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Scope: Establish common practice for specifying acceptable limits for burrs on flat washers.
Scope: Establish common practice for specifying acceptable limits for flatness on flat washers.
Measuring variation from flatness
Variation from flatness is measured by laying the part on a surface plate with the convex side up and measuring the maximum rise. The "roll over" one the edges of the washer is not to be measured.
Note: Washer faces shall be parallel within 0.002/inch
Parts that are relatively thin in relation to their outside diameter may be subjected to the following pressure when measuring flatness.
Subject: measuring washer dimensions
Scope: Establish common inspection parameters.
Subject: O.D. and I.D tolerances and concentricity
Scope: To establish common practice for specifying tolerances of outside and inside diameters and concentricity of washers.
O.D. and I.D. tolerances