Plain Washers A

Inch

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General
Nominal
Washer
Size		 Type Type
Code		 T
Thickness
Basic		 T
Thickness
MAX / MIN		 A
Inside Diameter
Basic		 A
Inside Diameter
+ / -		 B
Outside Diameter
Basic		 B
Outside Diameter
+ / -
0 - / - - .020 .025 / .016 .078 .000 / .005 .188 .000 / .005
2 - / - - .020 .025 / .016 .094 .000 / .005 .250 .000 / .005
4 - / - - .032 .040 / .025 .125 .008 / .005 .312 .008 / .005
6 - .138 - - .049 .065 / .036 .156 .008 / .005 .375 .015 / .005
8 - .164 - - .049 .065 / .036 .188 .008 / .005 .438 .015 / .005
10 - .190 - - .049 .065 / .036 .219 .008 / .005 .500 .015 / .005
3/16 - .188 - - .049 .065 / .036 .250 .015 / .005 .562 .015 / .005
12 - .216 - - .065 .080 / .051 .250 .015 / .005 .562 .015 / .005
1/4 - .250 Narrow NAR .065 .080 / .051 .281 .015 / .005 .625 .015 / .005
1/4 - .250 Wide WIDE .065 .080 / .051 .312 .015 / .005 .734 .015 / .007
5/16 - .312 Narrow NAR .065 .080 / .051 .344 .015 / .005 .688 .015 / .007
5/16 - .312 Wide WIDE .083 .104 / .064 .375 .015 / .005 .875 .030 / .007
3/8 - .375 Narrow NAR .065 .080 / .051 .406 .015 / .005 .812 .015 . 007
3/8 - .375 Wide WIDE .083 .104 / .064 .438 .015 / .005 1.000 .030 / .007
7/16 - .438 Narrow NAR .065 .080 / .051 .469 .015 / .005 .922 .015 / .007
7/16 - .438 Wide WIDE .083 .104 / .064 .500 .015 / .005 1.250 .030 / .007
1/2 - .500 Narrow NAR .095 .121 / .074 .531 .015 / .005 1.062 .030 / .007
1/2 - .500 Wide WIDE .109 .132 / .086 .562 .015 / .005 1.375 .030 / .007
9/16 - .562 Narrow NAR .095 .121 / .074 .594 .015 / .005 1.156 .030 / .007
9/16 - .562 Wide WIDE .109 .132 / .086 .625 .015 / .005 1.469 .030 / .007
5/8 - .625 Narrow NAR .095 .121 / .074 .656 .030 / .007 1.312 .030 / .007
5/8 - .625 Wide WIDE .134 .160 / .108 .688 .030 / .007 1.750 .030 / .007
3/4 - .750 Narrow NAR .134 .160 / .108 .812 .030 / .007 1.469 .030 / .007
3/4 - .750 Wide WIDE .148 .177 / .122 .812 .030 / .007 2.000 .030 / .007