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ASTM F2437

Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs

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Organization: ASTM
Publication Date: 1 April 2012
Status: inactive
Page Count: 6
scope:

This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators capable of indicating a specified bolt tension in cap screws, bolts, anchors, and studs.

Direct tension indicators in nominal diameter sizes 14 through 212 in. are covered.

There are two Types of DTIs covered by this specification, Type 1 and Type 2.

Type 1 DTIs are suitable for comparatively large bearing surfaces.2 Type 1 DTIs are available in Grades 55 and 105, which differ in the amount of tension they indicate at a prescribed gap.

Type 2 DTIs are suitable for comparatively smaller bearing surfaces.3 Type 2 DTIs are available in Grades 5 and 8, which differ in the amount of tension they indicate at a prescribed gap.

Direct tension indicators are intended for installation under a bolt or cap screw head, a hex nut, or against a hardened washer or other flat hardened surface.

The following precautionary statement pertains only to the test method portions, Section 12 and Appendix XI 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.

2 Examples of a comparatively large bearing surface would include heavy hex bolts, heavy hex nuts, and so forth.

3 Examples of a comparatively small bearing surface would include a hex cap screw, hex nut, and so forth.

*A Summary of Changes section appears at the end of this standard

Document History

March 15, 2017
Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators (DTIs) capable of indicating a specified bolt tension in cap screws, bolts,...
April 1, 2012
Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators capable of indicating a specified bolt tension in cap screws, bolts, anchors,...
ASTM F2437
April 1, 2012
Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators capable of indicating a specified bolt tension in cap screws, bolts, anchors,...
May 1, 2011
Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators capable of indicating a specified bolt tension in cap screws, bolts, anchors,...
August 15, 2006
Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators capable of indicating a specified bolt tension in cap screws, bolts, anchors,...

References

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