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ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 1
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 2
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 3
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 4
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 5
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 6
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 7
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 8
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 9
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 10
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 11
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 12
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 13
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 14
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 15
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 16
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 17
ASSY<SUP>®</SUP> 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head - SCR-CSMP-P-WO-RW40-(A3K)-8X250/100 - 18

ASSY® 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head

ASSY 4 PII CSMP steel zinc pltd underhead thr. RW
SCR-CSMP-P-WO-RW40-(A3K)-8X250/100
ASSY 4 P CSMP

Art.-no. 0190440825
EAN 4065746086691
All versions

Prices for customers after login
ASSY® 4 PII CSMP universal screw Steel zinc-plated partial thread with underhead thread milling pocket head

Art.-no. 0190440825

Prices for customers after login
Quantity
PU
x 50 pcs

Exclusively for trade customers

Register now and access more than 125,000 products

Special partial thread screw with underhead thread with tightening effect for flat, close-to-edge and high-load-bearing wood-wood and steel-wood connections with no gap in interior finishing or timber construction in dry indoor areas or damp areas

Ideal power transmission thanks to RW recess


  • More power due to larger contact area at the bit

  • More stability, one-handed working and 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


Innovative underhead thread


  • Very high head pull-through (> ASSY 4 WH) due to supporting underhead thread and increased head diameter

  • Gap-free assembly is ensured by the opposite grooved shank applying pressure and the underhead thread with a smaller pitch, tightening effect approx. 2 mm

  • Suitable for wood-wood and steel-wood connections due to 90° countersunk head and identical outer diameter of both threads

  • Two wooden elements can be precisely joined thanks to the head fitting flush with the wood surface


Very easy to install


  • Improved head countersinking and reduced risk of head breakage in hard wood surfaces (knotted areas) due to more uniform distribution of tension between head and underhead thread

  • Simplifies assembly and reduces the range of screws that need to be kept on assembly vehicles by combining the characteristics of countersunk head screws and washer head screws

  • Optimised grooving and biting of the screw due to gentle thread start

  • Low gap effect due to displacement effect of the dome-shaped milling elements in the tip
Proof of Performance

Approved as per ETA-11/0190

Notice
  • We recommend using the Würth software or corresponding design aids for planning and designing your installation. Dimensioning 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 VG chipboard screws are optimised for use in wood and engineered wood. For applications in plastic anchors where the load 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 area
Steel zinc-plated, utilisation class 1 and 2, draft 22/11/2023
Characteristic load capacities of the connector
Fax,RkFv,Rk
DimensionsArt. no. PUlst1,mint1,max,90/90t1,max,90/090°/90°90°/0°90°/90°90°/0°
UnitmmmmmmmmkNkNkNkN
ASSY 4 PII CSMP
Screwing and press gluing, thread length required lg =15xd
KeyGeneral
Component 1 (screw head)Design value for load capacity
Component 2 (screw tip)
Component thickness t2 ≥ls - t1
characteristic raw density ρk = 350 kg/m³
8x70/320190 440 80750703238---2,82---2,50---
8x80/320190 440 80850803248---2,82---2,75---
8x90/320190 440 80950903258---2,82---2,75---
8x110/500190 440 811501103260---4,40---3,15---
8x130/600190 440 813501303270---5,28---3,37---
8x150/800190 440 815501503270---7,04---3,81---
8x170/800190 440 817501703290---7,04---3,81---
8x190/800190 440 8195019042110---7,04---3,81---
8x210/1000190 440 8215021042110507,872,644,312,55
8x230/1000190 440 8235023042130707,872,644,312,55
8x250/1000190 440 8255025042150907,872,644,312,55
8x270/1000190 440 82750270421701107,872,644,312,55
8x290/1000190 440 82950290421901307,872,644,312,55
8x310/1000190 440 83150310422101507,872,644,312,55
8x330/1000190 440 83350330422301707,872,644,312,55
8x350/1000190 440 83550350422501907,872,644,312,55
8x370/1000190 440 83750370422702107,872,644,312,55
8x210/1200190 440 921502104270507,873,174,312,55
8x270/1200190 440 92750270421501107,873,174,312,55
8x330/1200190 440 93350330422101707,873,174,312,55
  • ls - Length of the screw

  • 90°/90° - Screw-to-fibre angle 90° in component 1, 90° in component 2

  • 90°/0° - Screw-to-fibre angle 90° in component 1, 0° in component 2

  • t1,min - Minimum thickness of the component at the head end

  • t1,max,90/90 - Maximum thickness of component 1 at screw-to-fibre angle 90° in component 2

  • t1,max,90/0 - Maximum thickness of component 1 at screw-to-fibre angle 0° in component 2

  • Fax,Rk - Characteristic resistance of the connector to pull-out

  • Fv,Rk - Characteristic resistance of the connector to shearing
  • Holes not pre-drilled.

  • The screw is screwed into component 1 flush with the surface.

  • The load capacities apply for all component thicknesses t1,min ≤t1≤ t1,max.

  • For t1 ≥t1,min higher values may result for resistance to shearing.

  • Selected cross sections must fulfil the requirements for minimum cross section in accordance with ETA-11/0190.
Component thickness t1,min ≤t1 ≤t1,max
characteristic raw density ρk = 350 kg/m³		Fax,Rd = kmod · Fax,Rk/ϒM
Fv,Rd = kmod · Fv,Rk/ϒM

Approved as per ETA-11/0190

The requirements of the European Technical Approval (ETA) must be observed

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

 | 

 | 

Application area
  • For connecting two hardened wooden elements that fit exactly without leaving a gap, in particular for structural timber constructions or load-bearing purposes.

  • Screws with a diameter of 8 mm and a thread length of 120 mm (15xd) are ideal for screwing and press gluing.

  • The underhead thread has a reduced thread pitch and enlarged external diameter and allows two wooden elements to be connected without leaving a gap.

  • For applications where a flat finish of the screw head with the wood surface is required.


For applications in utilisation classes 1 and 2 (from dia. > 4 mm)


  • High-quality surface protection zinc blue-passivated chromium(VI)-free, A3K 8 µm layer thickness

  • Suitable for use in utilisation class 1 (indoor areas) and from dia. > 4 mm in utilisation class 2 (wet areas or covered outdoor areas) in accordance with EN 1995-1-1:2010-12 + DIN SPEC 1052-100:2013-08

  • For screws from dia. 4.5 mm with zinc layer thickness 8 µm with Cr(III) passivation, the requirement of classification T2/C2 is fulfilled in accordance with prEN 14592:2017 (D)
Instructions
  • The maximum gap between the components to be joined must not exceed 2 mm

  • ASSY screws are approved for quasi-static loads

  • For optimal use of the screw, use the RW bit that fits exactly

Nominal diameter (d)

8 mm

Nominal diameter 2

8 mm

Length (l)

250 mm

Thread length (lg)

100 mm

Head type

Countersunk head

Head details

Milling pockets

Head diameter (dh)

18.5 mm

Head height (k)

2.8 mm

Internal drive

RW40

Thread type

Wood screw thread

Thread design

Partial thread with underhead thread

End milling cutter

Yes

Shaft length

108 mm

Thread form

Coarse thread

Core diameter

5.3 mm

Shape of tip

Tip with hilltop milling cutter

Angle of the tip

34 Degree

Material

Hardened steel

Surface

Zinc plated

Colour

Silver

Min./max. screw-in angle

0-90 Degree

Suitable for use in the following materials

Wood
Softwood
LVL
Solid wood panel (SWP)
Chipboard
Plywood
Board ply wood (BSP)
Glulam (BSH)
Construction timber (KVH)

Area of application

Roof
Roofer
Ceiling
Wood
Timber construction
Structural woodwork
Board doubling
Screw press gluing
Metal wood connections
Rafter purlin connection
Carrier doubling

Suitable machines

Würth BS 13 SEC
Würth BS 18-A Power

Screw requiring approval

Yes

Approval

ETA-11/0190

RoHS-compliant

Yes

Required accessory:
 
Product
Description
Quantity
PU
Price
/PU
Universal holder E 6.3 (1/4") With quick-change chuck
Universal holder E 6.3 (1/4) With quick-change chuck

HOLD-BIT-QCCHUK-1/4INX1/4IN-L51MM

x 1 pcs
RW<SUP>®</SUP> bit
RW® bit

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

The perfect bit for the new generation of ASSY screws
x 5 pcs
Cordless drill driver ABS 18 POWER M-CUBE
Cordless drill driver ABS 18 POWER M-CUBE

DRLDRIV-CORDL-(ABS 18 POWER)-2X5AH-8.4.2

MASTER M-CUBE
Very powerful, handy cordless drill driver specially designed for hard use on construction sites with a torque of 140 Nm
x 1 pcs
RW<SUP>®</SUP> bit
RW® bit

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

The perfect bit for the new generation of ASSY screws
x 10 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 Easy-/VarioScan. The packaging unit will be determined automatically.
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
Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

Price with price key representation (PSL):
The price always applies to a quantity ruled through the price key:
Price for 1 unit
Price for 100 units
Price for 1000 units
The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.
In contrast to sales packaging and secondary packaging, the disposal costs for chemical-technical products are shown separately. The breakdown of the individual costs can be found on the relevant products and also in the shopping cart, as well as in our General Terms and Conditions (GTC).
Additional accessory:
 
Product
Description
Quantity
PU
Price
/PU
WOOD CONNECTOR WC-DT-D
WOOD CONNECTOR WC-DT-D

WOCON-(WC-DT-D)-150X68X25

Dovetail connectors made of laminated beech veneer for doubling the WOOD CONNECTOR WC-DT for the installation of very large wall, roof and ceiling elements with larger wood cross-sections or increased static requirements. The increase in the anchorage surface in the milled wooden pockets increases the load capacity of the entire WOOD CONNECTOR WC-DT.
x 60 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 Easy-/VarioScan. The packaging unit will be determined automatically.
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
Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

Price with price key representation (PSL):
The price always applies to a quantity ruled through the price key:
Price for 1 unit
Price for 100 units
Price for 1000 units
The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.
In contrast to sales packaging and secondary packaging, the disposal costs for chemical-technical products are shown separately. The breakdown of the individual costs can be found on the relevant products and also in the shopping cart, as well as in our General Terms and Conditions (GTC).

Art.-no.
Cust. Mat. No.

Hazardous Material

Product information

Würth Catalogue

Datasheets()

Datasheets ()

CAD data  | 

Certificates/ Documents

 | 

 | 

Technical information
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