ASTM-F959 › Historical Revision Information
Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

ASTM-F959 - 2007A EDITION - SUPERSEDED
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This specification covers the requirements for four types (Types 325, 325-3, 490, and 490-3) of compressible-washer-type direct tension indicators, in nominal diameter sizes ½ through 1 ½ in., 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, heat treated, and protectively coated as specified. The direct tension indicators shall conform to required chemical composition, compression load, and dimensional values.

ORDER

Scope

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 Four types of direct tension indicators in nominal diameter sizes ½ through 1 ½ in. are covered:

1.2.1 Type 325—direct tension indicators for use with Specification A 325 or F 1852 Type I bolts, nuts, and washers.

1.2.2 Type 325–3—direct tension indicators for use with Specification A 325 Type 3 bolts, nuts, and washers.

1.2.3 Type 490—direct tension indicators for use with Specification A 490 or F 2280 bolts, nuts, and washers.

1.2.4 Type 490–3—direct tension indicators for use with Specification A 490 Type 3 bolts, nuts, and washers.

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 A 325 or A 490 Bolts.)

1.4 The following precautionary statement pertains only to the test method 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.

Keywords

compressible-washer-type; direct tension indicators; DTI; indicators; Compressible washer-type indicators; Direct tension indicators (DTI); Fasteners (metal) specifications; Indicators; Structural building materials/applications specifications; Structural fasteners; Tensile properties/testing metallic materials; ICS Number Code 21.060.01 (Fasteners in general)

To find similar documents by ASTM Volume:

01.08 (Fasteners; Rolling Element Bearings)

To find similar documents by classification:

21.060.01 (Fasteners in general)

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Document Number

ASTM-F959-07a

Revision Level

2007A EDITION

Status

Superseded

Modification Type

Revision

Publication Date

Dec. 1, 2007

Document Type

Specification

Page Count

5 pages

Committee Number

F16.02