Sae-as33514

Legacy fittings rely entirely on clamp load. Vibration causes "stress relaxation"—the nut loosens over time. AS33514 uses a prevailing torque feature built into the nut geometry, meaning even if the preload relaxes, the mechanical lock remains.

The new standard for fittings isn’t just about threads—it’s about reducing risk. sae-as33514

Background and Purpose

Establishes dimensions for the male end of flareless tube fittings to ensure compatibility with mating parts like SAE AS4395 . Legacy fittings rely entirely on clamp load