ASSY^® 4 CSMP universal screw Zinc-plated steel full thread 90° milling pocket head

Name: ASSY ® 4 CSMP universal screw Zinc-plated steel full thread 90° milling pocket head
Brand: Würth
SKU: 0190080251

ASSY 4 CSMP steel zinc ptd. FT cs mill. pocket RW
SCR-CSMP-WO-RW40-(A3K)-8X250/190
ASSY 4 CSMP

Art.-no. 0190080251

EAN 4065746435369

All versions

Specification

Universal full-thread screw for fast, permanent fixing of wood-wood connections or metal-wood fastening in furniture construction, interior construction or wood construction 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

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. Use the Würth timber construction software for dimensioning of ASSY screws from a diameter of 5 mm

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 contains chlorine, 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

Application

Application area

For steel-wood connections designed for tensile forces

The full thread starting immediately below the head allows for e.g. fitting-wood or sheet material-wood connections designed for tensile forces with high load-bearing capacity. Greater screw pull-out force is achieved by the maximum thread length.

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 a ∅ > 4 mm in utilisation class 2 (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

ASSY screws are approved for quasi-static loads

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

Full-thread screws are suitable for secure mounting of fittings or thin materials. The screw length to be selected should be less than the plate thickness of substrate the screw is to be driven in

Technical information


Nominal diameter (d)	8 mm
Length (l)	250 mm
Thread length (lg)	190 mm
Head type	Countersunk milling pocket head
Head details	Milling pockets
Head diameter (d_h)	15 mm
Head height (k)	4.9 mm
Internal drive	RW40
Thread type	Wood screw thread
Thread design	Partial thread
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, Derived timber product, Softwood, Board ply wood (BSP), Hardwood, LVL, Glulam (BSH)
Area of application	Universal, Structural woodwork, Element construction, Interior fitting, Roof, Timber construction, Timber panel construction
Suitable machines	Würth BS 13 SEC, Würth BS 18-A Power, 0 - not applicable
Screw requiring approval	Yes
Approval	ETA-11/0190
RoHS-compliant	Yes