ASTM F812-12美标螺栓规范.pdf

Designation: F812 − 12 Standard Specification for Surface Discontinuities of Nuts, Inch and Metric Series1 This standard is issued under the fixed designation F812; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope* 2. Referenced Documents 1.1 This specification establishes allowable limits for the 2.1 ASTM Standards:2 various types of surface discontinuities that may occur during F606 Test Methods for Determining the Mechanical Proper- the manufacture and processing