National Aerospace Standard (NAS) 1638, SAE AS-4059, and ISO 11218

[DM2]

Does anyone have the following standards:

• NAS-1638 - Cleanliness Requirements of Parts Used in Hydraulic Systems
• SAE AS4059 - Aerospace Fluid Power – Cleanliness Classification for Hydraulic Fluids
• ISO-11218 - Aerospace - Cleanliness classification for hydraulic fluids

NAS-1638 is Inactive for new designs after May 30, 2001. The standard points to the SAE AS4059. ISO 11218 is an endorsement of the SAE AS4059 standard.

[selmagis]

Also, good info:

[link Point to another website Only the registered members can access]

[DM2]

Selmagis,
Thanks for the ISO file. I found that website will trying to see if the NAS document was out there.

Thanks again.

If anyone as the other files it would be appreciated.