Browse Standards AS291C
Historical REVISED 1963-05-15

SURFACE ROUGHNESS (AA) AS291C

This standard provides a method of applying surface roughness, waviness and lay control. The data included herein also covers the method of applying surface roughness symbols and related designations to drawings and specifications of parts when applicable. This standard is based on the Arithmetical Average (AA) method of instrumentation. Data compiled are based on current manufacturing practices. It also includes a summary of data published in the American Standards Association publication ASA B46.1 - 1962 which may be referred to for supplementary data.
AS291F
2014-09-05
Latest
Stabilized
AS291E
2006-05-04
Historical
Reaffirmed
AS291D
1995-05-01
Historical
Noncurrent
AS291C
1963-05-15
Historical
Revised
AS291B
1960-03-01
Historical
Revised
AS291A
1955-07-01
Historical
Revised
AS291
1954-12-15
Historical
Issued

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