ASTM F844-07a(2013)

1.1This specification covers round and miscellaneous shape steel plain (flat) washers furnished in an unhardened condition.

1.2The washers are intended for general use bolt, nut, and stud applications to provide increased bearing surface, spacing, and to prevent galling.

1.3Unless otherwise specified, the washers are furnished with dimensions conforming to B18.22.1, Type A, Tables 1A and Tables 1B.

1.4Hardened washers for use with heat-treated structural bolts are covered by Specifications F436 and F436M.

1.5The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.