ASTM F959M-13

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:F959M −13
StandardSpecification for
Compressible-Washer-Type Direct Tension Indicators for
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Use With Structural Fasteners (Metric)
This standard is issued under the fixed designation F959M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript 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* F436MSpecification for Hardened Steel Washers (Metric)
A490MSpecification for High-Strength Steel Bolts, Classes
1.1 This specification covers the requirements for
10.9 and 10.9.3, for Structural Steel Joints (Metric)
compressible-washer-type direct tension indicators capable of
B695Specification for Coatings of Zinc Mechanically De-
indicatingtheachievementofaspecifiedminimumbolttension
posited on Iron and Steel
in a structural bolt.
D3951Practice for Commercial Packaging
1.2 Two types of direct tension indicators in nominal
F606MTest Methods for Determining the Mechanical Prop-
diameter sizes M16 through M36 are covered:
erties of Externally and Internally Threaded Fasteners,
1.2.1 Type 8.8—direct tension indicators for use with Speci-
Washers, and Rivets (Metric)
fication A325M bolts, and
F1470Practice for Fastener Sampling for Specified Me-
1.2.2 Type 10.9—direct tension indicators for use with
chanical Properties and Performance Inspection
Specification A490M bolts.
2.2 Research Council on Structural Connections Standard:
1.3 Direct tension indicators are intended for installation Specification for Structural Joints Using ASTM A 325 or
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under either a bolt head or a hardened washer. (See Research A490 Bolts
CouncilonStructuralConnections:SpecificationforStructural
3. Terminology
Joints Using ASTM A325 or A490 Bolts.)
3.1 Definitions of Terms Specific to This Standard:
1.4 The values stated in SI units are to be regarded as
3.1.1 compressible-washer-type direct tension indicator,
standard. No other units of measurement are included in this
n—a washer-type element inserted under the bolt head or
standard.
hardened washer, having the capability of indicating the
1.5 The following precautionary statement pertains only to
achievement of a required minimum bolt tension by the degree
thetestmethodsportions,Section12,andAppendixX1ofthis
of direct tension indicator plastic deformation. Hereafter re-
specification: This standard does not purport to address all of
ferred to as direct tension indicator.
the safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Ordering Information
priate safety and health practices and determine the applica-
4.1 Orders for direct tension indicators under this specifica-
bility of regulatory limitations prior to use.
tion shall include the following:
4.1.1 Quantity (number of pieces);
2. Referenced Documents
4.1.2 Name of product (direct tension indicator);
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2.1 ASTM Standards:
4.1.3 Size, that is, nominal diameter;
A325M Specification for Structural Bolts, Steel, Heat
4.1.4 ASTM designation and year of issue (if not specified,
Treated 830 MPa Minimum Tensile Strength (Metric)
current issue shall be used);
4.1.5 Type required, 8.8 or 10.9 (see 1.2);
4.1.6 Coating type, if required (see 5.4);
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This specification is under the jurisdiction of ASTM Committee F16 on
4.1.7 Source inspection, if required (Section 13);
Fasteners and is the direct responsibility of Subcommittee F16.02Steel Bolts, Nuts,
Rivets and Washers.
4.1.8 Certificates of compliance or test reports, if required
Current edition approved March 1, 2013. Published March 2013. Originally
(Section 15); and
approved in 1994. Last previous edition approved in 2007 as F959M–07. DOI:
4.1.9 Any special requirements.
10.1520/F0959M-13.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available from Research Council on Structural Connections at www.boltcoun-
the ASTM website. cil.org.
*A Summary of Changes section appears at the end of this standard
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F959M−13
5. Materials and Manufacture 7. Performance Requirements
5.1 Steel used in the manufacture of direct tension indica- 7.1 Compression Loads—When compressed to the gap
tors shall be produced by the basic-oxygen or electric-furnace specified in Table 2, the compression load shall conform to the
process. requirements specified in
...