ASSY^® 4 A2 CS universal screw A2 stainless steel plain partial thread countersunk head

Name: ASSY ® 4 A2 CS universal screw A2 stainless steel plain partial thread countersunk head
Brand: Würth
SKU: 018744550

ASSY 4 A2 CS sst A2 PT countersunk head RW
SCR-CS-WO-A2-RW20-4,5X50/33
ASSY 4 A2 CS

Art.-no. 018744550

EAN 4061975615206

All versions

Specification

Partial-thread screw made of high-quality austenitic A2 stainless steel with countersunk head for universal wood-wood fastening in outdoor areas exposed to the elements

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

Higher breaking torque

Higher power transmission in hardwoods due to reinforced, asymmetrical thread flank geometry of the single thread

Better anchoring thanks to higher thread flanks

Smooth thread start ensures optimised recessing and biting of the screw

Reduced splitting effect due to displacement effect of the dome-shaped milling elements in the tip

Friction-reduced thread rotation allows reduction of the screw-in force to be applied

Stainless mounting for accessible wood connections in outdoor areas exposed to weathering

Made of austenitic, non-magnetic and non-rusting A2 stainless steel

Can be used in rural or urban environments or industrial atmospheres without significant exposure to chlorides or SO₂

With friction-reducing slide coating for easy fastening

Notice

Austenitic stainless steel is characterised by a high degree of corrosion resistance against aggressive industrial air, sea air, tap water, river water, mine water and salt water, as well as woods containing tannic acid. It is resistant to acid to a certain extent and not suitable for atmospheres containing chlorine gas

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

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

Application

Application area

For wood-wood connections designed to pull together

The partial thread starting immediately below the shank allows for wood-wood connections designed to pull together. The screw thread is positioned entirely in the lower component once screwed in.

Can be used for outdoor applications and utilisation class 3

Instructions

To increase the joining effect or head pull-through resistance, combining with perfectly fitting washers for ASSY 4 is recommended

ASSY screws are approved for quasi-static loads

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

Technical information


Nominal diameter (d)	4.5 mm
Length (l)	50 mm
Head type	Countersunk head
Head diameter (d_h)	8.9 mm
Head height (k)	2.8 mm
Internal drive	RW20
Thread type	Wood screw thread
Thread design	Partial thread
Thread form	Single start thread
Thread length (lg)	33 mm
Core diameter	2.7 mm
Shape of tip	Tip with hilltop milling cutter
Angle of the tip	28 Degree
Material	Stainless steel A2
Surface	Plain
Min./max. screw-in angle	0-90 Degree
Product weight (per item)	3.450 g
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, Wet areas, Balcony, Board walk, Play equipment, Outdoors
Suitable machines	Würth BS 12-A Power, Würth BS 14-A Combi
Approval	ETA-11/0190
Screw requiring approval	Yes
RoHS-compliant	Yes

Documents

Product information

Datasheets (0)

Certificates/ Documents (0)

Accessory

Additional accessory:

Product

Description

Quantity

Price
/PU

RW® bit

BIT-RW20-LUMINOUSORANGE-1/4ZO-L25MM

Art.-no. 061470 20

The perfect bit for the new generation of ASSY screws

x 10 pcs

RW® bit

BIT-RW20-LUMINOUSORANGE-1/4ZO-L50MM

Art.-no. 061471 20

The perfect bit for the new generation of ASSY screws

x 5 pcs

RW® bit

BIT-RW20-LUMINOUSORANGE-1/4ZO-L120MM

Art.-no. 061472 20

The perfect bit for the new generation of ASSY screws

x 5 pcs

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