ASTM F959-06
- Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners
- standard by ASTM International, 05/01/2006
- Publisher: ASTM
$26.00$52.80
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 1/2 through 11/2 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.)
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