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Washer Head Screw ASSY® 4 WH II Zinc Plated 8mm Diameter Variant-1 Wurth

BRAND: Wurth
SKU: 177580160
$135.50 List price: $170.40
50 PCS ($2.71 per PCS)
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The ASSY® 4 WH II washer head screw is designed for reliable wood fastening, featuring a zinc-plated finish and a nominal diameter of 8 mm.
Technical Specifications
  • Nominal diameter: 8 mm
  • Length: 160 mm
  • Thread length: 80 mm
  • Head type: Washer head II
  • Head diameter: 18.4 mm
  • Head height: 2.5 mm
  • Internal drive: RW40
  • Thread type: Wood screw thread
  • Thread design: Partial thread
  • End milling cutter: Yes
  • Thread form: Coarse thread
  • Core diameter: 5.3 mm
  • Shape of tip: Tip with hilltop milling cutter
  • Angle of the tip: 34 degrees
  • Material: Hardened steel
  • Surface: Zinc plated
  • Colour: Silver
  • Max screw-in angle: 90 degrees
  • Min screw-in angle: 0 degrees
  • Suitable materials: Wood, Derived timber product, Softwood, Board plywood (BSP), Hardwood, LVL
  • Additional accessory: Bit lock
  • Approval: ETA-11/0190
  • RoHS-compliant: Yes
  • Dimensions (H x L x W): 2.5mm x 160mm x 18mm
  • Weight: 0.15 kg
Key Features
  • Universal partial-thread screw with washer head for wood-wood fastening.
  • Suitable for 90° or inclined screw connections in structural wood construction.
  • Ideal power transmission thanks to RW drive.
  • Larger contact area at the bit for more power.
  • Tight-fit recess for precise positioning and one-handed working.
  • Compatibility with previous AW drive.
  • Visually appealing screw connection with option for countersinking.
  • High head penetration values and strong combination of wooden components.
  • Reduced force required when fastening due to milling shank displacement effect.
  • Minimized risk of screw breakage due to high breaking torque.
  • Reduced risk of injury from protruding metal chips.
  • High protection of application tools with no over-tightening or stripping.
  • Reinforced asymmetrical thread flank geometry for higher power transmission in hardwoods.
  • Smooth thread start ensures optimized recessing.
Professional Installation Requirements
  • Installation by a professional or experienced tradesperson is recommended to ensure correct fastening and structural integrity.
Applications
  • Structural woodwork
  • On rafter insulation
  • Element construction
  • Timber construction
  • Timber panel construction
  • Roof
Standards & Compliance
  • Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
  • RoHS-compliant ensuring reduced hazardous substances.
  • Durable zinc plating extends product life reducing waste.
Warranty Information

Warranty as per Wurth standard terms and conditions.

Available Now

Available for immediate purchase, ideal for structural wood construction and timber fastening applications.

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