ASSY® 3.0 zinc-plated blue chipboard screw
ASSY 3.0 steel zinc plated FT countersunk head AW
SCR-CS-WO-AW20-(A2K)-4X50/44
ASSY 3.0
Register now and access more than 125,000 products
Galvanised steel, blue coated, full thread, countersunk head, AW drive
Joins wood instead of splitting it
Asymmetrical thread – greater speed
- Low screw-in torque
- High over-turning force
- Faster screwing than conventional particle board screws
- Double thread: 3.0–4.5 mm
AW drive — more power
- Optimal force transmission
- Excellent fit
- Rapid finding
- Screw settles securely
- Virtually no unscrewing of bit
- No wobbling
- No damage to surface coating of screw
- Only 5 bit sizes for diameters 3.0 to 12.0 mm
Ring thread — less tendency of the wood to split, very few blow-outs
- Low splitting forces, in particular when screwing close to edges
- Reduction of screw-in torque
- Punch effect of ring thread largely prevents blow-outs
The screws are not suitable for outdoor use and for rooms subject to short-term or continuous high moisture levels! Please use ASSY® 3.0 A2 stainless steel screws in these cases.
To attach metals to wood, machine a precise cutout in the metal tab.
ASSY 3.0 chipboard screws are optimised for use in wooden materials. When used in plastic anchors, a reduction of the load-bearing capacity is possible. Therefore, we recommend only using screws without optimised thread tips (drill bit, mating thread, ring thread, serrated edge, self-clearing groove, etc.) in plastic dowels, e.g. Würth ASSY D, prefix 0151 (countersunk head) and prefix 0153 (pan head).
Available work documents:
Timber dimensioning software, load tables and detailed processing instructions can be found on the service page: www.wuerth.de/assy.
ETA-11/0190
When using these screws, please follow ETA-11/0190 specifications.Datasheets(X)
CAD data (available after login)
When screwing into hardwood, drill according to ETA-11/0190.
 | |
Nominal diameter (d) | 4 mm |
Length (l) | 50 mm |
Head type | Countersunk head |
Head diameter (dh) | 7.9 mm |
Head height (k) | 2.7 mm |
Internal drive | AW20 |
Thread type | Wood screw thread |
Thread design | Full thread |
Thread form | Single start thread |
Thread length (lg) | 44 mm |
Core diameter | 2.5 mm |
Shape of tip | Tip with ring thread |
Angle of the tip | 34 Degree |
Material | Hardened steel |
Surface | Zinc plated |
Colour | Silver |
Min./max. screw-in angle | 0-90 Degree |
Product weight (per item) | 2.794 g |
Suitable for use in the following materials | Wood |
Area of application | Universal |
Approval | ETA-11/0190 |
Screw requiring approval | Yes |
RoHS-compliant | Yes |
Last viewed
One-ear clamp setting tool for cavity anchors For Oetiker and axle boot clamps
Wheel brush Stainless steel, crimped, with shank
Chassis clamp
150 mm extension tube for precise application
Logo IV work T-shirt
Crimp cable lug, ring shape Polyamide insulated
Flat chisel with SDS-max drive arbor
Hexagon Socket Head Cap Screw with low Head DIN 7984, steel 8.8, zinc-plated, blue passivated (A2K)
Cheese head screw with hexagon socket head and shoulder ISO 7379, steel 12.9, plain, tolerance h8
Screw with flattened half round head with collar and hexagon socket ISO 7380-2, steel 10.9, zinc-plated, blue passivated (A2K)