ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 1

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 2

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 3

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 4

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 5

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 6

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 7

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 8

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 9

ASSY<SUP>®</SUP> 4 Isotop roofing screw Steel zinc plated double thread cylinder head - SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60 - 10

ASSY^® 4 Isotop roofing screw Steel zinc plated double thread cylinder head

Name: ASSY ® 4 Isotop roofing screw Steel zinc plated double thread cylinder head
Brand: Würth
SKU: 0164518250

ASSY 4 Isotop steel zinc plated PT cheese head RW
SCR-CYL-ISOTOP-WO-RW40-(A3K)-8X250/60
ASSY 4 ISOTOP

Art.-no. 0164518250

EAN 4061975608628

All versions

Price for selected packaging unit

ASSY^® 4 Isotop roofing screw Steel zinc plated double thread cylinder head

Art.-no. 0164518250

Price for selected packaging unit

Quantity

x 100 pcs

Exclusively for trade customers

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Specification

Special double threaded screw ideal for fixing roof insulation and façade mountings with soft or pressure-resistant insulation materials in indoor dry or sheltered areas

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

Unobtrusive mounting of wooden components

Small head diameter for unobtrusive mounting

Low splitting effect when countersinking the screw 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

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

Ideal for flexible loads such as insulation on rafters

Bridging non-load-bearing spaces

Notice

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 for screw applications with direct exposure to the elements or in humid rooms with atmospheres containing chlorine gas

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

Application

Application area

For wood-wood connections designed for anchoring

The double thread with internal shaft area enables a wood-wood connection designed for anchoring. This enables a non-load-bearing layer to be bridged. The larger outer diameter of the upper thread increases the head pull-through value.

For applications in utilisation class 1 and utilisation class 2 (from ∅ > 4 mm)

High-quality surface protection, zinc, blue-passivated chromium(VI)-free 8 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

The requirement of classification T2/C2 is fulfilled in accordance with prEN 14592:2017 (D)

Instructions

ASSY screws are approved for quasi-static loads

For optimum use of the screw, the right-size RW bit must be used

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
Nominal diameter 2	10 mm
Thread length (lg)	60 mm
Head thread length	70 mm
Länge (l)	250 mm
Head type	Socket head
Head diameter (d_h)	11 mm
Head height (k)	9 mm
Internal drive	RW40
Thread type	Wood screw thread
Thread design	Double thread
Thread form	Coarse thread
Core diameter	5.3 mm
Core diameter of head thread	6.3 mm
Angle of the tip	34 Degree
Shape of tip	Tip with hilltop milling cutter
Werkstoff	Unhardened steel
Oberfläche	Zinc plated
Min./max. screw-in angle	0-90 Degree
Produktgewicht (per Stück)	70.500 g
Suitable for use in the following materials	Wood, LVL, Board ply wood (BSP), Softwood, Hardwood, Derived timber product
Type d'application	On rafter insulation, Façades
Additional accessory	Screw template for ASSY ® ISOTOP chipboard screw
Additional articles	Data sheets for over-rafter insulation
Screw requiring approval	Yes
Approval	ETA-11/0190
RoHS-compliant	Yes

Documents

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Accessory

Required accessory:

Product

Description

Quantity

Price
/PU

Screw-in angle 45/60 degrees

SCRINAID-SCR-ASSY-(60-45°)-200X120X30

ASSY

Art.-no. 016530020

Easy-to-install screw-in angle for quick and precise angled fitting of long ASSY timber screws at an angle of 45 or 60 degrees

x 2 pcs

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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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Additional accessory:

Product

Description

Quantity

Price
/PU