Simpson: DCU COMPOSITE Screw Composite to Timber (Loose)

Available Size (mm) / Qty / Colour

10G x 70 / 250 / Brown
10G x 70 / 250 / Grey

SKU: DCU234BRR250 DCU234GRR250 Categories: , ,


The DCU is designed to work in all types of composite decking without sacrificing performance. The DCU provides a cleaner, less noticeable installed appearance due to the special head design, and is available in 4 colours, matched to blend with most composite deck products.

Features & Benefits

  • Double-cut point penetrates boards with ease for faster starts.
  • Tri-lobe thread design reduces damage to the composite board while driving.
  • Cap-head and inverted upper threads prevents mushrooming.
  • T-20, 6-lobe deep recess reduces cam-out, making driving easier.
  • Inverted upper threads clear excess material to ensure the screw is seated properly and consistently.
  • Quik Guard® is a Class 3 coating as per AS3566.2.
  • 316 Stainless Steel for more corrosive environments such as coastal areas.
  • Stainless Steel has the ductility to allow for movement of timber decking.
  • Available in 4 colours.
  • For composite decking (up to 25 mm thick) to timber joist
  • This screw is available loose for hand-drive
Source credit: Simpson Strong-Tie 

Additional information

SKU / Size (mm) / Qty / Colour

DCU234BRR250 / 10G x 70 / 250 / Brown
DCU234GRR250 / 10G x 70 / 250 / Grey