Sowester Countersunk Head A4 Self Tapper Screws DIN7982 - Various Sizes

Sowester countersunk self-tapper A4 screws in a selection of sizes and pack options.

A4 stainless-steel (marine-grade) countersunk-head, Pozi-drive self-tapping screw — designed to cut its own thread in wood, plastics, or sheet materials, while providing a flush-fit head finish. The stainless A4 makes these screws suitable for corrosive, outdoor, or marine environments. The range covers multiple lengths and thicknesses giving flexibility for many fastening jobs.

Features

• Material: A4 stainless steel (316 grade) - marine-grade, corrosion-resistant
• Head type: Countersunk (flat / flush) - sits flush with the surface once installed, for a neat finish and no protrusion
• Drive type: Pozi (Pozidrive cross-recess) - good torque transfer, reduced slippage when driving screws
• Self-tapping thread (Type AB / Type C, where applicable) - the screw cuts its own thread into substrate: no need for a pre-tapped nut, useful for sheet metal, plastics, wood, composites
• Suitable for varied materials: wood (softwood/hardwood - pre-drill recommended for hardwood), plastics, sheet materials, thin metal or composites, depending on thickness & gauge
• Marine/outdoor suitability: Because of A4 stainless steel and corrosion resistance, ideal for boats, coastal/cold-marine use, exterior works, or humid/corrosive environments
• Range of sizes available: supports a wide size spectrum - giving flexibility to choose according to project needs

Specifications

• Standard: DIN 7982 / DIN 7982-CZ Self-Tapping Countersunk Screws (or equivalent)
• Material: A4 stainless steel (316 grade)
• Head Style: Countersunk (flush-fit)
• Drive: Pozi / Pozidrive (cross-recess)
• Thread Type: Self-tapping coarse thread (Type AB / Type C) — cuts into material without the need for a nut/pre-tapped hole
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• Package/Quantity: Often sold in packs (e.g, 100-pack as per the supplier)
• Application Materials: Wood (softwood, hardwood with pilot-hole for dense wood), plastics, thin sheet materials, composite materials (depending on thickness), light metals (where suitable)
• Typical Use Cases: Carpentry, joinery, furniture assembly, marine-grade fittings, exterior woodwork, cabinetry, plastic/metal panel fixings, general DIY & maintenance