ASSY<SUP>®</SUP>plus 4 CSMP universal screw Hardened zinc-plated steel, partial thread, countersunk milling pocket head - SCR-CSMP-DBIT-RW20-(A2K)-4X40/21

ASSY^®plus 4 CSMP universal screw Hardened zinc-plated steel, partial thread, countersunk milling pocket head

Name: ASSY ® plus 4 CSMP universal screw Hardened zinc-plated steel, partial thread, countersunk milling pocket head
Brand: Würth
SKU: 017811440

ASSYplus 4 CSMP steel zp PT cs milling pocket RW
SCR-CSMP-DBIT-RW20-(A2K)-4X40/21
ASSYPLUS 4 CSMP

Art.-no. 017811440

EAN 4061975502070

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ASSY^®plus 4 CSMP universal screw Hardened zinc-plated steel, partial thread, countersunk milling pocket head

Art.-no. 017811440

Prices for customers after login

Quantity

x 500 pcs

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Universal partial thread with countersunk head with milling pockets. Suitable for gap-free attachment close to edges without pre-drilling of wood-wood connections 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

Precise positioning and very clean drilling due to advanced centring drill tip

Positioning and drilling without chipping

Maximum drilling performance and precise drilling process through drilling cutting edges (similar to Forstner bits)

Precise positioning on hard surfaces without slipping thanks to centring pin

Quick screwing due to gentle start of thread

Clean countersinking in softwood or wood material

Easy countersinking of screw head in wood thanks to optimised milling pockets

No chipping in coated chipboards due to improved milling effect and increased number of milling pockets up to ∅ 4.5 mm

Perfect fit of 90° head in fitting parts with metal countersinks

Maximum reliability of the screw connection due to asymmetrical single thread

Optimal matching of drill tip and thread geometry

Excellent anchoring in wood due to asymmetrical arrangement of thread flanks

Notice

Do not use the screw in applications with direct exposure to the elements or in humid rooms with atmospheres containing chlorine gas. Please use ASSYplus 4 stainless steel screws for outdoor applications and rooms with constant high humidity

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.

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

For wood-wood connections designed to pull together

A wood-wood connection designed to pull together is possible owing to partial thread starting immediately after the shank. The thread in this case is positioned entirely in the lower second component.

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

High-quality surface protection zinc blue passivated chromium(VI)-free, up to ∅ 4 mm A2K 5 µm, from ∅ 4.5 mm A3K 8 µm layer thickness

Suitable for use in utilisation class 1 (interior) and from ∅ > 4 mm in utilisation class 2 (wet area or covered outdoor area) according to EN 1995-1-1:2010-12 + DIN SPEC 1052-100:2013-08

For screws from ∅ 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

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

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

If countersunk head screws are used for a metal-to-wood mounting, the metal to be connected must be provided with suitable countersunk holes

For a load-bearing wood-metal connection, ASSY screws must be tightened to a specific torque value. Tightening torque = required prevailing torque x 1.2 < 90% of the breaking torque


Nominal diameter (d)	4 mm
Length (l)	40 mm
Thread length (lg) (l_g)	21 mm
Screw-thread length with drill tip (b) (b)	24.5 mm
Head type	Countersunk head
Head details	Milling pockets
Head diameter (d_h)	7.8 mm
Head height (k)	2.5 mm
Internal drive	RW20
Thread type	Wood screw thread
Thread design	Partial thread
Design	With shaft
Thread form	Single start thread
Core diameter	2.5 mm
Shape of tip	Drilling tip
Material	Hardened steel
Surface	Zinc plated
Max. screw-in angle	90 Degree
Min. screw-in angle	0 Degree
Suitable for use in the following materials	Board ply wood (BSP), Wood, Derived timber product, Hardwood, LVL, Softwood, Construction timber (KVH)
Area of application	Interior fitting, Body, Store construction, Exhibition stand construction, Furniture
Approval	ETA-11/0190
Product weight (per item)	2.238 g
RoHS-compliant	Yes