Plain washers are made of ferrous or non-ferrous metal, plastic or other material as specified. The tolerances indicated in the tables are intended for metal washers only.
The minimum distance from the object to the firstdimension is 10mm (3/8 inch). The minimum spacing between dimensions is 6mm (1/4 inch). There should be a visiblegap between an extension line and the feature to which it refers. Extension lines should extend about 1mm (1/32 inch) beyond the last dimension line. Tolerance Table In Inch - masterslasopa Values on the left side of the table. The inch values show close corresponding English units. The form of the first table carries through to other tables in the standard.
American National Standard Type A Plain Washers - Preferred Sizes ANSI/ASME B18.22.1-1965 (R1998)
Tolerance Table In Inches
Tolerance Table In Inch Pounds
a Nominal washer sizes are intended for use with comparable nominal screw or bolt sizes.
b the 0.734-inch, 1.156-inch, and 1.469-inch outside diameters avoid washers which could be used in coin operated devices.
All dimensions are in inches.
Designation 'N' (narrow) and the Standard Plate 'W' (wide), these sizes as well as all other sizes of Type A Plain Washers are generally specified by ID, OD, and Thickness dimensions.
Location Tolerances: Inside and outside diameters shall be concentric to within the specified inside diameter tolerance.
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Tolerance Table In Inch To Mm
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