The standard has a clear lineage, simplifying sourcing and procurement for engineers. The "MS" prefix (Military Standard) was used for the original , which SAE has since replaced with SAE-AS33514 .
The SAE AS33514 document is titled .
SAE-AS33514 Interface Profile (24-Degree Internal Cone) Fitting Body +--------------------+ | \ | \ <--- 24° Seal Cone Surface | Fluid Pass | | / | / +--------------------+ Geometry and Configurations
: The current active version , reaffirmed to meet rigorous aerospace safety protocols. sae-as33514
A common point of confusion is the difference between AS33514 and other similar standards. Here is a quick comparison:
If you are launching a new UAV, a next-gen eVTOL, or a clean-sheet engine program, do not default to the legacy standard. Specify AS33514. Your future self (and your maintenance crew) will thank you.
Implementation Roadmap (high level)
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:
SAE AS33514 has undergone several revisions to reflect new industry needs. For purchasing and engineering, you must use the correct revision. The key revisions are , with 'E' being the latest.
The origins of the flareless design detailed in AS33514 trace directly back to military standardized logistics. The standard has a clear lineage, simplifying sourcing
The standard was originally established as a military specification ( ) and was adopted by SAE International
The primary application of SAE AS33514 is in the design and quality control of flareless tube connection ends. The standard is directly applicable to several key areas:
