95-110021-1 – Textron Aviation OEM Spar Fitting Flat Washer
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Overview
The Textron Aviation 95-110021-1 is a genuine OEM, flight-critical spar fitting washer of a specific, controlled thickness. It is an indispensable structural component for the wing-to-fuselage attachments on Beechcraft Bonanza and Baron series aircraft. This is not a standard washer; it is a precision-manufactured, load-bearing shim washer whose exact thickness is a critical engineering parameter. Fabricated from heat-treated, high-tensile steel, its primary function is to provide a perfect bearing surface while achieving a precise axial tolerance, or "stack-up," for the main spar attachment bolts. This ensures that the immense clamping forces required to secure the wing are distributed evenly and that the joint is assembled without residual stress.
Key Features
- Primary Structural Component: Specifically designed for the main wing spar attachment joint, which transfers all aerodynamic lift, G-forces, and turbulence-induced stress from the wing to the primary fuselage structure.
- Heat-Treated Steel Alloy: Manufactured from a high-strength steel alloy (typically 4130 or 4140) that is quenched and tempered to a specific Rockwell hardness. This ensures the washer can withstand immense compressive loads without yielding or deforming, which would lead to a loss of bolt preload.
- Precision-Controlled Thickness: The "-1" designation signifies a specific, non-standard thickness (0.032 inches). This precision thickness is used by maintenance technicians and the factory to accommodate manufacturing tolerances and achieve the exact design specification for the wing joint.
- Corrosion-Resistant Plating: Plated with a durable cadmium finish per QQ-P-416, Type II, Class 2. This plating provides sacrificial corrosion protection for the underlying high-strength steel, ensuring the long-term integrity of the wing attach point.
- Genuine Textron OEM Part: As the genuine factory component, it guarantees conformance to the proprietary material, heat treatment, dimensional, and plating specifications required by the aircraft's Type Certificate. For a component this critical, there is no substitute.
Technical Specifications
- Part Number: 95-110021-1
- Component Type: Structural Wing Spar Fitting Flat Washer / Shim
- Material: Heat-Treated High-Tensile Steel Alloy (e.g., 4130/4140)
- Finish: Cadmium Plated, Type II, Class 2
- Nominal Screw/Bolt Size: 3/4 inch
- Dimensions:
- Inside Diameter (I.D.): Approximately 0.765 inches
- Thickness: 0.032 inches
- Hardness: Specified Rockwell hardness range to ensure proper strength.
- Certification: FAA Production Approval with full material and process traceability.
Aircraft Compatibility
The 95-110021-1 is a specified OEM washer for the wing spar attachment on some of the most successful and legendary piston aircraft ever built.
- Primary Aircraft Models
- - Beechcraft Baron: B55, E55, 58 or G58 Series
Applications
The 95-110021-1 has a singular, profoundly important application:
- Wing Spar Joint Shimming: Used during the installation of wing attach bolts to achieve the precise dimensional stack-up required by the engineering drawings. It ensures a perfect fit, eliminating any gaps that could lead to movement or improper loading of the joint.
- Mandatory Inspection & Replacement: This component must be meticulously inspected for any signs of cracking, corrosion, or deformation any time the wing bolts are removed. It is a mandatory replacement item if any defects are found.
Why Choose 95-110021-1?
The joint connecting the wing to the fuselage is the most critical structural connection on any aircraft. Its integrity is absolute. The 95-110021-1 washer is an engineered part of this system, providing a specific thickness for a specific fit. Using a genuine Textron Aviation OEM part is the only way to ensure the component has the certified material strength and precise thickness to handle the calculated flight loads. The use of any non-approved hardware or a washer of incorrect thickness in this location would be a gross violation of safety and airworthiness standards.
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- Meta Title: 95-110021-1 Textron Beechcraft Wing Spar Shim Washer | Bonanza, Baron | Airparts.aero
- Meta Description: Purchase the genuine Textron Aviation 95-110021-1, a flight-critical, high-strength steel washer of a specific .032" thickness for the wing spar attachment on Beechcraft Bonanza and Baron aircraft.
- SEO and Plain Text Keywords: 95-110021-1, Textron Aviation parts, Beechcraft parts, Bonanza parts, Baron parts, wing spar washer, structural washer, shim washer, flight critical hardware, OEM Beechcraft parts, Airparts.aero.
Order Your 95-110021-1 Wing Spar Washers Now
Ensure the absolute structural integrity of your aircraft with genuine, factory-certified, flight-critical hardware. Visit Airparts.aero to order your Textron Aviation 95-110021-1 wing spar fitting washers today.
SEO-Enhanced Addendum
The 95-110021-1 washer is a critical tool for managing tolerance stack-up in the wing-to-fuselage joint. During manufacturing, the wing spar fitting and the fuselage carry-through structure are each machined with an allowable dimensional tolerance. When these two parts are brought together, the sum of their individual tolerances can result in a gap that is slightly larger than a standard washer can accommodate while still achieving the proper preload on the bolt. The 95-110021-1, with its specific and tightly controlled thickness, is used as a shim washer to fill this gap precisely. This ensures that when the wing bolt is torqued, the clamping force is applied perfectly, creating a rigid friction joint with zero movement and no residual stress from pulling a gap closed. This meticulous attention to fit is fundamental to the aircraft's structural fatigue life.
Note: This is a flight-critical structural component. It must only be used in the application specified by the Textron Aviation maintenance and structural repair manuals. Installation is part of a major maintenance procedure and must be performed by a certified A&P mechanic with experience in heavy structural aircraft maintenance. The selection of the correct thickness washer for a specific joint is a critical measurement and assembly step.
