This specification has been declared "NONCURRENT" by the Aerospace Materials Division, SAE, as of October, 2003. It is recommended, therefore, that this specification not be specified for new designs. "NONCURRENT" refers to those specifications which have previously been widely used and which may be required on some existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs. Similar but not necessarily identical products are covered by the following specifications: AMS-QQ-W-428 Type I; ASTM A 229 - Standard Specification for Steel Wire, Oil-Tempered for Mechanical Springs