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

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.