ASTM F844-04e1
(Specification)Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
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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Designation: F 844 – 04
Standard Specification for
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Washers, Steel, Plain (Flat), Unhardened for General Use
This standard is issued under the fixed designation F 844; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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e NOTE—Sections 2.2 and 3.2.8 were editorially revised in October 2006.
1. Scope* Washers, Direct Tension Indicators, and Rivets
F 1470 GuideforFastenerSamplingforSpecifiedMechani-
1.1 Thisspecificationcoversroundandmiscellaneousshape
cal Properties and Performance Inspection
steel plain (flat) washers furnished in an unhardened condition.
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2.2 ASME Standards:
1.2 The washers are intended for general use bolt, nut, and
B18.22.1 Plain Washers
stud applications to provide increased bearing surface, spacing,
B18.24 Part Identifying Number (PIN) Code System Stan-
and to prevent galling.
dard for B18 Fastener Products
1.3 Unless otherwise specified, the washers are furnished
2.3 Military Specification:
with dimensions conforming to B18.22.1, Type A, Tables 1A
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DOD-P-16232 Phosphate Coating for Ferrous Metals
and Tables 1B.
2.4 Federal Specification:
1.4 Hardened washers for use with heat-treated structural
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QQ-P-416 Plating, Cadmium (Electrodeposited)
bolts are covered by Specifications F 436 and F 436M.
3. Ordering Information
2. Referenced Documents
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3.1 Orders for washers under this specification shall in-
2.1 ASTM Standards:
clude:
A 29/A 29M SpecificationforSteelBars,CarbonandAlloy,
3.1.1 Quantity (number of pieces of same item and size).
Hot-Wrought, General Requirements for
3.1.2 Name of item (steel plain washers).
A 153/A 153M Specification for Zinc Coating (Hot-Dip) on
3.1.3 Size (Nominal inside diameter and thickness. Include
Iron and Steel Hardware
outside diameter, when required).
A 568/A 568M Specification for Steel, Sheet, Carbon,
3.2 The following requirements are optional and may be
Structural, and High-Strength, Low-Alloy, Hot-Rolled and
specified when required:
Cold-Rolled, General Requirements for
3.2.1 Dimensions if other than B18.22.1, Type A.
A 751 Test Methods, Practices, and Terminology for
3.2.2 Finish if other than oiled (see 4.3 through 4.3.6).
Chemical Analysis of Steel Products
3.2.3 Chemical composition, if required (see 5.1.2).
B 633 Specification for Electrodeposited Coatings of Zinc
3.2.4 Hardness, if required (see 6.2).
on Iron and Steel
3.2.5 Shipment lot Testing, if required (see 9.2).
B 695 Specification for Coatings of Zinc Mechanically
3.2.6 Test Reports, if required (see Section 12).
Deposited on Iron and Steel
3.2.7 Marking, if required (see 14.1).
D 3951 Practice for Commercial Packaging
3.2.8 For establishment of a part identifying system, see
F 436 Specification for Hardened Steel Washers
ASME B18.24.
F 436M Specification for Hardened Steel Washers [Metric]
F 606 Test Methods for Determining the Mechanical Prop-
4. Materials and Manufacture
erties of Externally and Internally Threaded Fasteners,
4.1 Material—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 at the
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This specification is under the jurisdiction of Committee F16 on Fasteners and
manufacturer’s option.
is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets and
Washers.
Current edition approved Aug. 1, 2004. Published August 2004. Originally
approved in 1983. Last previous edition approved in 2000 as F 844 – 00.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Society of Mechanical Engineers (ASME), ASME
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM International Headquarters, Three Park Ave., New York, NY 10016-5990.
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Standards volume information, refer to the standard’s Document Summary page on Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
the ASTM website. Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F844–04
4.2 Burr Removal—The washers shall be tumbled, vibrated, 5.2 Manufacturer’s Analysis—When specific chemical re-
or otherwise processed to minimize burrs. quirements have been specified and test reports are required,
4.3 Protective Finishes: the manufacturer shall make individual analyses of randomly
4.3.1 Unprotected W
...
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