The primary function of the AS33514 standard is to provide a reliable, leak-proof connection for hydraulic and fluid lines without the need for flaring the tube ends. It features a design with an external thread.
: The standard also defines dimensions for gasket seals to ensure airtight and fluid-tight integrity under varying pressures. Key Specifications
is an aerospace standard that specifies the design requirements and standard dimensions for a flareless tube connection and gasket seal fitting end. Originally derived from the United States Military Specification MS33514 , it serves as a critical blueprint for ensuring the mateability and performance of fluid system components in high-stress aerospace environments. Purpose and Technical Function sae-as33514
: Components are typically rated for extreme temperature ranges, often from -65 °F to +275 °F (-54 °C to 135 °C), making them suitable for both military and commercial aviation platforms like the F-15, F-16, and C-17. Standard Status and Alternatives
As of , SAE AS33514 was designated as inactive for new designs . While it remains widely used for the maintenance and repair of existing aircraft, new aerospace projects are generally directed toward alternative standards: The primary function of the AS33514 standard is
: Unlike flared fittings that require the tube end to be widened, flareless fittings use a sleeve or ferrule that bites into the outer diameter of the tube, creating a mechanical seal.
: Surface roughness must comply with ANSI/ASME B46.1 to prevent leaks at the sealing interface. Key Specifications is an aerospace standard that specifies
Engineers and manufacturers adhere to strict dimensional data and quality notes within the AS33514 standard to ensure part interchangeability: