SAE AS33514 establishes standard dimensions and design requirements for flareless tube connection fitting ends, ensuring reliable, high-pressure sealing in aerospace applications. It defines key technical specifications for bite-type fittings, including seating angles and gasket provisions for hydraulic, fuel, and pneumatic systems. For more details, visit iTeh Standards SIST-EN-6138-2017.pdf - iTeh Standards
. While you will still find it in plenty of existing aircraft (maintenance and repair), engineers are now directed to use alternative standards for modern projects. This makes it a "legacy" standard—essential for keeping older planes in the air but a relic for the next generation of aerospace design. 3. Flareless vs. Flared: Why It Matters
The origins of the flareless design detailed in AS33514 trace directly back to military standardized logistics. sae-as33514
The design is generally superior in vibration-prone applications compared to other connection types.
The origins of this engineering document track back to the Department of Defense (DoD) standardization initiatives. While you will still find it in plenty
This standard superseded the military specification MS33514 . Associated Hardware
Cause: Damaged threads (cross-threading) or missing ferrule. Solution: Replace both nut and fitting body; never re-tap threads. Flareless vs
For new aerospace designs, SAE-AS33514 is the recommended choice due to its proven reliability in flight hours (billions of fleet hours since the 1970s).
hoses reinforced with stainless steel wire to handle the extreme environments of flight. WMT Maintenance Technik AG comparison table between this and the newer standards that replaced it?
These dash numbers are critical when cross-referencing with other SAE standards like AS33515 (fittings for flexible hose).
: Reaffirmed in 2015 to satisfy internal 5-year review policies.