ANSI/ASME B18.21.1-1999
Lock Washers (Inch Series)

Standard No.

ANSI/ASME B18.21.1-1999

Release Date

1999

Published By

American National Standards Institute （ANSI)

Status

Withdraw

Replace By

ANSI/ASME B18.21.1-2009

Latest

ANSI/ASME B18.21.1-2009

Scope

This Standard covers the dimensions, physical properties, and methods of testing for helical spring- and tooth-lock washers.

ANSI/ASME B18.21.1-1999 history

• 2009 ANSI/ASME B18.21.1-2009 Washers-Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series)
• 1999 ANSI/ASME B18.21.1-1999 Lock Washers (Inch Series)