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 current version is AS33514E , released in April 2019. sae-as33514
The standard was established to replace older military specifications, specifically the G series, ensuring a standardized approach to flareless fitting connections across the aerospace and defense industries. Core Purpose of the Specification SAE AS33514 has undergone several revisions to reflect
For engineers, the use of AS33514 is mandatory to ensure a component is designed to the correct, interface-critical dimensions. For procurement professionals, referencing this standard in purchase orders is non-negotiable to guarantee that the parts received will physically fit and function as intended in the aircraft's fluid systems. The current version is AS33514E , released in April 2019
Whether you are maintaining a 30-year-old C-130 Hercules or certifying the hydraulic system of a next-generation eVTOL aircraft, is your benchmark for safety and performance. Always consult the latest revision, never compromise on materials, and when in doubt – replace the fitting.
to standardize aerospace engineering practices. While it remains in use for existing equipment, it was declared "inactive for new design" in July 2008. For modern aerospace projects, engineers are generally directed to use as replacements. Technical Specifications
: 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.