Wrench Configuration, 12 Spline Drive, Metric MA1586A

DOI: https://doi.org/10.4271/MA1586A

Issuing Committee: EG-1B Hand Tools Committee

Publisher: SAE International

Pages: 3

Rationale: MA1586A has been reaffirmed to comply with the SAE five-year review policy. Variations in size, form, and position of the 12 splines are permitted, providing the actual profile falls within the maximum and minimum material conditions shown. Tools conforming to this standard will wrench fasteners having wrenching configurations per MA 1549. Nominal wrenching size value corresponds to maximum width across flats of comparable hexagon and double hexagon 02 Point) wrenching configurations. The wrench will fit all three configurations.