ASTM F 844 - 07 Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use

American Society for Testing and Materials (ASTM). Current edition approved Aug. 1, 2007. Published August 2007. Originally approved in 1983. Last previous edition approved in 2004 as F 844 – 04. 4 p. This specification covers round and miscellaneous shape steel plain (flat) washers furnished in an unhardened condition.
The washers are intended for general use bolt, nut, and stud applications to provide increased bearing surface, spacing, and to prevent galling.