A-1635-133 – Textron Aviation OEM Stainless Steel Aerospace Screw
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Overview
The Textron Aviation A-1635-133 is a genuine OEM, proprietary fillister head machine screw, engineered for specific non-structural applications within the Beechcraft King Air series of aircraft. This fastener is precision-machined from high-quality, corrosion-resistant steel (CRES) to provide a reliable and durable fastening solution. The fillister head design offers a unique combination of a deep slot for high torque application and a tall profile suitable for use in counterbored holes. As a genuine Textron OEM part, it guarantees the exact material composition and dimensional tolerances required for a certified, airworthy installation.
Key Features
- Corrosion-Resistant Steel (CRES) Construction: Fabricated from a high-grade, 300-series stainless steel alloy. This material provides excellent inherent resistance to rust and corrosion from atmospheric moisture and aviation fluids, ensuring long-term integrity without the need for plating.
- Fillister Head Design: Features a fillister head, which is taller and has a deeper slot than a standard pan head screw. This design allows for higher tightening torque with a flat-blade driver and provides a larger bearing surface, making it ideal for securing components in recessed or counterbored holes.
- Precision Rolled Threads: The 8-32 UNC threads are rolled, not cut. This manufacturing process cold-works the material, creating a denser grain structure that results in stronger, more fatigue-resistant threads compared to standard machined screws.
- Passivated Finish: The stainless steel is passivated, a chemical process that removes free iron from the surface and enhances the formation of the passive chromium oxide layer, maximizing the material's natural corrosion resistance.
- Genuine Textron OEM Part: As the genuine factory component, it guarantees conformance to the proprietary engineering drawings and quality standards set by Textron Aviation, ensuring a perfect fit and reliable performance.
Technical Specifications
- Part Number: A-1635-133
- Component Type: Fillister Head Machine Screw
- Material: Corrosion-Resistant Steel (CRES), 300-Series Stainless Steel
- Finish: Passivated
- Head Style: Fillister Head
- Drive Type: Slotted
- Thread Specification: 8-32 UNC-2A
- Nominal Diameter: #8 (0.164 inches)
- Threads Per Inch: 32 (Coarse Thread)
- Length: 5/8 inch (0.625 inches), measured from under the head.
- Certification: FAA Production Approval
Aircraft Compatibility
The A-1635-133 is a specified component used in various assemblies on the world's most popular family of turboprop aircraft.
- Primary Aircraft Models:
- Beechcraft King Air: 90, 100, 200, 300/350 Series
Applications
The A-1635-133 is the specified fastener for various non-structural and systems installations:
- Component & Bracket Installation: Used to secure various system brackets, clamps, and interior components where a high-quality, corrosion-resistant fastener is required.
- Instrument & Panel Assembly: Ideal for applications requiring a deep, positive driver engagement for secure fastening of panels and instruments.
- Counterbored Hole Applications: The tall head design is perfectly suited for installation in counterbored holes, where the head sits flush with or just below the surface of the component.
Why Choose A-1635-133?
The long-term reliability of an aircraft depends on the quality of every single piece of hardware. The Textron Aviation A-1635-133 provides the certified material properties and corrosion resistance needed for a durable, airworthy repair. Using a genuine OEM part ensures that the fastener meets the specific engineering requirements of its intended application, from the precise dimensions of the fillister head to the metallurgical properties of the stainless steel. For a professional repair that meets factory standards, there is no substitute for genuine OEM hardware.
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- Meta Title: A-1635-133 Textron King Air Stainless Steel Fillister Head Screw | 8-32 | Airparts.aero
- Meta Description: Purchase the genuine Textron Aviation A-1635-133, a stainless steel, 8-32 x 5/8" fillister head screw. A critical OEM component for non-structural applications on Beechcraft King Air aircraft.
- SEO and Plain Text Keywords: A-1635-133, Textron Aviation parts, Beechcraft parts, King Air parts, fillister head screw, stainless steel screw, CRES screw, aircraft hardware, OEM Beechcraft parts, aerospace fastener, Airparts.aero.
Order Your A-1635-133 Screws Now
Ensure your repairs are completed to the highest factory standards with genuine, traceable OEM hardware. Visit Airparts.aero to order your Textron Aviation A-1635-133 stainless steel screws today.
SEO-Enhanced Addendum
The A-1635-133 fillister head screw provides a distinct advantage over other head types in specific applications. Its cylindrical shape and increased head height provide a larger surface area for the driving tool to engage, which is particularly useful for slotted drives where "cam-out" (the driver slipping out of the slot) can be an issue under high torque. The smaller diameter of the head compared to a pan head of similar strength allows it to be used in tighter spaces and in counterbored holes designed to keep the fastener head from protruding above the component surface. The choice of a coarse (UNC) thread provides faster installation and greater resistance to cross-threading compared to fine threads, making it ideal for locations that may be serviced in the field.
Note: This is a certified aerospace fastener. Always verify the correct screw part number from the applicable aircraft maintenance manual or Illustrated Parts Catalog (IPC). Use the correct size and type of screwdriver bit to prevent damage to the slot during installation.
