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Wood deck screws / wood joists

Stainless steel decking screws

Simple and fast
304 stainless steel
Features
  • A.: Deep Torx recess to prevent bit rejection and slippage
  • B.: Notches under the head to lock in at required depth.
  • C.: Spiral top to facilitate the penetration of the screw in the wood
  • D.: Sharp point to reduce wood splitting
  • E.: Razor-sharp thread for better penetration into wood
  • AISI304 stainless steel screws

A self-drilling stainless steel screw for easy installation

The COBRA® self-drilling stainless steel screw has been developed to make it easier to attach deck boards to wooden joists.  The screw head has a deep Torx recess to prevent losing the screw head and slippage.

Made of AISI304 stainless steel (A2), Cobra screws fix and holds your decking efficiently and durably. 

Cobra screws could be used to fix all types of wooden deck boards. For very high density wood species, predrilling is recommended. 

Material
AISI304 stainless steel (A2)
Dimensions
5x50mm
5x60mm
6x70mm
Screw head diameter
8,7mm
Bit
T25 for M5 screws
T30 for M6 screws
Packaging
5x50 mm (200 pcs)
5x50 mm (500 pcs) + 4 spacers + 1 drill bit
5x60 mm (500 pcs) + 4 spacers + drill bit
5x60 mm (200 pcs)
6x70 mm (100 pcs)

Screws to fix all kinds of decking materials

The length of the screw should be 2.5 times the thickness of the decking.  3 screw sizes are available, to match with the majority of decking boards available in the market

 

   5x50 mm

   Decking between 21 and 23 mm thickness

   5x60 mm

   Decking between 24 and 27 mm thickness

   6x70 mm

   Decking up to 28 mm thickness

We strongly recommend pre-drilling very dense hardwoods (over 900 kg/m3) 

Structure

Hradwood wood

Softwood

Aluminium

Steel

Use

-

-

 

 

Fixing to wood joists

Two screws are required on each joist

When using our Cobra Smart Bit drill and countersink tool, make sure to choose the right drill diameter.  The top of the countersink head screw must be slightly lower than the upper face of the board (2mm)

The fixing distance should be located at 1.5 to 2 cm from the board side edge, and less than 5 cm from the end edge to avoid splitting the wood. 

Screw dimensions

Name

Size

A (mm)

L (mm)

U (mm)

D (mm)

dr (mm)

Torx

0601 - 0799

M5x50

8

50

4

5

4

T25

0602 - 0966

M5x60

8

60

8

5

4

T25

0613

M6x70

10

70

10

6

5

T30

Technical documents

  • Product sheet – Wood deck screws COBRA.pdf
  • COBRA-CATA2021-GB.pdf
DECK STRUCTURES
DECK TOOLS
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