0523307-1 – Textron Aviation OEM Spacer
Available now through the AirParts Aero marketplace.
Overview Section
The Textron Aviation 0523307-1 is a precision-engineered OEM Structural Spacer primarily utilized in the landing gear and flight control assemblies of Cessna single-engine and light-twin aircraft.1 As an authentic Textron part, it is manufactured to the exact tolerances required to maintain proper mechanical clearance and load distribution between moving components.
The 0523307-1 serves as a critical "shimming" or "stand-off" component, ensuring that bolts and pivot pins are correctly tensioned without binding the moving surfaces they support.2 Typically found in the nose gear torque link or main gear trunnion assemblies, this spacer is vital for eliminating "play" or mechanical slop, which can lead to vibration and accelerated wear of expensive structural components.
Key Features Section
OEM Structural Integrity: Manufactured by Textron Aviation to the original Type Certificate (TC) standards, ensuring material hardness and dimensional accuracy that aftermarket "will-fit" parts cannot guarantee.
Corrosion-Resistant Finish: Treated with an aerospace-grade cadmium plating or anodized finish (depending on the specific revision) to prevent galvanic corrosion when placed between dissimilar metals.
Precision-Ground Faces: The end surfaces are ground to a high degree of parallelism, ensuring that clamping force is distributed evenly across the mating surfaces.
Vibration Dampening: By maintaining the exact spacing required in pivot joints, it prevents harmonic oscillations—such as "nose wheel shimmy"—that can damage the airframe.
High-Load Capacity: Constructed from high-strength alloy steel or aluminum (per original blueprint specs) to withstand the high-impact loads experienced during landing and taxi operations.
Technical Specifications Section
| Specification | Detail |
| Part Number | 0523307-1 |
| Manufacturer | Textron Aviation (Cessna) |
| Material | High-Strength Alloy (Per OEM Spec) |
| Inner Diameter (ID) | Sized for specific AN or NAS bolt fitment |
| Outer Diameter (OD) | Optimized for bearing or bushing interface |
| Finish | Cadmium Plated or Anodized |
| Application | Landing Gear / Control Surface Pivot |
| Weight | Approx. 0.05 lbs (Varies by material revision) |
Aircraft Compatibility Section
The 0523307-1 is a high-utilization component found across the Textron/Cessna fleet in the AirParts Aero inventory:
Cessna 100 Series: Common in the nose gear and steering linkages of the Cessna 172 (Skyhawk), 182 (Skylane), and 206 (Stationair).
Cessna 200 Series: Utilized in the landing gear assemblies of the Cessna 210 Centurion.
Textron Light Twins: Found in specific serial number ranges of the Cessna 310 and 337 Skymaster.
Technical Applications & Safety
In the landing gear ecosystem, a spacer like the 0523307-1 acts as the "silent protector" of the airframe. If a spacer is worn, missing, or replaced with a standard hardware-store washer, the bolt may "bottom out" on its threads before the joint is tight, or conversely, it may crush the linkage, preventing free movement.
Safety Warning: Spacers should be inspected during every 100-hour or Annual inspection for signs of "fretting" (black or silver dust) or "mushrooming" at the edges. A damaged spacer is often the primary cause of uncommanded nose wheel steering oscillations.
The engineering value of the 0523307-1 lies in its Mechanical Advantage and Tolerance Stacking Control. In aerospace design, "Tolerance Stacking" occurs when multiple parts are bolted together; small errors in each part can add up to a significant misalignment.3 The 0523307-1 is manufactured to a "minus-only" tolerance, ensuring it never exceeds the maximum allowable width for the landing gear clevis.
Furthermore, the ID (Inner Diameter) is precision-bored to be a "Close-Fit" on the mating bolt. This ensures that the bolt carries the shear loads while the spacer provides the necessary "clamping area" to prevent the bolt from "egging out" the holes in the aluminum landing gear strut. By using the genuine Textron 0523307-1 through AirParts Aero, you ensure that the torque applied to the nut is converted into clamping force rather than friction against a poorly sized aftermarket spacer.
Installation & Maintenance Addendum
Orientation: Ensure the faces are clean and free of burrs before installation.
Lubrication: If used in a pivoting joint, apply a light film of AeroShell 22 or equivalent to the outer surface, but keep the end faces dry to ensure proper clamping.
Replacement: Always replace the spacer if the thickness has been reduced by more than 0.002" due to wear, as this will affect the rigging of the landing gear.