63-1658-501

WASHER
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About this product
The 63‑1658‑501 is a precision‑machined flat washer made from heat‑treated 17‑4 PH stainless steel. It distributes bolt or nut load evenly, resists corrosion in harsh aviation environments, and carries FAA 8130‑3 certification for full traceability in U.S. and European airworthiness records.
63-1658-501 Datasheet
UOM: EA
Stock Location: Dubai
Hazardous Item: Non-Hazardous Item
Lead Time: Stock
Certification: FAA 8130-3
8130/EASA Eligible: Yes
PRODUCT DESCRIPTION

63-1658-501

  • 17‑4 PH Stainless Steel: High strength and excellent corrosion resistance.

  • Hardness Rated H900: Provides wear resistance under cyclic loading.

  • Passivated Finish: Prevents oxidation in moisture, fuel, and hydraulic fluid exposure.

  • Low Profile Design: Minimal added stack height for tight installation envelopes.


  • Distributes bolt loads on strut and actuator fittings during taxi and landing.

  • Ensures even clamp force on engine mount brackets under vibration.

  • Prevents fastener pull‑through in thin‑gauge electronics trays.

  • Supports banjo‑bolt connections in fluid‑control manifolds on ground rigs.


  • Can it be reused after removal?

Yes, inspect for flatness and corrosion; if undamaged, it can be reused without compromising performance.

  • How do I inspect the washer during maintenance?

Check for cracks, pitting, or deformation and verify thickness with calipers if wear is suspected.

  • What environmental conditions can it withstand?

Designed for salt‑spray, humidity, hydraulic fluids, and aircraft‑grade cleaning solvents per RTCA/DO‑160.


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