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ASSY®plus A2 Decking construction screw
ASSY<SUP>®</SUP>plus A2 Decking construction screw - 1
ASSY<SUP>®</SUP>plus A2 Decking construction screw - 2
ASSY<SUP>®</SUP>plus A2 Decking construction screw - 3
ASSY<SUP>®</SUP>plus A2 Decking construction screw - 4
ASSY<SUP>®</SUP>plus A2 Decking construction screw - 5
ASSY<SUP>®</SUP>plus A2 Decking construction screw - 6

For detailed information, other images and documents, please select individual articles from the following table.

ASSY®plus A2 Decking construction screw

For precise fastening of decking boards. Many types of wood can be processed without pre-drilling thanks to the drill tip.

  • Nominal diameter: 5.5 mm
  • Head type: Raised countersunk head
  • Head diameter: 7.7 mm
  • Head height: 3.4 mm
  • Internal drive: AW20
  • Head details: Milling pockets
  • Thread type: Wood screw thread
  • Thread design: Partial thread
  • Version: With shaft
  • Thread format: Single thread
  • Core diameter: 3.6 mm
  • Shape of tip: Drilling tip
  • Material: Stainless steel A2
  • Surface: Plain
  • Max. screw-in angle: 90 Degree
  • Min. screw-in angle: 0 Degree
  • Suitable for use in the following materials: Board ply wood (BSP), Wood, Derived timber product, Hardwood, LVL, Softwood
  • Area of application: Outdoors, Balcony, Element construction, Façades, Wet areas, Timber construction, Timber panel construction, Structural woodwork, Play equipment, Board walk, Terrace, Fence
  • Additional accessory: Countersink with depth stop
  • Approval: ETA-11/0190
  • RoHS-compliant: Yes

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You can refine your search by selecting different attributes

Art.-no. Length Thread length (lg) Screw-thread length with drill tip (b) Nominal diameter Quantity PU
50 mm 23 mm 27.5 mm 5.5 mm
1000 pcs
70 mm 33 mm 37.5 mm 5.5 mm
250 pcs

Packaging unit

The packaging unit defines the number of articles in one packaging. In the catalog segment you can choose from different packaging units if a pop-up menu is displayed.

Just leave the field empty if you don't know the packaging unit when directly entering the article number in the shopping basket or when importing with Easy-/VarioScan. The packaging unit will be determined automatically.

Structure of our article number

The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:

Information on price and image display

Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

Price with price key representation (PSL):
The price always applies to a quantity ruled through the price key:
Price for 1 unit
Price for 100 units
Price for 1000 units


The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.

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Technical information

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Precise positioning and no splitting

Precise positioning of the screw is no problem at all thanks to its centring drilling tip, which was specially designed for this purpose. The drilling cutting edges guarantee perfect drilling performance, just like a Forstner bit. They also prevent irritating splitting or rupturing of the wood.

Clean and easy countersinking

Countersinking the small countersunk head is clean and easy, thanks to its small diameter. The under-head milling pockets pick up protruding chips. However, with tropical hardwood, countersinking of the surface is recommended, as these types of wood have very short chips.

Extremely robust

The grooved shaft provides for additional screw strength as austenitic stainless steel (A2/A4) cannot be hardened. This virtually eliminates the possibility of the screw tearing off.

AW drive for optimum locating and power transfer

The AW drive guarantees an excellent fit of the bit in the screw drive. This prevents wobbling impacts and sliding of the bit from the screw while screwing in.


Screwing down hardwood patio boards

Preliminary tests are required for hardwood. Pre-drilling of the wood may be necessary depending on the density and moisture level of the wood. It is recommended that the processing device be operated at a low speed.

When using these screws, the ETA-11/0190 specifications must be observed.

Available work documents:

Timber dimensioning software, load tables and detailed processing instructions can be found on the service page www.wuerth.de/assy.