"PURPOSE: To publish established manufacturing tolerances. APPLICATION: Tolerances shown herein are applicable to tube@ rod@ bar@ and shapes. Tolerances wider than standard may be necessary for some shapes; tolerances closer than standard may be possible for others. Tolerances shown herein@ however@ apply unless otherwise agreed upon by purchaser and vendor and apply to all tempers@ unless otherwise noted. The term ""excl"" is used to apply only to the higher figure of the specified range."