Browse Standards AS4059
Historical ISSUED 1988-06-14

AEROSPACE-CLEANLINESS CLASSIFICATION FOR HYDRAULIC FLUIDS AS4059

This SAE Aerospace Standard defines cleanliness levels for particulate contamination of hydraulic fluids and includes methods of reporting data relating to the contamination levels. The contamination levels selected are an extension and simplification of the widely accepted NAS 1638.
AS4059G
2022-11-22
Latest
Revised
AS4059F
2020-05-05
Historical
Reaffirmed
AS4059E
2011-03-18
Historical
Reaffirmed
AS4059D
2001-04-01
Historical
Revised
AS4059C
2000-08-01
Historical
Revised
AS4059B
1995-03-01
Historical
Revised
AS4059A
1990-03-30
Historical
Revised
AS4059
1988-06-14
Historical
Issued

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