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ASSY® 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 1
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 2
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 3
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 4
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 5
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 6
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 7
ASSY<SUP>®</SUP> 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head - 8

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ASSY® 4 A2 TH universal screw A2 stainless steel, black, partial thread, top head

Partial-thread screw made of high-quality austenitic A2 stainless steel with top head for universal wood-wood fastening in outdoor areas exposed to weathering

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Ideal power transmission thanks to RW recess


  • More power thanks to a larger contact surface at the bit

  • More stability, one-handed working and 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


Well-designed, unobtrusive mounting of narrow wooden components


  • Small screw head with lens-shaped rounded head for well-designed, unobtrusive mounting

  • Highly effective milling ribs prevent narrow wooden profiles from splitting


Higher breaking torque


  • Higher power transmission in hardwoods due to reinforced, asymmetrical thread flank geometry of the single-start thread

  • Better anchorage thanks to higher thread flanks


Smooth thread start ensures optimised piercing and biting of the screw


  • Minimal splitting thanks to material displacement by the dome-shaped milling elements in the tip

  • Minimal friction when screwing in the thread reduces the amount of force required


Stainless mounting for accessible wood connections in outdoor areas exposed to weathering


  • Made of austenitic, non-magnetic and non-rusting A2 stainless steel

  • Can be used in a rural or urban environment or in an industrial atmosphere without significant exposure to chlorides or SO2

  • With anti-friction coating for easy screwing
Notice
  • Austenitic stainless steel is characterised by a high degree of corrosion resistance against aggressive industrial air, sea air, tap water, river water, mine water and salt water, as well as woods containing tannic acid. It is resistant to acid to a certain extent and not suitable for atmospheres containing chlorine gas

  • We recommend using the Würth software or corresponding design aids for planning and designing your installation. Dimensioning of ASSY screws can be carried out in the Würth timber construction software from a screw dia. of 5 mm

  • ASSY 4, ASSYplus 4 and ASSYplus 4 VG chipboard screws are optimised for use in wood and engineered wood. For applications in plastic anchors where the load 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

Approved as per ETA-11/0190

The requirements of the European Technical Approval (ETA) must be observed