GF5-225 - Dzus Full Grommet

GF5-225 – Dzus Full Grommet

Available now on the Airparts.aero Marketplace.

Overview

The Dzus GF5-225 is a genuine, military-standard grommet, an essential component of the widely-used Dzus AJ5 Series quarter-turn fastener system. This is not a simple washer; it is a precision-manufactured retaining grommet designed to be permanently installed in an outer panel or cowling. Its primary functions are to provide a hard, wear-resistant seat for the quarter-turn stud, protect the panel material from damage, and hold the stud assembly in a captive state. Fabricated from high-quality aluminum alloy, the GF5-225 is the industry standard for creating a durable and serviceable quick-access panel system.

Key Features

• Panel Protection & Reinforcement: The grommet provides a robust, metallic liner for the fastener hole in a panel. This reinforces the hole and prevents the rotating steel stud from elongating or damaging the softer aluminum or composite panel material over time.
• Creates a Captive Assembly: When installed, the grommet holds the Dzus stud, spring, and pin assembly captive within the outer panel. This is a critical feature that prevents the loss of hardware when the panel is opened, eliminating potential Foreign Object Debris (FOD).
• Provides a Secure Seat: The grommet's precisely shaped rim provides a secure and consistent bearing surface for the head of the Dzus stud, ensuring proper engagement and clamping force when the fastener is locked.
• Lightweight Aluminum Construction: Manufactured from a high-quality aluminum alloy, providing excellent durability and corrosion resistance at a minimal weight.
• Industry Standard Component: As a standard part conforming to the original Dzus and military specifications, it guarantees perfect fitment and interchangeability with all corresponding AJ5 series studs and installation tooling.

Technical Specifications

• Part Number: GF5-225
• Component Type: Quarter-Turn Fastener Grommet
• Fastener Series Compatibility: Dzus AJ5 Series
• Material: Aluminum Alloy
• Finish: Plain or Anodized
• Key Dimensions:
  • For Stud Body Diameter: #5 (5/16 inch)
  • Material Thickness Range: 0.220 to 0.229 inches (The "-225" designates the material grip range)
  • Installation: Requires flaring with a specialized Dzus grommet setting tool.
• Certification: Conforms to original Dzus / Southco specifications.

Aircraft Compatibility

The Dzus GF5-225 grommet is a universal component used on any aircraft panel that utilizes the corresponding Dzus AJ5 series quarter-turn fastener system. This includes a vast range of certified and experimental aircraft.

• Common Applications:
  • Engine Cowlings: Providing the receptacle holes for the cowling's quick-release fasteners.
  • Inspection Panels: Used on numerous access panels on the fuselage, wings, and empennage.
  • Avionics Bay Doors: Securing panels that require frequent and rapid access to electronic components.
  • Fairings & Interior Panels: Used to secure various fairings and removable interior panels.

Applications

The GF5-225 is a fundamental component for any quick-release panel system:

• Panel Fabrication & Repair: The primary component installed when creating a new panel or repairing a damaged fastener hole in an existing panel.
• FOD Prevention: Its captive design is a critical feature for preventing the loss of fasteners, which can become dangerous Foreign Object Debris (FOD).
• Maintenance Efficiency: By keeping the studs with the panel, it dramatically speeds up maintenance by eliminating the need to handle and track loose screws.

Why Choose GF5-225?

The reliability of a quick-release cowling or panel is dependent on the integrity of every component in the fastener assembly. The GF5-225 grommet is essential for a long-lasting, durable installation. It protects the expensive panel from wear and ensures the stud aligns and seats correctly every time. Using a genuine, high-quality Dzus grommet guarantees the correct material and dimensions required for a professional and airworthy installation that will withstand thousands of open/close cycles.

Order Your Dzus GF5-225 Grommets Now

Ensure your quick-release panels are secure and durable with genuine Dzus hardware. Visit Airparts.aero to order your GF5-225 grommets today.

The Dzus GF5-225 grommet is installed using a flaring process. The grommet is inserted into a precisely drilled hole in the outer panel. A specialized setting tool, consisting of a die and a punch, is then used to apply pressure. The punch flares the small end of the grommet on the backside of the panel, similar to a rivet. This flare securely and permanently clamps the grommet to the panel. This installation creates a hardened, wear-resistant receptacle that isolates the Dzus stud from the panel material, ensuring that the repeated turning and locking action of the steel stud does not damage the panel itself, which is a critical function for preserving the integrity of composite or thin aluminum cowlings.

Note: This is a permanent fastener component. Installation requires a precisely drilled hole and specialized Dzus grommet setting tools. The selection of the correct grip length (e.g., "-225" for a 0.220"-0.229" panel thickness) is critical for a secure installation. This must be performed by a certified A&P mechanic with experience in sheet metal and fastener installation.