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ASSY® 4 CSMR double-start thread Steel zinc-plated partial thread countersunk milling head
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 1
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 2
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 3
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 4
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 5
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 6
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 7
ASSY<SUP>®</SUP> 4 CSMR double-start thread  Steel zinc-plated partial thread countersunk milling head  - 8

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ASSY® 4 CSMR double-start thread Steel zinc-plated partial thread countersunk milling head

Special partial thread screw with ribbed countersunk head with milling pockets for fastening of particleboard flooring in indoor dry or wet areas

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Available in 9 versions

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Exclusively for trade customers

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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


Easy countersinking in hard wood/soft wood with high knot content as well as hard wood fibreboards


  • Very high milling performance due to milling ribs located at the countersunk head


No over-tightening or stripping and high feed


  • Higher power transmission in hard woods due to reinforced, asymmetrical thread flank geometry of the double-start thread

  • Better anchoring thanks to higher thread flanks


Ideal for friction-free screw fitting in plastic, such as in dowels or in homogeneous highly compressed wooden materials


  • Screw bites rapidly through the continuous thread design to the tip of the screw

  • Non-spreading screwing in thanks to tip geometry without any component to reduce splitting
Notice
  • We recommend using the Würth software or the corresponding design aids for planning and dimensioning your assembly. ASSY screws can be dimensioned in the Würth timber construction software from a ∅ 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 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