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ASTM F844-07a(2013)

(Specification)

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

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

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 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.

General Information

Status
Historical
Publication Date
31-Oct-2013
ICS
21.060.30 - Washers, locking elements
Technical Committee
F16 - Fasteners
Drafting Committee
F16.02 - Steel Bolts, Studs and Nuts
Current Stage
Ref Project

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ASTM F844-07a(2013) - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General UseASTM F844-07a(2013) - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
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ASTM F844-07a(2013) - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F844 −07a (Reapproved 2013)
Standard Specification for
1
Washers, Steel, Plain (Flat), Unhardened for General Use
ThisstandardisissuedunderthefixeddesignationF844;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Washers, Direct Tension Indicators, and Rivets
F1470 Practice for Fastener Sampling for Specified Me-
1.1 Thisspecificationcoversroundandmiscellaneousshape
chanical Properties and Performance Inspection
steel plain (flat) washers furnished in an unhardened condition.
F2329 Specification for Zinc Coating, Hot-Dip, Require-
1.2 The washers are intended for general use bolt, nut, and
ments for Application to Carbon and Alloy Steel Bolts,
stud applications to provide increased bearing surface, spacing,
Screws, Washers, Nuts, and Special Threaded Fasteners
and to prevent galling.
3
2.2 ASME Standards:
1.3 Unless otherwise specified, the washers are furnished B18.22.1 Plain Washers
with dimensions conforming to B18.22.1, Type A, Tables 1A
B18.24 Part Identifying Number (PIN) Code System Stan-
and Tables 1B. dard for B18 Fastener Products
2.3 Military Specification:
1.4 Hardened washers for use with heat-treated structural
4
DOD-P-16232 Phosphate Coating for Ferrous Metals
bolts are covered by Specifications F436 and F436M.
2.4 Federal Specification:
1.5 The values stated in inch-pound units are to be regarded
4
QQ-P-416 Plating, Cadmium (Electrodeposited)
as standard. No other units of measurement are included in this
standard.
3. Ordering Information
3.1 Orders for washers under this specification shall in-
2. Referenced Documents
clude:
2
2.1 ASTM Standards:
3.1.1 Quantity (number of pieces of same item and size).
A29/A29M SpecificationforGeneralRequirementsforSteel
3.1.2 Name of item (steel plain washers).
Bars, Carbon and Alloy, Hot-Wrought
3.1.3 Size (Nominal inside diameter and thickness. Include
A568/A568M Specification for Steel, Sheet, Carbon,
outside diameter, when required).
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
3.2 The following requirements are optional and may be
Cold-Rolled, General Requirements for
specified when required:
A751 Test Methods, Practices, and Terminology for Chemi-
3.2.1 Dimensions if other than B18.22.1, Type A.
cal Analysis of Steel Products
3.2.2 Finish if other than oiled (see 4.3 through 4.3.6).
B633 Specification for Electrodeposited Coatings of Zinc on
3.2.3 Chemical composition, if required (see 5.1.2).
Iron and Steel
3.2.4 Hardness, if required (see 6.2).
B695 Specification for Coatings of Zinc Mechanically De-
3.2.5 Shipment lot Testing, if required (see 9.2).
posited on Iron and Steel
3.2.6 Test Reports, if required (see Section 12).
D3951 Practice for Commercial Packaging
3.2.7 Marking, if required (see 14.1).
F436 Specification for Hardened Steel Washers
3.2.8 For establishment of a part identifying system, see
F436M Specification for Hardened Steel Washers (Metric)
ASME B18.24.
F606 Test Methods for Determining the Mechanical Proper-
ties of Externally and Internally Threaded Fasteners,
4. Materials and Manufacture
4.1 Material—The washers shall be punched from hot-
1
This specification is under the jurisdiction of Committee F16 on Fasteners and
rolled, hot-rolled and pickled, or cold-rolled steel; or shall be
is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets and
Washers. Current edition approved Nov. 1, 2013. Published January 2014. Origi-
nallyapprovedin1983.Lastpreviouseditionapprovedin2007asF844 – 07a.DOI:
3
10.1520/F0844-07AR13. Available from American Society of Mechanical Engineers (ASME), ASME
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from DLA Document Services, Building 4/D, 700 Robbins Avenue,
the ASTM website. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil/
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F844−07a (2013)
machined from bar stock or tubing; or shall be forged at the 5.1.2 When required, the washers shall be specified to
manufacturer’s option. conform to specific chemical requirements.
4.2 Burr Removal—The washers shall be tumbled, vibrated,
5.2 Manufacturer’s Analysis—When specific chemical re-
or
...

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