ASSY®plus 4 TH glass strip screw Hardened burnished steel partial thread top head 60°
ASSYplus 4 TH, bronzed steel, PT top head RW
SCR-TOPHEAD-DBIT-RW10-(BRN)-3X50/22
ASSYPLUS 4 TH
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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
Precise positioning and very clean drilling due to advanced centring drill tip
- Positioning and drilling without chipping
- Maximum drilling performance and precise drilling process through drilling cutting edges (similar to Forstner bits)
- Precise positioning on hard surfaces without slipping thanks to centring pin
- Quick screwing due to gentle start of thread
Well-designed, unobtrusive mounting of narrow wooden components
- Small screw head with lens-shaped rounded head for well-designed, unobtrusive mounting
- Highly effective milling ribs prevent narrow wooden profiles from splitting
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
- Do not use the screw in applications with direct exposure to the elements or in humid rooms with atmospheres containing chlorine gas. Please use ASSYplus 4 stainless steel screws for outdoor applications and rooms with constant high humidity
- We recommend using the Würth software or the corresponding design aids for planning and dimensioning your assembly. Dimensions of the ASSY screws can be carried out in the Würth timber construction software from a ∅ of 5 mm
- 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
ETA-11/0190 approved
The requirements of the European Technical Approval (ETA) must be observed.
Datasheets(X)
For wood-wood connections designed to pull together
A wood-wood connection designed to pull together is possible owing to partial thread starting immediately after the shank. The thread in this case is positioned entirely in the lower second component.
For applications in utilisation class 1
- Visually appealing brown surface finish, 3 µm layer thickness
- For use in wood surfaces or burnished furniture fittings for use in utilisation class 1 (interior)
- For optimum use of the screw, the right-size RW bit must be used
- Partial-thread screws are ideal for connecting wooden components. To achieve optimum assembly of the components, the components to be fixed must not be thicker than the length of the shank
 | |
Nominal diameter (d) | 3 mm |
Length (l) | 50 mm |
Thread length (lg) (lg) | 22 mm |
Screw-thread length with drill tip (b) (b) | 25.5 mm |
Head type | Top head 60 degree |
Head details | Milling ribs |
Head diameter (dh) | 5.2 mm |
Head height (k) | 3.3 mm |
Internal drive | RW10 |
Thread type | Wood screw thread |
Thread design | Partial thread |
Design | With shaft |
Thread form | Single start thread |
Core diameter | 2.1 mm |
Shape of tip | Drilling tip |
Material | Hardened steel |
Surface | Burnished |
Max. screw-in angle | 90 Degree |
Min. screw-in angle | 45 Degree |
Suitable for use in the following materials | Board ply wood (BSP), Wood, Derived timber product, Hardwood, LVL, Softwood |
Area of application | Furniture, Body, Store construction, Exhibition stand construction, Interior fitting |
Approval | ETA-11/0190 |
Product weight (per item) | 1.700 g |
RoHS-compliant | Yes |
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