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Sae-as33514 Jun 2026

Specifically, SAE-AS33514 defines the design, performance, and testing requirements for . While the title might sound esoteric, the standard governs the tiny but mighty connectors that hold thousands of pounds of hydraulic pressure inside aircraft landing gear, flight control actuators, and braking systems.

Elias didn't need the reminder. He wiped a bead of sweat from his forehead. The AS33514 required a perfect 37-degree flare to mate with the internal cone. If the angle was off by even half a degree, the "metal-to-metal" seal would fail. Under the 3,000 PSI of pressure the Valkyrie exerted during a climb, a microscopic gap would turn into a high-velocity jet of hydraulic fluid, cutting through wire harnesses like a laser.

A wide range of aerospace components rely on these standardized ends to function: sae-as33514

The standard defines three primary shrink ratios, though 2:1 is most common for identification:

| Revision | Publication Date | Status | | :--- | :--- | :--- | | AS33514 | August 1998 / Reaffirmed Jan 2007 | Historical / Reaffirmed | | AS33514A | May 23, 2007 | Historical / Revised | | AS33514B | March 17, 2008 | Historical / Revised | | AS33514C | April 17, 2015 | Historical / Reaffirmed | | AS33514D | January 2, 2019 | Historical / Revised | | AS33514E | April 11, 2019 | Current, Active | He wiped a bead of sweat from his forehead

: The standard mandates the use of highly controlled inch-profile UNJ screw threads featuring an increased minor diameter and a mandatory controlled root radius. This minimizes stress concentrations at the root of the thread, enhancing fatigue life under constant vibration.

| Standard | Focus Area | Relationship to AS33514 | | :--- | :--- | :--- | | | Bulkhead flareless fitting ends | Defines bulkhead fitting ends, complementing AS33514 | | AS4375 | Flareless fitting design standard | Defines the design standard for flareless fittings | | AS85421 | Hose assembly, PTFE, flareless | AS85421 hose assemblies are designed to mate with AS33514 ends | | MIL-DTL-32330/2 | Conductive PTFE hose assembly | Replaced by SAE AS33514 for use in demanding aircraft systems | | BS EN 6138 | Protective caps for fitting ends | Specifies protective caps for AS33514 fitting ends | | MS21907 | MS elbow fitting for flareless tubes | MS fittings are made to mate with AS33514 ends | Under the 3,000 PSI of pressure the Valkyrie

The following standards are cited within SAE AS33514, meaning their requirements are integral to its application:

standard dimensions for a flareless tube connection and gasket seal SAE Mobilus

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