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ASTM F959M-13

Current Revision

Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use With Structural Fasteners (Metric) (Withdrawn 2016)

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1.1 This specification covers the requirements for compressible-washer-type direct tension indicators capable of indicating the achievement of a specified minimum bolt tension in a structural bolt.

1.2 Two types of direct tension indicators in nominal diameter sizes M16 through M36 are covered:

1.2.1 Type 8.8—direct tension indicators for use with Specification A325M bolts, and

1.2.2 Type 10.9—direct tension indicators for use with Specification A490M bolts.

1.3 Direct tension indicators are intended for installation under either a bolt head or a hardened washer. (See Research Council on Structural Connections: Specification for Structural Joints Using ASTM A325 or A490 Bolts.)

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 The following precautionary statement pertains only to the test methods portions, Section 12, and Appendix X1 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


This specification covers the requirements for two types (Types 8.8 and 10.9) of compressible-washer-type direct tension indicators, in nominal diameter sizes M16 through M36, capable of indicating the achievement of a specified minimum bolt tension in a structural bolt and are intended for installation under either a bolt head or a hardened washer. Steel materials used in the manufacture of direct tension indicators shall be designed, processed, and protectively coated as specified. The direct tension indicators shall conform to required chemical composition, compression load, outside diameter, number of protrusions, thickness values, inside diameter, and protrusion tangential diameter values.


SDO ASTM: ASTM International
Document Number F959
Publication Date March 1, 2013
Language en - English
Page Count 5
Revision Level 13
Supercedes
Committee F16.02
Publish Date Document Id Type View
March 1, 2013 F0959M-13 Revision
Dec. 1, 2007 F0959M-07 Revision
Nov. 1, 2006 F0959M-06 Revision
Aug. 1, 2004 F0959M-04 Revision
April 10, 2002 F0959M-99A Revision
April 10, 2002 F0959M-02 Revision
April 10, 2002 F0959M-01A Revision
April 10, 2002 F0959M-01 Revision