4 X 5/16″ Type AB Self Tapping Sheet Metal Screws Flat Head Phillips Drive Steel Black Oxide (10000/Pkg.) Seasonal Sale

Type AB Self-tapping Sheet Metal Screws with Flat Head and Phillips Drive provide reliable fastening for sheet metal assemblies. This bulk pack comprises 10,000 screws with diameter #4 and length 5/16 inch, manufactured from Steel and finished with Black Oxide for corrosion resistance.

Specs

Dimensions:

Diameter: #4

Length: 5/16 inch

Finish: Black Oxide

Drive type: Phillips

Thread type: Type AB

Head style: Flat

Features

Self-tapping design: Taps its own threads in sheet metal, eliminating pilot holes and reducing assembly steps on production lines.

Flat head: Countersunk profile enables flush seating on panels, minimizing snag risk in assembled cabinets, enclosures, and dashboards.

Phillips drive: Broad driver compatibility with common power tools and hand drivers, promoting reliable engagement and minimizing cam-out.

Type AB thread: Thread geometry optimized for sheet metal substrates, delivering solid pull-through resistance and secure fastening without pre-threading.

Finish: Black Oxide coating provides moderate corrosion resistance for indoor environments and reduces glare on visible hardware.

Packaging: Bulk pack containing 10,000 pieces, suitable for high-volume manufacturing, maintenance, and contractor projects.

Ideal applications: Electrical enclosures, metal cabinets, HVAC duct assemblies, automotive interior panels, and other thin to medium gauge sheet metal fastening scenarios.

Quality and usage tips: Use with compatible substrate thickness; avoid over-torquing to prevent sheet metal pull-through; pair with appropriate driver bits for consistent seating and torque control.