4-40 X 7/16″ Machine Screws Undercut Flat Head Phillips Drive 18/8 Stainless Steel Black Oxide (7000/Pkg.) Express Delivery

Machine Screws Phil Undercut Flat 18/8 Stainless Black Oxide 4-40 x 7/16 are precision fasteners designed for reliable, corrosion-resistant joining in metal assemblies. With a flat head and Phillips drive, these screws provide a clean, flush finish in enclosures, panels, and machinery.

Key specifications

Thread size: 4-40

Length: 7/16 in

Head style: Phil Undercut Flat

Drive type: Phillips

Material: 18/8 stainless steel

Finish: Black oxide

Why choose these screws

Manufactured from 18/8 stainless steel for dependable corrosion resistance and strength in a variety of environments. The black oxide finish provides a low-gloss appearance that blends with dark hardware, while maintaining the performance of stainless steel in typical indoor applications.

Applications

Enclosures, control panels, and electrical housings

Machinery assemblies and equipment panels

Any project requiring a flush, low-profile screw with a Phillips drive

Installation and care

Use a compatible Phillips screwdriver for even seating and to prevent head stripping.

Ensure you have a correctly tapped or pre-drilled 4-40 threaded hole for proper engagement.

Wipe with a dry cloth after use to remove oils; avoid prolonged exposure to moisture beyond normal indoor use to preserve the finish.