Page 533 - Wurth Total Catalogue

ASSY PLUS A2/A4 DECKING CONSTRUCTION SCREW The screw for fastening decking boards.
Many types of wood can be processed
without pre-drilling thanks to the
unique drilling tip.

Drive
• Splitting and tearing of the wood is prevented.
• Excellent snug fit of the bit in the screw drive,
which allows the screw to be set very easily.
• Wobbling impacts and sliding of the bit
from the screw is prevented when screwing in.

ETA-11/0190 Small countersunk head with
under-head pockets.
• The head can be sunk very easily and cleanly
with a small diameter.
• The under-head pockets pick up protruding
chips.
• However, with tropical hardwoods,
countersinking of the surface is recommended,
as the wood has very short chips.
d L lg b dh Drive A2/304 P. Qty. A4/316 P. Qty.
mm mm mm mm mm Art. No. Art. No. Grooved shaft.
50 23 27 0166 115 550 1,000 0169 015 550 Provides for additional screw strength as
5.5 7.5 AW 20 250
70 33 37 0166 115 570 250 0169 015 570 austenitic stainless steel (A2/A4) cannot be
hardened. This virtually eliminates the possibility
Screwing on of hardwood decking A4/316 Stainless Steel is ideal in coastal of the screw tearing off.
planks: areas, marine applications that are
Preliminary tests are required for hardwoods. Pre- subject to salt water or have a risk of Drilling tip.
drilling of the wood may be necessary depending high exposure to chlorine. • Unique pointed drilling tip allows for quick
on the density and moisture level of the wood. It positioning and optimal performance.
is recommended that the processing device be Pre-drilling is recommended for • Reduced splitting even when drilling close to
operated at a low speed. hardwoods. the edges.
Material: A2/304 or A4/316 Stainless Steel. • Exact pre-drilling with no wobbling.

Container for 50mm A2/304 Decking
Screw. Holds 1,000 screws.

The range of applications of the various stainless steels is contained in We therefore recommend only using austenitic stainless steels for outdoor
the following table of the ISER (German Information Office for Rustproof applications while taking the environmental conditions into account. The
Stainless Steel, Information Leaflet 828). Rustproof stainless steels stainless steel A4 is especially suitable for use in an industrial atmosphere
(e.g. material number 1.4016) are recommended there for and for use near the sea.
use in the atmospheric area only in a rural environment, and
then only with great restrictions.

Environment
Steel types Material No. Rural Urban Industry Near sea
Short name • Custom Design - Wurth branded.
N M H N M H N M H N M H
X5CrNiMo17-12-2 1.4401/1.4578 Würth A4 (0169 005 …) x x x x + + + + (+) + + (+) • Highly visible container.
X5Cr-Ni18-10 1.4301/1.4567 Würth A2 (0166 105 …) + + + + + (+) (+) (+) – + (+) – • Provides greater convenience to store and
X6Cr17 1.4016 Many competitors (+) (+) (+) (+) – – (+) – – – – – protect our high quality decking screws.
N = Lowest corrosion loading within the respective environment, + = Probably the best choice of materials with regard to corrosion • Waterproof and fully reusable.
characterized, for example, by low temperatures and low humidity (+) = Sufficient behavior, provided certain precautionary measures • Even dishwasher safe!
resistance and costs
M = Medium corrosion loading within the respective environment
AUS. pub. 10/17 © H = Higher corrosion loading within the respective environment, e.g. – = Probably heavy corrosion • All designed to withstand the toughest
are taken, particularly with regard to smooth surface finishes and
regular cleaning
due to continuously high humidity, high ambient temperatures,
especially aggressive air pollution
conditions! It also includes our unique peel &
go sticker for ORSY applicable customers.
06 3722