Standard Specification for
Turnbuckles and Shackles
1.1.Scope-This specification covers forged turnbuckles, with and without jam nuts, and shackles for guardrail, sign supports, and similar uses. These items are considered to be available commercially. Not all classes, styles, and types of turnbuckles and shackles that are available commercially are covered by this specification.
126.96.36.199.Type-Turnbuckles covered by this specification shall be forged and of the design specified by the purchaser.
188.8.131.52. Sizes-Turnbuckles covered by this specification shall be of the sizes listed in Table 2, as specified.
184.108.40.206.Shackles shall be one of the classes in Table 1, as specified by the purchaser.
Click below to download AASHTO Designation M 269 pdf free
Click here to download AASHTO Designation: M 268-08 pdf free download