SAE-AS33514-compliant fittings are found in virtually every fixed-wing and rotary-wing aircraft with hydraulic systems, including:
You get a reduction in warranty claims. By specifying AS33514, you move installation error from the "operator skill" column to the "design robustness" column.
SAE-AS33514 is a published Aerospace Standard (AS) by SAE International (originally the Society of Automotive Engineers). Its full title is: "Sleeving, Markable, Heat-Shrinkable, Polyvinylidene Fluoride (PVDF), Crosslinked, for Wire and Cable Identification."
The active design blueprint utilized globally across civilian aircraft production lines and modernized defense contracts. Technical Design Architecture & Geometry sae-as33514
Establishes uniform dimensions for the "fitting end" (the portion of the fitting that mates with a tube or another component) to ensure interchangeability and reliable sealing without the need for flaring the tube.
In simple terms, SAE-AS33514 specifies how to make a leak-proof, vibration-resistant fitting without using a traditional flare. This "flareless" design is a game-changer for durability and maintenance.
This standard is critical for aircraft oxygen systems, particularly in general aviation, business jets, and some military trainer/transport aircraft. This "flareless" design is a game-changer for durability
Here is a story about the life of a fitting built to the AS33514 standard. The "Flareless" Hero of Flight 402
Typically utilizes straight thread forms (often MIL-S-8879 or UNJF).
Scope and Applicability
For the latest revision of SAE-AS33514, visit SAE International’s website (SAE.org) or consult your aerospace quality department.
), though some versions were marked inactive for new designs as of 2008. Associated Hardware MIL-DTL-27272 Revision D Amendment 2 - DLA