ASSY® 4 CSMR sports floor screw Steel zinc plated full thread countersunk milling head
ASSY 4 CSMR sports floor ST zp FT cs mill. head RW
SCR-CTRHD-MG/HOHE-RW20-(A2K)-4X30/24
ASSY 4 CSMR
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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
Easy countersinking in hardwood/softwood with high knot content as well as hard wood fibreboards
- Very high milling performance due to milling ribs located at the countersunk head
No over-tightening or stripping and high feed
- Higher power transmission in hardwoods due to reinforced, asymmetrical thread flank geometry of the coarse thread
- Better anchoring thanks to higher thread flanks
Ideal for friction-free screw fitting in plastic, such as in dowels 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
- ASSY 4, ASSYplus 4 and ASSYplus 4 FT chipboard screws are optimised for use in wood and wood materials. For applications in plastic anchors where load capacity can also be reduced, use only screws without an optimised thread tip (tip with milling ribs, drill tip, self-clearing groove etc.), such as the ASSY D screws with countersunk head or pan head
Datasheets(X)
Quick series fitting for panel material-wood connectors
- For all manual trade applications
- With hand-held devices for collated screws
- The full thread starting immediately below the head allows for e.g. panel material to wood connection possible. 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 ∅ > 4 mm in utilisation class 2 (wet area or 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 reinforcing and creating high-load-bearing connections of two components. Components should be connected without any gap
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Colour | Silver |
Nominal diameter (d) | 4 mm |
Length (l) | 30 mm |
Thread length (lg) | 24 mm |
Head type | Countersunk milling head |
Head diameter (dh) | 8 mm |
Head height (k) | 3.2 mm |
Head details | Milling ribs |
Internal drive | RW20 |
Thread type | Wood screw thread |
Thread form | Single start thread |
Thread design | Full thread |
Core diameter | 2.6 mm |
Shape of tip | Tip |
Angle of the tip | 20 Degree |
Belted | Holz-Her |
Material | Hardened steel |
Surface | Zinc plated |
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 | Timber construction, Interior fitting, Furniture, Sports floor, Universal |
Suitable machines | Prebena 9D-62-45 CS, Holz-Her 3337 magazine screwdriver, Holz-Her 3350 magazine screwdriver, Holz-Her 3352 magazine screwdriver, Holz-Her 3362 magazine screwdriver, Würth ASSYmat 50 with HS 16 |
Approval | ETA-11/0190 |
RoHS-compliant | Yes |
Select RAL-colour code
!! NOTE: On-screen visualisation of the colour differs from real colour shade!!