Welcome to Würth Aerospace Solutions For trade customers only

ASSY® 4 CSMP ZiNi timber screw Steel zinc-nickel partial thread countersunk milling pocket head

ASSY 4 CSMP ZiNi steel zn-nickel PT cs mill poc RW
SCR-CSMP-WO-RW20-(P3E)-4,5X70/38
ASSY 4 CSMP ZINI

Art.-no. 019094570
EAN 4061975613738

Prices for customers after login
ASSY® 4 CSMP ZiNi timber screw Steel zinc-nickel partial thread countersunk milling pocket head

Art.-no. 019094570

Prices for customers after login
Quantity
PU
x 200 pcs

Exclusively for trade customers

Register now and access more than 125,000 products

Universal partial-thread screw for fast, fastening of wood-wood connections (spruce) with increased risk of corrosion in wood construction. Suitable for 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


Significant reduction in the amount of force required when fastening in the screw


  • Less splitting when immersing the shank due to the displacement milling effect of the milling shank

  • Minimised risk of screw breakage due to high breaking torque

  • Reduced risk of injury from protruding metal chips due to the integration of the milling shank into the thread

  • High protection of the application tools


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


High strength values and ductility


  • Adjusted heat treatment guarantees high strength values and high ductility
Notice
  • We recommend using the Würth software or the corresponding design aids for planning and dimensioning your assembly. Dimensioning the ASSY screws can be carried out in the Würth timber construction software from a dia. of 5 mm

  • Due to mechanical loads during the screw-in process by the bit, corrosion resistance in the area of the internal drive can be affected.

  • Do not use the screw in applications with direct exposure to the elements or in humid rooms with atmospheres containing chlorine gas. If used outdoors and in rooms that are constantly exposed to high humidity, please use ASSY 4 A2 or A4 stainless steel screws and, if atmosphere is chlorine-containing, HCR stainless steel screws

  • 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

Product information

Datasheets(X)

Certificates/ Documents

 | 

 | 

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.



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


  • Five times higher corrosion protection, the zinc-nickel-plated surface chromium(VI)-free 8 µm layer thickness, compared to zinc plated yellow surfaces, 500 h according to the salt spray test according to DIN EN ISO 9227

  • For use in utilisation class 1 (interior) and from ∅ > 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)

  • Not recommended for use in wood types rich in tannic acids or boiler-pressure impregnated woods in wet areas
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

Nominal diameter (d)

4.5 mm

Length (l)

70 mm

Thread length (lg)

38 mm

Head type

Countersunk milling pocket head

Head details

Milling pockets

Head diameter (dh)

8.9 mm

Head height (k)

2.8 mm

Internal drive

RW20

Thread type

Wood screw thread

Thread design

Partial thread

Thread form

Coarse thread

Core diameter

2.7 mm

Shape of tip

Tip with hilltop milling cutter

Angle of the tip

28 Degree

Material

Hardened steel

Surface

Zinc nickel

Colour

Silver

Min./max. screw-in angle

0-90 Degree

Suitable for use in the following materials

Wood
Derived timber product
Softwood
Board ply wood (BSP)
Hardwood
LVL

Area of application

Structural woodwork
Element construction
Interior fitting
Wet areas
Timber construction
Timber panel construction
Roof
On rafter insulation

Suitable machines

Würth ABS 12-E
Würth BS 12-A Power
Würth BS 14-A Combi

Screw requiring approval

Yes

Approval

ETA-11/0190

RoHS-compliant

Yes

Required accessory:
 
Product
Description
Quantity
PU
Price
/PU
Screw-in angle 45/60 degrees

SCRINAID-SCR-ASSY-(60-45°)-200X120X30

ASSY
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
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
RW® bit

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

The perfect bit for the new generation of ASSY screws
x 10 pcs
RW® bit

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

The perfect bit for the new generation of ASSY screws
x 5 pcs
RW® bit

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

The perfect bit for the new generation of ASSY screws
x 5 pcs
Countersunk washer, washer, flat Zinc-nickel-plated

WSH-CS-(P3E)-D8,5X25MM

ASSY
Countersunk washer/washer for screws with countersunk head
x 200 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

Datasheets()

Datasheets ()

CAD data  | 

Certificates/ Documents

 | 

 | 

Technical information