Marine Grade Stainless Steel A4 316 Torx Double Countersunk Screws available in extra long lengths. Torx TX25.
Use A4 for fixing in coastal regions, it is also the best option for Green Oak and other woods with a high level of tannin.
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Double countersunk Heads For extra strength and sharp points to eliminate
pre-drilling even in most hardwoods. Ribs under head on 6mm x 140mm and above, on 8mm and 10mm Diameter.
Reinforced double countersunk Head. A4 available for marine environments.
European technical approval
ETA 11/0283 (Diameter 3,0 and 3,5 not component in the approval)
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Stainles Steel A4 316 marine grade wood screws with a double countersunk reinforced head.
Available with plain head and sharp point or Ribbed head and cutting tip.