SS304 T17 Square Recess Countersunk with Slant Ribs 8-9x40-50 A2

Product Features
304 Stainless Steel Material, Moisture‑Resistant and Rust‑Proof: Made of A2 austenitic stainless steel substrate, it withstands rain and humid conditions without rusting or staining wood over long‑term outdoor use. It is compatible with various preservative‑treated timbers and performs reliably even in indoor damp areas.
T17 Cutting Point, Pre‑Drilling Free and Split‑Resistant: The tip features chip‑evacuating cutting grooves, eliminating the need for pre‑drilling. With low driving resistance, it minimises the risk of splitting in both softwoods and hardwoods, significantly improving installation efficiency.
Square Recess Drive, High Torque with No Stripping: The square recess provides a tight bit engagement, reducing slippage or wear during power‑tool operation. Ideal for high‑volume installations, its durability outperforms ordinary cross‑recess screws.
Countersunk Head with Slant Ribs Design for a Flush Surface: The tapered slant ribs automatically cut the countersink during driving, allowing the screw head to embed fully into the panel without protrusions. This eliminates the need for secondary sanding and enhances the aesthetic quality of surface finishes.
Deep Coarse Threads for Strong Fastening: The deep, coarse threads firmly engage wood fibres, providing excellent pull‑out resistance and preventing loosening. The 40‑50mm length range is well‑suited for medium‑thick timber boards, ensuring secure and lasting fixation.