Premium 5/16 X 3″ Type A Self Tapping Sheet Metal Screws Hex Washer Head Unslotted Drive 18/8 Stainless Steel (200/Pkg.)

200 pack of Type A Self Tapping Sheet Metal Screws with Hex Washer Head and unslotted drive delivers fast, reliable fastening for professional sheet metal assemblies. Manufactured from 18/8 stainless steel, these screws offer robust corrosion resistance and repeatable torque in light to moderate gauge metal applications.

Specs

Dimensions: 5/16 inch diameter x 3 inch length

Drive type: Unslotted hex drive (Hex Washer Head)

Material grade: 18/8 Stainless Steel (304)

Thread type: Self tapping

Features

Self tapping efficiency: Forms its own mating threads within sheet metal during installation, enabling fast, reliable fastening without pre-drilling for standard gauge panels.

Corrosion resistance: 18/8 stainless steel provides robust resistance to rust and staining across indoor and outdoor environments, including oxidation-prone atmospheres.

Head design: Hex Washer Head distributes clamp load over a large bearing surface and creates a flush seating profile to reduce snag hazards.

Drive compatibility: Unslotted drive requires a hex driver or socket, offering higher torque transfer and reduced cam-out compared to slotted drives.

Applications: Particularly well suited for electrical enclosures, HVAC equipment, automotive panels, and general sheet metal assemblies where fast, reliable fastening is required.