ASTM F 959 - 07 Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

American Society for Testing and Materials (ASTM). Current edition approved April 1, 2007. Published April 2007. Originally approved in 1985. Last previous edition approved in 2006 as F 959 – 06. 4 p. 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.