels, and chassis components.

Key Features

• 4-40 UNC thread for broad compatibility with standard 4-40 tapped holes and nuts
• 18-8 stainless steel construction provides corrosion resistance without plating
• Flat head design sits flush when installed in a properly countersunk hole
• Slotted drive works with standard flat-blade screwdrivers and bit drivers
• Bright uncoated finish maintains dimensional accuracy and thread integrity
• Overall and under-head length both measure 3/8 inches for consistent fitment

Compatibility

Designed for use in any application requiring a 4-40 UNC threaded flat-head fastener with a slotted drive, including electrical enclosures, electronic assemblies, and light mechanical fabrication.

Installation Notes

Installation is performed by hand or with a flat-blade screwdriver or bit driver sized for the slotted drive. A properly sized 4-40 countersink should be prepared in the mating material before installation to allow the flat head to seat flush. De-energize any electrical equipment fully before installing or removing fasteners on live panels or enclosures. Avoid over-torquing small-diameter screws into plastic or thin sheet metal to prevent thread stripping.