ASSY^® 4 A2 WH washer head screw A2 stainless steel plain partial thread washer head

Name: ASSY ® 4 A2 WH washer head screw A2 stainless steel plain partial thread washer head
Brand: ASSY 4 A2 WH
SKU: 0181818140

ASSY 4 A2 WH stainless steel A2 PT washer head RW
SCR-SK-WO-A2-RW40-8X140/80
ASSY 4 A2 WH

Art.-no. 0181818140

EAN 4061975616951

All versions

Specification

Partial-thread screw made of high-quality austenitic A2 stainless steel with large washer head for 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

Visually appealing screw connection on wood surface

Very high head pull-through values and strong tightening effect thanks to a large head diameter

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. 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

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

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

For long screws arranged in a cross shape or in a screw block with narrow edge clearances, it is advisable to drill pilot holes or use a screw-in aid to avoid intersecting of the screws

Technical information


Nominal diameter (d)	8 mm
Length (l)	140 mm
Thread length (lg)	80 mm
Head type	Round washer head
Head diameter (d_h)	18.9 mm
Head height (k)	3.8 mm
Internal drive	RW40
Thread type	Wood screw thread
Thread design	Partial thread
Thread form	Single start thread
Core diameter	5.1 mm
Shape of tip	Tip with hilltop milling cutter
Angle of the tip	30 Degree
Material	Stainless steel A2
Surface	Plain
Max. screw-in angle	90 Degree
Min. screw-in angle	0 Degree
Suitable for use in the following materials	Wood, Derived timber product, Softwood, Board ply wood (BSP), Hardwood, LVL
Area of application	Outdoors, Balcony construction, Bridge construction, Wet areas, Timber construction, Structural woodwork, Solar collector, Play equipment, Board walk
Approval	ETA-11/0190
RoHS-compliant	Yes

Documents

Product information

Würth Catalogue (2)

Flip Book

Catalogue page as PDF 1

Datasheets (0)

Certificates/ Documents (6)

Declaration of performance EN

Declaration of performance DE

Approval/Assessment 1

Approval/Assessment 2

Approval/Assessment 3

Approval/Assessment 4

CAD data

Click here for the complete CAD library.

Accessory

Additional accessory:

Product

Description

Quantity

Price
/PU

RW® bit

BIT-RW40-LUMINOUSPINK-1/4ZO-L25MM

Art.-no. 061470 40

The perfect bit for the new generation of ASSY screws

x 10 pcs

RW® bit

BIT-RW40-LUMINOUSPINK-1/4ZO-L50MM

Art.-no. 061471 40

The perfect bit for the new generation of ASSY screws

x 5 pcs

RW® bit

BIT-RW40-LUMINOUSPINK-1/4ZO-L120MM

Art.-no. 061472 40

The perfect bit for the new generation of ASSY screws

x 5 pcs

The packaging unit defines the number of articles in one packaging. In the catalog segment you can choose from different packaging units if a pop-up menu is displayed.

Just leave the field empty if you don't know the packaging unit when directly entering the article number in the shopping basket or when importing with v

The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
VVVVAAABBB
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
VVVVAAABBB
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:
VVVVAAABBB
04076

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