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The Range£10.17Visit shop Unifix A2-304 Self-Tapping Screws 10G X 2" (4.8 X 50Mm) - Q207982c00480050000 - Box Of 200 - Grey
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The Unifix A2-304 Self-Tapping Screws are professional-grade fasteners designed for contractors and DIY enthusiasts who require reliable, long-lasting connections in wood and metal applications. These 10G x 1.1/2 inch screws provide excellent holding power and superior corrosion resistance, though they require a pilot hole when working with denser materials to prevent snapping or surface damage.
| Colour | Grey |
|---|---|
| Model Part Number | Q207982C00480038000 |
| Brand | Unifix |
These are A2-304 stainless steel, which is excellent for general outdoor use but not recommended for direct salt-water or marine environments, where A4 (316) grade is required.
While they are self-tapping, pre-drilling is highly recommended when working with hardwoods or dense metals to ensure a clean installation.
Pozi drive screws have additional small notches in the head, providing a better grip for the driver and reducing the chance of the bit slipping out.
No, these are general-purpose self-tapping screws and should not be used in load-bearing structural applications that require specific tensile ratings.
Each box contains 500 screws.
Ensure you are using the correct Pozi bit size rather than a standard Phillips bit, and apply consistent downward pressure.
Drill a small pilot hole first to reduce friction and prevent the screw from snapping.
Use a countersink bit to prepare the hole, allowing the screw head to sit flush without exerting outward pressure on the material.
To install, ensure you are using a correctly sized Pozi-compatible screwdriver bit to prevent stripping the head. While the screws are self-tapping, drilling a pilot hole roughly 80% of the screw diameter is recommended when fastening into dense hardwoods to avoid wood splitting. For care, store in a cool, dry place to maintain the integrity of the threads. Although stainless steel is durable, avoid using these screws in direct contact with incompatible metals to prevent galvanic corrosion.
