ASSY <SUP>®</SUP> 3.0 HCR chipboard screw - SCR-CS-WO-HCR-AW20-4X50/34

ASSY <SUP>®</SUP> 3.0 HCR chipboard screw - SCR-CS-WO-HCR-AW20-4X50/34 - 1

ASSY <SUP>®</SUP> 3.0 HCR chipboard screw - SCR-CS-WO-HCR-AW20-4X50/34 - 2

ASSY <SUP>®</SUP> 3.0 HCR chipboard screw - SCR-CS-WO-HCR-AW20-4X50/34 - 3

ASSY ^® 3.0 HCR chipboard screw

Name: ASSY ® 3.0 HCR chipboard screw
Brand: Würth
SKU: 018094050

SCR-CS-WO-HCR-AW20-4X50/34

Art.-no. 018094050

EAN 4047376907294

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ASSY ^® 3.0 HCR chipboard screw

Art.-no. 018094050

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x 250 pcs

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Especially suitable for screwing in wooden elements in aggressively corrosive environments. Material no. 1.4539

Minimal splitting effect, especially when screwing in near the edge

Tip with ring thread

Short screw-in times

Asymmetrical coarse thread

Countersunk head with AW drive

Corrosion-resistant HCR stainless steel (material no. 1.4539)

Notice

Pre-drilling to the core diameter in solid hard woods

ASSY 3.0 chipboard screws are optimised for use in wooden materials. Use in plastic anchors may cause a reduction in the load-bearing capacity. Therefore, we recommend only using screws without optimised thread tips (drill tip, mating thread, ring thread, serrated edge, self-clearing groove, etc.) in plastic dowels, e.g. Würth ASSY D, prefix 0151 (countersunk head) and prefix 0153 (pan head).

When using these screws, the ETA-11/0190 specifications must be observed.

Available work documents:

Timber dimensioning software, load tables and detailed processing instructions can be found on the service page www.wuerth.de/assy.

ETA-11/0190

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

ASSY HCR 3.0 are made of highly corrosion-resistant steel, material no. 1.4539 (corrosion resistance class IV, Appr. No. Z-30.3-6), and are suitable and approved for use in the following areas:

For components in stables

In woods with a high tannic acid content

Particularly good resistance to very aggressive media such as phosphoric acid, sulphuric acid and hydrochloric acid media, high resistance to pitting and stress fracture corrosion

Instructions

Screw-in angle 0° to 90°. For coniferous wood or wood-based materials made from softwood, the screw connection is made without pre-drilling. To reduce the edge distances, a pre-drilled hole can be made according to the core diameter. When screwing into hardwood, pre-drill according to ETA-11/0190.


Nominal diameter (d)	4 mm
Length (l)	50 mm
Head type	Countersunk head
Head diameter (d_h)	8 mm
Head height (k)	2.5 mm
Internal drive	AW20
Thread type	Wood screw thread
Thread design	Partial thread
Thread form	Single start thread
Thread length (lg)	34 mm
Core diameter	2.5 mm
Shape of tip	Tip with ring thread
Angle of the tip	30 Degree
Material	Stainless steel, 1.4539, X1NiCrMoCu25-20-5
Surface	Plain
Min./max. screw-in angle	0-90 Degree
Product weight (per item)	2.650 g
Suitable for use in the following materials	Board ply wood (BSP), Wood, Derived timber product, Hardwood, LVL, Softwood
Area of application	Outdoors, Façades, Wet areas, Timber construction, Ocean climate, Casing, Play equipment, Board walk, Terrace, Fence
Approval	ETA-11/0190
Screw requiring approval	Yes
RoHS-compliant	Yes

The uses of different stainless steel grades are presented in the ISER table (German authority monitoring different environmental conditions for stainless steel, leaflet 828). Stainless steels (e.g. material no. 1.4016) are recommended for use only in conditions with a climate reminiscent of rural areas, and even then only with specific restrictions. We recommend only austenitic stainless steels for outdoor use and we recommend taking environmental conditions into account.
Steel grade Short name	Material no		Environment
			Rural			City			Industry			Sea coastal area
			N	M	H	N	M	H	N	M	H	N	M	H
X1NiCrMoCuN25-20-7	1.4529	Würth HCR (0180 904...)	+	+	+	+	+	+	+	+	+	+	+	+
X1NiCrMoCu25-20-5	1.4539	Würth HCR (0180 940...)	x	x	x	x	x	x	x	x	+	x	x	+
X5CrNiMo17-12-2	1.4401/1.4578	Würth A4 (0169 015...)	x	x	x	x	+	+	+	+	(+)	+	+	(+)
X5Cr-Ni18-10	1.4301/1.4567	Würth A2 (0166, 0180, 0181)	+	+	+	+	+	(+)	(+)	(+)	-	+	(+)	-
X6Cr17	1.4006	Many similar products from competitors	(+)	(+)	(+)	(+)	-	-	(+)	-	-	-	-	-
Stainless steels in different environmental conditions (leaflet 828)
N= lowest corrosion stress in a similar environment, characterized by, for example, low temperature and low humidity M{= moderate corrosion stress in a similar environment H= the highest corrosion stress in a corresponding environment, characterized by, for example, constantly high humidity, high ambient temperature and very high levels of air pollution x= meets the requirements in principle, but the use of cheaper steels may also be considered += probably the best choice of material in terms of corrosion resistance and cost (+)= adequate performance as long as certain precautions are taken. Smooth surfaces and regular cleaning are required. -= severe corrosion expected