5/16 X 3″ Type A Self Tapping Sheet Metal Screws Hex Washer Head Unslotted Drive Steel Zinc & Bake 7/16″ A/F (400/Pkg.) Next Day Delivery

Type A Self Tapping Sheet Metal Screws with hex washer head and unslotted drive provide rapid, secure fastening for sheet metal assemblies. They are made from steel with a zinc baked finish, delivering durable corrosion resistance in OEM manufacturing and maintenance tasks.

Specs

Diameter: 5/16 inch

Length: 3 inch

Head type: Hex Washer Head

Across flats: 7/16 inch

Drive type: Unslotted

Finish: Zinc baked finish

Material: Steel

Thread type: Self tapping (Type A)

Features

Self tapping design: Directly forms threads in sheet metal, eliminating pre-drilling in compatible thicknesses and enabling rapid installation.

Hex Washer Head: Provides load distribution over a washer surface and a flush seating profile, improving seating integrity and sealing against moisture in protected environments.

Unslotted drive: Requires a hex driver, reducing tool damage and offering a more compact, tamper-resistant fastening option in certain assemblies.

Finish: Zinc baked coating delivers enhanced corrosion resistance for longevity in indoor and semi-exposed applications.

Package quantity: 400 per package, suitable for bulk OEM procurement and consistent supply on high-volume production lines.

Ideal applications: Sheet metal enclosures, electrical and HVAC housings, automotive interior panels, and light to medium gauge metal assemblies.

Benefits over alternatives: Reduces installation steps by eliminating pilot holes, provides secure seating with a built-in washer, and delivers durable, corrosion-resistant performance in a single fastener.