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SAE MA1759 Revision A, August 1, 1996
Center Hole, Metric
Description / Abstract:
This SAE Metric Aerospace Standard (MA) specifies the drawing
requirements for center holes when center holes are required on the
finished part.
Application:
Centre holes make it possible to install a part between bench or machine centers in the process of manufacturing. With such center holes, it is possible to:
a. Achieve center related runout requirements
b. Simplify manufacture and inspection of some revolution generated parts, namely those featuring multiple concentric diameters requiring several machining operations
Dimensional Standards:
Dimensions and tolerances in this standard are expressed in millimeters and comply with those for Type A center holes per ISO 866 and Type B center holes per ISO 2540.
Application:
Centre holes make it possible to install a part between bench or machine centers in the process of manufacturing. With such center holes, it is possible to:
a. Achieve center related runout requirements
b. Simplify manufacture and inspection of some revolution generated parts, namely those featuring multiple concentric diameters requiring several machining operations
Dimensional Standards:
Dimensions and tolerances in this standard are expressed in millimeters and comply with those for Type A center holes per ISO 866 and Type B center holes per ISO 2540.
SAE MA1759 Revision A, August 1, 1996
Center Hole, Metric