Lycoming Hex Plain Nut STD-2090
Condition NE — Condition disclosed — is shown up front on this listing, along with the exact price, current availability, and what certification paperwork ships with the part, so you can confirm fit and airworthiness before you buy. Full specifications and answers to common questions are below.
What does “New” condition mean?
Price check pending — request a quote and we will confirm price and stock.
Request certification documents (8130-3 / EASA Form 1 / C of C)
Description
Overview
For Lycoming O-320-D3G engines and a range of other Lycoming powerplants, the **Lycoming STD-2090 lockwasher** serves a fundamental role in maintaining the integrity of bolted assemblies. This small but critical component is designed to prevent fasteners from loosening due to vibration, thermal cycling, and dynamic loads inherent in aircraft engine operation. By providing a spring-like action and resistance to rotation, the STD-2090 lockwasher helps ensure that nuts and bolts remain securely torqued, contributing directly to engine reliability and flight safety. It is a standard hardware item, essential wherever specified in Lycoming engine parts catalogs and maintenance manuals.Specifications
- Part Number: STD-2090
- Type: Lockwasher (likely split-ring or spring washer type, commonly used in Lycoming applications)
- Weight: 0.04 lb
- Dimensions:
- Length: 0.75 inches
- Width: 0.75 inches
- Height: 0.38 inches
- Material: (Specific material not specified, but typically hardened steel, often plated for corrosion resistance in engine environments)
- Finish: (Specific finish not specified, but commonly zinc or cadmium plated)
Aircraft Compatibility
The Lycoming STD-2090 lockwasher is a widely applicable standard part across numerous Lycoming engine models, ensuring secure fastening in various critical and non-critical applications. Its usage is determined by the specific fastener and assembly requirements outlined in the respective engine's Illustrated Parts Catalog (IPC) and overhaul manuals. Operators and maintenance personnel should always consult the official Lycoming documentation for precise applicability. This STD-2090 lockwasher is known to be compatible withAI disclosure: this product description and its specifications were generated with AI assistance from the manufacturer's Illustrated Parts Catalog.
Specifications
| Part number | STD-2090 |
|---|---|
| Manufacturer | Lycoming |
| Condition | NE |
| Airworthiness | Condition disclosed |
| Country of origin | — |
| Lead time | days |
Frequently asked
Does the Lycoming Hex Plain Nut STD-2090 include certification paperwork?
This item is supplied as "Condition disclosed" rather than with full 8130-3 traceability — normal for some condition codes, and it does not mean the part is unusable, only that the paperwork profile differs. Check the listing for exactly what documentation is included, and request any available records before you purchase if your installation requires them.
What condition is this part?
This part is listed in condition NE — Condition disclosed. Condition codes describe how a part reached its current state (for example new, overhauled, serviceable, repaired, or as-removed) and directly affect what paperwork ships with it and how it should be installed. See the Glossary for the full definition of every condition code we use.
How fast does it ship?
This item is in stock and ships promptly, usually the same or next business day once your order and payment are confirmed. Exact transit time depends on your shipping method and destination and is shown at checkout. If your aircraft is grounded, AOG expedited handling is available on request — no phone tree required.
Can I return it?
You may return this item within 30 days of delivery if it is unopened, uninstalled, and in its original packaging. Items that have been installed, powered on, opened hazmat, or separated from an attached 8130-3 tag are non-returnable because their airworthiness status can no longer be confirmed once removed from the part. See our Returns policy for the full process.
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