Top Pick 1/4″-20 X 4-1/2″ Machine Screws Flat Head Phillips Drive 18/8 Stainless Steel Black Oxide (200/Pkg.)

Securely fasten metal parts with precision using our Machine Screws Phil Flat 18/8 Stainless Black Oxide 1/4-20 x 4 1/2. This high-performance screw combines durable 18/8 stainless steel with a low-glare black oxide finish and a Phillips drive for reliable assembly in a variety of environments.

Key features

Material: 18/8 stainless steel (304) for excellent corrosion resistance and strength.

Finish: Black oxide coating provides a discreet, anti-glare appearance and added corrosion protection in indoor use.

Head type: Flat head for flush mounting in countersunk holes.

Drive: Phillips (PH) drive for smooth, reliable tightening.

Thread size: 1/4″-20 UNC standard coarse thread for common fastener acceptance.

Length: 4-1/2 inches to suit medium-depth assemblies.

Applications

Ideal for metal fabrication, equipment enclosures, automotive, furniture, and general machinery where a clean, low-profile fastener is required. The stainless steel construction resists moisture, making it suitable for indoor environments and certain outdoor applications where corrosion resistance matters.

Why choose this screw

Combining high-quality 18/8 stainless with a durable black oxide finish, these Phillips flat head machine screws deliver reliable performance, ease of installation, and a professional look in finished assemblies.

Note: Always verify thread compatibility and material suitability for your specific application and environment.