103-32500 - Cleveland Wheels and Brakes Cadmium Aerospace Bolt

103-32500 – Textron Aviation OEM Cleveland Aerospace Bolt

Available now on the Airparts.aero Marketplace.

Overview

The Textron Aviation 103-32500 is a genuine OEM, flight-critical engine mount bolt, engineered for the demanding requirements of various Beechcraft Bonanza, Baron, and King Air aircraft. This is not a standard AN bolt; it is a proprietary, high-strength structural fastener designed specifically for securing the engine shock mount assemblies to the engine mount frame. Fabricated from a high-tensile strength steel alloy and featuring both a drilled head and a drilled shank, this bolt is designed for redundant positive locking, ensuring the absolute integrity of the engine installation under all flight conditions.

Key Features

• Primary Structural Application: Its sole purpose is to serve as a primary fastener for the engine shock mount assemblies. The integrity of this bolted joint is essential for holding the powerplant securely to the airframe while isolating vibrations.
• Dual Positive Locking Provisions: This bolt is engineered for maximum security with two separate locking features:
  1. Drilled Head: The hexagonal head is cross-drilled to allow for the installation of safety wire, providing a positive lock that prevents the bolt from rotating.
  2. Drilled Shank: The threaded shank is cross-drilled to accept a cotter pin, which secures a castellated nut and prevents it from backing off.
• High-Tensile Strength Steel: Forged from a high-strength, heat-treated steel alloy, providing the exceptional tensile and shear strength required to handle the immense static and dynamic loads of the engine.
• Corrosion-Resistant Plating: Plated with a durable cadmium finish to provide robust protection against corrosion from moisture and the harsh, high-temperature environment of the firewall-forward section.
• Genuine Textron OEM Part: As a genuine factory component, it guarantees conformance to the stringent material specifications, heat treatment, and quality control standards required for this flight-critical application.

Technical Specifications

• Part Number: 103-32500
• Component Type: Engine Mount Structural Bolt
• Material: High-Tensile Steel Alloy
• Finish: Cadmium Plated
• Head Style: Drilled Hexagonal (Hex Head)
• Shank Feature: Drilled for cotter pin installation.
• Certification: FAA Production Approval

Aircraft Compatibility

The 103-32500 is a cornerstone of the engine installation hardware across a massive portion of the Beechcraft fleet, from high-performance pistons to legendary turboprops. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.

• Common Aircraft Models:
  • Beechcraft Bonanza: 35, 36 Series
  • Beechcraft Baron: 55, 58 Series
  • Beechcraft King Air: 90, 100, 200 Series

Applications

The 103-32500 has one of the most critical applications on an aircraft:

• Engine Mount Installation: Used as one of the primary bolts that passes through the engine mount frame, the elastomeric shock mounts, and the engine mounting lugs.
• Mandatory Inspection & Replacement Item: These bolts are subject to rigorous inspection for any signs of corrosion, stretching, or damage. They are often subject to life limits or mandatory replacement during engine changes or after a propeller strike event.

Why Choose 103-32500?

The engine mount bolts are subjected to every force the engine and propeller produce. A failure of one of these bolts would be catastrophic. The Textron Aviation 103-32500 is the proprietary bolt engineered with redundant locking features for the ultimate in security. Using a genuine OEM part is the only way to ensure the fastener has the certified material strength, proper heat treatment, and quality control demanded by this application. The use of any non-certified or standard hardware in this location is strictly forbidden and would create an unairworthy and extremely dangerous condition.

Order Your 103-32500 Engine Mount Bolts Now

Ensure the safety and structural integrity of your aircraft with genuine, flight-critical OEM hardware. Visit Airparts.aero to order your Textron Aviation 103-32500 engine mount bolts today.

The 103-32500 bolt's dual-drilled design provides a "belt and suspenders" approach to safety that is essential for engine mounting. The primary securing force is the clamp load generated by properly torquing the castellated nut. The cotter pin through the nut provides the first positive lock, preventing the nut from backing off. The drilled head for safety wire provides a second, redundant layer of security. Safety wiring the bolt head to the engine mount structure or an adjacent bolt prevents the bolt itself from rotating, which is a possible, though rare, failure mode. This dual system ensures the joint remains secure even in the face of the most extreme vibration and load conditions, a testament to the conservative design philosophy required for flight-critical structures.

Note: This is a flight-critical structural component. It must be installed by a certified A&P mechanic in strict accordance with the current Textron Aviation maintenance manual. It must be used with a corresponding high-strength castellated nut and a new cotter pin. The nut must be torqued to the specified value, and the bolt head must be properly safety wired.