ASSY® 4 CS MDF fittings screw Steel zinc-plated full thread countersunk head
ASSY 4 CS MDF steel zinc ptd. FT counters. head RW
SCR-CS-MDF-RW10-(A2K)-3,4X20/16
ASSY 4 CS MDF
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Ideal power transmission thanks to RW drive
- More power due to larger contact area at the bit
- More stability, one-handed working, precise positioning due to the tight-fit recess and perfect fit of the bit
- Fewer bit changes, one bit for many screw diameters
- Compatibility with previous AW drive
Form-fitting connection to metal fittings or in wooden products with high bulk density
- For fitting connection with full-thread steel screws
- Perfect fit of 90° head in fitting parts with metal countersinks
- Pulls together without head milling due to lack of milling elements below the head
- The head is inserted by pressing
Maximum reliability of the screw connection due to asymmetrical single thread
- Optimal matching of drill tip and thread geometry
- Excellent anchoring in wood due to asymmetrical arrangement of thread flanks
Ideal for friction-free screw fitting in plastic, such as in anchors or in homogeneous highly compressed wooden materials
- Screw bites rapidly through the continuous thread design to the tip of the screw
- Non-spreading screwing in thanks to tip geometry without any component to reduce splitting
- We recommend using the Würth software or the corresponding design aids for planning and dimensioning your assembly. Use the Würth timber construction software for dimensioning of ASSY screws from a diameter of 5 mm
- Do not use the screw in applications with direct exposure to the elements or in humid rooms with atmospheres containing chlorine gas. If used outdoors and in rooms that are constantly exposed to high humidity, please use ASSY 4 A2 or A4 stainless steel screws and, if atmosphere contains chlorine, HCR stainless steel screws
ETA-11/0190 approved
The requirements of the European Technical Approval (ETA) must be observed
Datasheets(X)
For steel-wood connections designed for tensile forces
The full thread starting immediately below the head allows for e.g. fitting-wood or sheet material-wood connections designed for tensile forces with high load-bearing capacity. Greater screw pull-out force is achieved by the maximum thread length.
For applications in utilisation class 1 and utilisation class 2 (from ∅ > 4 mm)
- High-quality surface protection, zinc, blue-passivated chromium(VI)-free 5 µm layer thickness
- Suitable for use in utilisation class 1 (interior) and from a ∅ > 4 mm in utilisation class 2 (covered outdoor area) according to EN 1995-1-1:2010-12 + DIN SPEC 1052-100:2013-08
- ASSY screws are approved for quasi-static loads
- For optimum use of the screw, the right-size RW bit must be used
- Full-thread screws are suitable for secure mounting of fittings or thin materials. The screw length to be selected should be less than the plate thickness of substrate the screw is to be driven in
 | |
Nominal diameter (d) | 3.4 mm |
Length (l) | 20 mm |
Head type | Countersunk head |
Head diameter (dh) | 7 mm |
Head height (k) | 2.3 mm |
Internal drive | RW10 |
Thread type | Wood screw thread |
Thread design | Full thread |
Thread form | Single start thread |
Thread length (lg) | 16 mm |
Core diameter | 1.8 mm |
Shape of tip | Tip with hilltop milling cutter |
Angle of the tip | 30 Degree |
Material | Hardened steel |
Surface | Zinc plated |
Colour | Silver |
Min./max. screw-in angle | 0-90 Degree |
Product weight (per item) | 0.800 g |
Suitable for use in the following materials | Wood |
Area of application | Interior fitting |
Suitable machines | Würth BS 12-A Power |
Approval | ETA-11/0190 |
Screw requiring approval | Yes |
RoHS-compliant | Yes |
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