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Aerospace Industries Association , 09/30/2011
Publisher: AIA
File Format: PDF
$33.00$66.00
This specification establishes the requirements for a coupling for use with low pressure, low and medium high temperature, air ducts.
Types. Couplings shall be of two types as follows:
Type I – 450 °F, NAS520
Type II – 250 °F, NAS521
Sizes. Couplings shall be of the sizes specified on the applicable NAS drawing.
$27.00 $55.00
$33.00 $66.00
