Popular 1/4″-20 X 3/8″ Machine Screws Flat Head Phillips Drive Steel Black Zinc (6000/Pkg.)

Machine Screws Phil Flat Steel Black Zinc 1/4-20 X 3/8 are engineered for secure, high-precision fastening in metal assemblies. Featuring a durable steel body and a black zinc finish, these screws resist corrosion while delivering reliable strength for a variety of applications.

Whether you’re assembling machinery, automotive components, electrical enclosures, or sheet metal projects, these machine screws provide a consistent 1/4-20 UNC thread with a compact 3/8″ length for a clean, low-profile install.

Key features

Material: Steel

Finish: Black zinc (corrosion resistant)

Thread size: 1/4-20 UNC

Length: 3/8 inch

Head style: Flat

These machine screws offer dependable strength and a clean, professional finish for a wide range of projects where a standard 1/4-20 thread is required.