Chipboard screw A2 ASSY® 3.0
ASSY 3.0 A2 SS partial thread countersunk head AW
SCR-CS-CTRHD-WO-A2-AW40-8X120/80
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A2 stainless steel, partial thread, milling pocket, AW drive
Joins wood without splitting or cracking it
Milling pocket for exceptional countersinking!
- Suitable for wood and fittings
- Minimum damage to coated wood materials
- Fewer chips on the surface
Shank milling cutter - the "auxiliary motor" for low force
- Reduction of the prevailing-on and head countersinking torque, especially with long screws
- Tool protection
- From diameter = 5 mm, L = 70 mm
Asymmetrical single-start thread - faster and higher tensile strength
- Low screw-in torque
- High mechanical strength
- Faster screwing than conventional chipboard screws
- Wide thread pitch: 5.0-12.0 mm
AW drive, greater power
- Excellent force transmission
- Excellent insertion
- Quick positioning
- Screw settles securely
- The bit practically never comes out
- No wobbling
- No damage to surface coating of screw
- Only 5 bit sizes for diameters 3.0 to 12.0 mm
Ring tip - wood less likely to split, very few blow-outs
- Minimal splitting effect, especially when screwing in near the edge
- Reduction in prevailing-on torque
- The special horizontal ring contains blow-outs when screwing
- Mating thread tip: 5.0-12.0 mm
Material:
Corrosion-resistant, austenitic stainless steel (1.4301; 1.4567)
Pre-drilling to the screw core diameter in solid hardwoods is recommended
ASSY 3.0 A2 screws are fairly resistant to acids and are not suitable for use in atmospheres containing chlorine gas. Use Würth's timber construction software to calculate ASSY screws with a diameter exceeding 5 mm.
To attach metals to wood, machine a precise cut-out in the metal tab.
ASSY 3.0 chipboard screws are optimised for use in wooden materials. Use in plastic anchors may cause a reduction in the load-bearing capacity. Therefore, we recommend only using screws without optimised thread tips (drill tip, mating thread tip, ring thread tip, serrated edge, self-clearing groove etc.) in plastic anchors, e.g. Würth ASSY D, prefix number 0151 (countersunk head) and prefix 0153 (pan head).
The range of applications of the various stainless steels is detailed in the following table issued by the ISER (German Information Office for Rustproof Stainless Steel, Non-Rusting Steels for Various Environmental Conditions, www.edelstahl-rostfrei.de, Information Sheet 828). Rustproof stainless steels (e.g. material no. 1.4016) are recommended in terms of atmospheric conditions only for use in a rural environment, and in this respect only subject to significant restrictions. We therefore recommend only using austenitic stainless steels for outdoor applications, taking the environmental conditions into account. Stainless steel A4 is especially suitable for use in an industrial atmosphere and for use near the sea.
Available work documents:
Dimensioning software, data sheets and European technical assessments can be found on our website www.wuerth.it/assy.
ETA-11/0190
When using these screws, please comply with ETA-11/0190 specifications.
Datasheets(X)
CAD data (available after login)
The ASSY 3.0 A2 screw made from corrosion-resistant, austenitic stainless steel is designed especially for applications outdoors, in damp rooms and in salty atmospheres
Screw-in angle 0° to 90°. Screw in without pre-drilling in conifer wood and softwood. To reduce the edge distances, pre-drill a hole according to the screw core diameter. Hardwood must be pre-drilled in accordance with ETA-11/0190.
 | |
Nominal diameter (d) | 8 mm |
Length (l) | 120 mm |
Thread length (lg) | 80 mm |
Head type | Countersunk milling pocket head |
Head details | Milling pockets |
Head diameter (dh) | 15 mm |
Head height (k) | 4.6 mm |
Internal drive | AW40 |
Thread type | Wood screw thread |
Thread design | Partial thread |
Thread form | Single start thread |
Core diameter | 5 mm |
Shape of tip | Tip with ring thread |
Angle of the tip | 30 Degree |
Material | Stainless steel A2 |
Surface | Plain |
Min./max. screw-in angle | 0-90 Degree |
Suitable for use in the following materials | Wood, Derived timber product, Softwood, Board ply wood (BSP), Hardwood, LVL |
Area of application | Façades, Terrace, Fence, Structural woodwork, Element construction, Timber panel construction, Timber construction, Wet areas, Play equipment, Outdoors, Board walk, Balcony |
Screw requiring approval | Yes |
Approval | ETA-11/0190 |
RoHS-compliant | Yes |
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