GMNA - GM290M
Mechanical and Quality Requirements for Externally Threaded Fasteners
|Publication Date:||1 April 1989|
This standard covers the mechanical and quality requirements for nine grades of steel bolts, screws, studs, sems, and U-bolts with hardness of HRC 39 maximum. Tapping screws, thread rolling screws and self drilling tapping screws are not included.