704090

WASHER
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About this product
The 704090 is a factory-new aircraft washer supplied with traceable paperwork. As a plain washer, its job is to spread the clamp load of a nut or bolt, protect mating surfaces from damage, and help keep the fastener stack at the correct height. When used as specified in the aircraft IPC/AMM, it helps preserve joint integrity under vibration, thermal cycles and routine handling.
704090 Datasheet
Lead Time: Stock
UOM: EA
Hazardous Item: Non-Hazardous Item
8130/EASA Eligible: Yes
International Shipping: Available
PRODUCT DESCRIPTION

704090

  • Load distribution: Spreads clamp force to reduce crushing or deformation of panels and soft mating surfaces.

  • Surface protection: Prevents bolt heads and nuts from embedding into the substrate and damaging coatings.

  • Consistent thickness control: Tight dimensional tolerances maintain correct stack height and predictable preload.

  • Durable workmanship: Produced to aviation quality standards to withstand vibration and routine handling.


  • Distributes clamp load under screws or bolts that secure external skins and fairings.

  • Protects bracket faces when mounting supports and fixtures to the structure.

  • Sits under fasteners that secure trays and LRUs to avoid damage to equipment housings.

  • Maintains correct stack height in non-primary control linkages and small pivots.


  • What paperwork is supplied with the washer?

It ships with trace documentation showing lot/trace data and provenance suitable for maintenance records.

  • Can I reuse a washer after removal?

Washers can be reused if undamaged, but follow the AMM: replace if bent, corroded, or if the maintenance data requires new hardware after disassembly.

  • Are there special storage requirements?

Store in original packaging in a clean, dry area away from corrosive chemicals and extreme temperatures to protect the finish and paperwork.


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