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GMW GMW25 Mechanical Properties and Material Requirements for Externally Threaded Fasteners
standard by General Motors Worldwide , 12/01/2003
1 Scope
This specification specifies the mechanical properties and material requirements for externally threaded fasteners in nominal thread diameters of M39 in addition to the other specified details in ISO 898-1:1999(E). This specification is based upon ISO 898-1 but it (GMW25) does not include 9.8, 10.9 and 12.9 property classes of ISO 898-1.