SAE AS21152B
Bearing, Ball, Rod end, Double Row, Precision, Internal Thread, Self-Aligning, Airframe, Type IV, -65° to 300°F
standard by SAE International, 04/01/1998
SAE AIR 1813A
The Coanda/Refraction Concept for Gas Turbine Engine Test Cell Noise Suppression ( Reaffirmed: Nov 2007 )
standard by SAE International, 04/01/1998