ASTM-F844 Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use

ASTM-F844 - 2007A R13 EDITION - CURRENT
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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.

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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 F436 and F436M.

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

Keywords

carbon steel; plain; steel; washers; ICS Number Code 21.060.30 (Washers, locking elements)

To find similar documents by ASTM Volume:

01.08 (Fasteners; Rolling Element Bearings)

To find similar documents by classification:

21.060.30 (Washers, locking elements)

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Document Number

ASTM-F844-07a(2013)

Revision Level

2007A R13 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Jan. 15, 2014

Document Type

Specification

Page Count

3 pages

Committee Number

F16.02