This specification has been declared "CANCELLED" by the Aerospace Materials Division, SAE, as of June 2007, and has been superseded by AMS 2251. The requirements of the latest issue of AMS 2253 shall be fulfilled whenever reference is made to the cancelled MAM 2251. By this action, this document will remain listed in the Numerical Section of the Index of the Aerospace Materials Specifications noting that is it superseded by AMS 2251. This specification covers established metric manufacturing tolerances applicable to low-alloy steel bars ordered to metric dimensions. These tolerances apply to all conditions, unless otherwise noted. The term "exclusive" is used to apply to the higher fatigue of the specified range. No clear cut demarcation is available to differentiate between bar and wire products, so no definitions of these products are included.