Standard Historical Last Updated: Jan 27, 2014 Track Document
ASTM F844-07a

Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use

Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use F0844-07A ASTM|F0844-07A|en-US Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use Standard new BOS Vol. 01.09 Committee F16
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Abstract

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. The washers shall be punched from hot-rolled, hot-rolled and pickled, or cold-rolled steel; or shall be machined from bar stock or tubing; or shall be forged. The washers shall also be tumbled, vibrated, or otherwise processed to minimize burrs. These washers may be zinc-coated, hot-dip-coated, cadmium-plated, or zinc-plated by using hot dipping, mechanical deposition, and electroplating processes. Chemical analysis may be conducted in order to determine the composition of washers and a hardness test may also be performed.

Scope

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

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

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

1.4 Hardened washers for use with heat-treated structural bolts are covered by Specifications F 436 and F 436M.

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Details
Book of Standards Volume: 01.09
Developed by Subcommittee: F16.02
Pages: 4
DOI: 10.1520/F0844-07A
ICS Code: 21.060.30