130909B39 - Textron Aviation OEM NDT Magnetic Particle Inspected Aerospace Bolt

130909B39 – Textron Aviation OEM NDT Magnetic Particle Inspected Aerospace Bolt

Available now on the Airparts.aero Marketplace.

Overview

The Textron Aviation 130909B39 is a genuine OEM, flight-critical structural bolt subjected to rigorous Non-Destructive Testing (NDT) to ensure absolute material integrity. This fastener is specifically designated for high-stress, high-fatigue applications within the airframe structure of various Beechcraft King Air models. The bolt's key feature is its mandatory Magnetic Particle Inspection (MPI), a process designed to detect minute surface and near-surface cracks or flaws that are invisible to the naked eye. Manufactured from ultra-high-strength steel, this bolt is engineered to provide the utmost reliability in the most critical structural joints of the aircraft.

Key Features

• Non-Destructive Tested (NDT): Each bolt is subjected to Magnetic Particle Inspection (MPI) post-manufacturing. This quality assurance process guarantees the fastener is free from microscopic cracks, seams, or material inclusions that could lead to fatigue failure in service.
• Ultra High-Strength Steel Alloy: Fabricated from a premium, aircraft-grade VAR (Vacuum-Arc Remelt) steel alloy, such as H-11 or similar, and heat-treated to achieve an exceptionally high tensile strength, often in the range of 180,000 to 200,000 PSI.
• Engineered for Critical Joints: Specifically designed for use in primary structural applications where the joint's failure would be catastrophic, such as landing gear assemblies, wing attach points, and control surface hinges.
• Superior Corrosion Protection: Plated with a robust, multi-layer finish (typically a diffused nickel-cadmium plating) that provides exceptional corrosion resistance and prevents hydrogen embrittlement, a common failure mode in high-strength steels.
• Genuine Textron OEM Part: As a genuine factory component, it guarantees conformance to the exact material, heat treatment, NDT inspection, and dimensional specifications required by the aircraft's original Type Certificate. There is no substitute for this level of quality assurance.

Technical Specifications

• Part Number: 130909B39
• Component Type: High-Strength, NDT Structural Bolt
• Inspection Method: Magnetic Particle Inspection (MPI) per ASTM E1444
• Material: High-Tensile VAR Steel Alloy (e.g., H-11)
• Finish: Diffused Nickel-Cadmium Plating (or equivalent high-performance coating)
• Head Style: Hexagonal (Hex Head)
• Nominal Diameter: 3/8 inch
• Grip Length (Unthreaded Shank): Approximately 2.438 inches
• Thread Specification: 3/8-24 UNF-3A
• Certification: FAA Production Approval with full NDT traceability.

Aircraft Compatibility

The 130909B39 bolt is a specialized component specified for use in some of Textron Aviation's most successful turboprop aircraft. Its application is precise and mandatory as per the manufacturer's documentation.

• Primary Aircraft Models:
  • Beechcraft King Air: C90, E90, F90, 100, A100, B100, 200, B200 series.
• Specific Application (Example): Used in the main landing gear shock strut and torsion link assemblies.

Applications

This bolt is reserved for the most demanding structural connections:

• Primary Structure Assembly: Used to join major structural components that bear the primary flight and landing loads.
• Landing Gear Systems: A critical fastener in the assembly of main and nose landing gear where shock, shear, and tensile loads are extreme.
• Flight-Critical Repairs: The only acceptable hardware for use when performing structural repairs or replacing time-lifed components in accordance with the aircraft's structural repair manual.

Why Choose 130909B39?

The "NDT Inspected" designation means this bolt has been certified to be free of hidden defects that could cause it to fail under stress. For a component used in a location like the main landing gear, such a failure would be catastrophic. Using a genuine Textron Aviation 130909B39 is the only way to ensure you are installing a fastener with a known, verified, and traceable record of material integrity. The safety of the aircraft and its occupants depends on the uncompromising quality of flight-critical hardware like this.

Order Your 130909B39 NDT Bolts Now

Ensure the structural integrity of your aircraft with genuine, NDT-certified hardware from Textron Aviation. Visit Airparts.aero to order your 130909B39 structural bolts today.

The process of Magnetic Particle Inspection (MPI) for a bolt like the 130909B39 involves inducing a strong magnetic field into the ferromagnetic steel part. If there are any surface or near-surface discontinuities (cracks), they will disrupt the flow of the magnetic field, creating a "flux leakage field." A fluid containing fine fluorescent magnetic particles is then applied to the bolt. These particles are attracted to the leakage fields, accumulating directly over any flaws and becoming brightly visible under an ultraviolet (black) light. This non-destructive process provides a highly sensitive and reliable method for ensuring that each individual 130909B39 bolt is free from the microscopic defects that could otherwise become a nucleation site for fatigue crack propagation under the severe cyclical loads experienced by landing gear components.

Applicable Textron Aircraft

• 1900 Airliner
• 1900C Airliner
• 1900D Airliner
• King Air 350 or 350C FM-1 to FM-35
• King Air 360, 350i or 350C FM-36 & on
• King Air B200, B200T, B200C or B200CT
• King Air B200GT or B200CGT
• King Air C90, C90A, C90GT or E90
• King Air C90GTi Series

List not comprehensive, may be applicable on other models.

Note: This is a flight-critical structural component with a specific life limit, requiring mandatory replacement after a certain number of flight hours or cycles. It must only be installed where specified by the aircraft manufacturer's maintenance or structural repair manual. Installation requires the use of a calibrated torque wrench and a new, corresponding high-strength nut and washer, torqued to the precise value specified in the manual.