ASTM F844-07a

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 F 436 and F 436M.

General Information

• Status: Historical
• Publication Date: 30-Nov-2007
• ICS: 21.060.30 - Washers, locking elements
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

Relations

• Replaces: ASTM F844-04e1 - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
• Effective Date: 01-Dec-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
StandardSpecification 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 Department of Defense.
1. Scope* F1470 Practice for Fastener Sampling for Specified Me-
chanical Properties and Performance Inspection
1.1 Thisspecificationcoversroundandmiscellaneousshape
F2329 Specification for Zinc Coating, Hot-Dip, Require-
steel plain (flat) washers furnished in an unhardened condition.
ments for Application to Carbon and Alloy Steel Bolts,
1.2 The washers are intended for general use bolt, nut, and
Screws, Washers, Nuts, and Special Threaded Fasteners
stud applications to provide increased bearing surface, spacing,
3
2.2 ASME Standards:
and to prevent galling.
B18.22.1 Plain Washers
1.3 Unless otherwise specified, the washers are furnished
B18.24 Part Identifying Number (PIN) Code System Stan-
with dimensions conforming to B18.22.1, Type A, Tables 1A
dard for B18 Fastener Products
and Tables 1B.
2.3 Military Specification:
4
DOD-P-16232 Phosphate Coating for Ferrous Metals
1.4 Hardened washers for use with heat-treated structural
bolts are covered by Specifications F436 and F436M. 2.4 Federal Specification:
4
QQ-P-416 Plating, Cadmium (Electrodeposited)
2. Referenced Documents
3. Ordering Information
2
2.1 ASTM Standards:
3.1 Orders for washers under this specification shall in-
A29/A29M Specification for Steel Bars, Carbon and Alloy,
clude:
Hot-Wrought, General Requirements for
3.1.1 Quantity (number of pieces of same item and size).
A568/A568M Specification for Steel, Sheet, Carbon,
3.1.2 Name of item (steel plain washers).
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
3.1.3 Size (Nominal inside diameter and thickness. Include
Cold-Rolled, General Requirements for
outside diameter, when required).
A751 Test Methods, Practices, and Terminology for Chemi-
cal Analysis of Steel Products
3.2 The following requirements are optional and may be
B633 Specification for Electrodeposited Coatings of Zinc on
specified when required:
Iron and Steel
3.2.1 Dimensions if other than B18.22.1, Type A.
B695 Specification for Coatings of Zinc Mechanically De-
3.2.2 Finish if other than oiled (see 4.3 through 4.3.6).
posited on Iron and Steel
3.2.3 Chemical composition, if required (see 5.1.2).
D3951 Practice for Commercial Packaging
3.2.4 Hardness, if required (see 6.2).
F436 Specification for Hardened Steel Washers
3.2.5 Shipment lot Testing, if required (see 9.2).
F436M Specification for Hardened Steel Washers (Metric)
3.2.6 Test Reports, if required (see Section 12).
F606 Test Methods for Determining the Mechanical Proper-
3.2.7 Marking, if required (see 14.1).
ties of Externally and Internally Threaded Fasteners,
3.2.8 For establishment of a part identifying system, see
Washers, Direct Tension Indicators, and Rivets
ASME B18.24.
4. Materials and Manufacture
1
This specification is under the jurisdiction of Committee F16 on Fasteners and
4.1 Material—The washers shall be punched from hot-
is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets and
rolled, hot-rolled and pickled, or cold-rolled steel; or shall be
Washers.
Current edition approved Dec. 1, 2007. Published January 2008. Originally
approved in 1983. Last previous edition approved in 2007 as F844 – 07. DOI:
3
10.1520/F0844-07A. Available from American Society of Mechanical Engineers (ASME), ASME
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM www.asme.org.
4
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
1

---------------------- Page: 1 ----------------------
F844−07a
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 otherwise processed to minimize burrs. quirements have been specified and test reports
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:F844–07 Designation: F 844 – 07a
Standard Specification for
1
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.
1. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A 29/A 29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for
A 568/A 568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B 633 Specification for Electrodeposited Coatings of Zinc on Iron and Steel
B 695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
D 3951 Practice for Commercial Packaging
F 436 Specification for Hardened Steel Washers
F 436M Specification for Hardened Steel Washers [Metric]
F 606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers,
Direct Tension Indicators, and Rivets
F 1470 Guide for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F 2329 Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws,
Washers, Nuts, and Special Threaded Fasteners
3
2.2 ASME Standards:
B18.22.1 Plain Washers
B18.24 Part Identifying Number (PIN) Code System Standard for B18 Fastener Products
2.3 Military Specification:
4
DOD-P-16232 Phosphate Coating for Ferrous Metals
2.4 Federal Specification:
4
QQ-P-416 Plating, Cadmium (Electrodeposited)
3. Ordering Information
3.1 Orders for washers under this specification shall include:
3.1.1 Quantity (number of pieces of same item and size).
3.1.2 Name of item (steel plain washers).
3.1.3 Size (Nominal inside diameter and thickness. Include outside diameter, when required).
1
This specification is under the jurisdiction of Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets and
Washers.
e1
Current edition approvedAug.Dec. 1, 2007. PublishedAugust 2007.January 2008. Originally approved in 1983. Last previous edition approved in 20042007 as F844–04 .
F 844 – 07.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
4
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, 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.
1

---------------------- Page: 1 ----------------------
F 844 – 07a
3.2 The following requirements are optional and may be specified when required:
3.2.1 Dimensions if other than B18.22.1, Type A.
3.2.2 Finish if other than oiled (see 4.3 through 4.3.6).
3.2.3 Chemical composition, if required (see 5.1.2).
3.2.4 Hardness, if required (see 6.2).
3.2.5 Shipment lot Testing, if required (see 9.2).
3.2.6 Test Reports, if required (see Section 12).
3.2.7 Marking, if required (see 14.1).
3.2.8 For establishment of a part identifying system, see ASME B18.24.
4. Materials and Manufacture
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 manufacturer’s option.
4.2 Burr Removal—The washers shal
...