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ASSY® 4 BP rear panel screw Steel zinc plated full thread back panel head

ASSY 4 BP steel zinc plated FT rear wall head RW
SCR-BCKPAN-RW20-(A2K)-4X30/27
ASSY 4 BP

Art.-no. 016744030
EAN 4061975610140

Prices for customers after login
ASSY® 4 BP rear panel screw Steel zinc plated full thread back panel head

Art.-no. 016744030

Prices for customers after login
Quantity
PU
x 500 pcs

Exclusively for trade customers

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Full-thread screw with large back panel head for mounting thin back panel plates, e.g. hard fibre into the side of the panel edge of units in a dry inner 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


Powerful connection of e.g. thin fibreboards for furniture back panels


  • Large flat-shaped washer head for a strong connection of e.g. thin fibreboards in furniture back panels

  • Visually appealing flat screw connection

  • Large head diameter with small thread diameter for a strong connection


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
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 combi 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

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Application area

For steel-wood connections designed for pull-out forces and for fastening thin plate materials


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 5 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
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

Material

Hardened steel

Surface

Zinc plated

Nominal diameter (d)

4 mm

Length (l)

30 mm

Thread length (lg)

27 mm

Head diameter (dh)

9.4 mm

Head height (k)

1.8 mm

Internal drive

RW20

Approval

ETA-11/0190

Suitable for use in the following materials

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

Area of application

Furniture, Body, Back board

Head type

Rear wall head

Core diameter

2.5 mm

Thread type

Wood screw thread

Thread design

Full thread

Thread form

Coarse thread

Shape of tip

Tip with hilltop milling cutter

Max. screw-in angle

90 Degree

Min. screw-in angle

0 Degree

RoHS-compliant

Yes

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
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The article number is made up of the following: VVVVAAABBB
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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:
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005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:
VVVVAAABBB
04076
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Product information

Datasheets()

Datasheets ()

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Certificates/ Documents

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Technical information