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  • -
  • -
  • -
  • 6#
  • 8#
  • 10#
  • 3/16
  • 12#
  • 1/4N
  • 1/4W
  • 5/16N
  • 5/16W
  • 3/8N
  • 3/8W
  • 7/16N
  • 7/16W
  • 1/2N
  • 1/2W
  • 9/16N
  • 9/16W
  • 5/8N
  • 5/8W
  • 3/4N
  • 3/4W
  • 7/8N
  • 7/8W
  • 1N
  • 1W
  • 1-1/8N
  • 1-1/8W
  • 1-1/4N
  • 1-1/4W
  • 1-3/8N
  • 1-3/8W
  • 1-1/2N
  • 1-1/2W
  • 1-5/8
  • 1-3/4
  • 1-7/8
  • 2
  • 2-1/4
  • 2-1/2
  • 2-3/4
  • 3
ANSI B 18.22.1 - 1965 R1998 Preferred Sizes of Type A Plain Washers [Table 1A] (ASTM A325 / ANSI 1060)
Nominal Diameter -
Nominal Size
Series
d Nominal Size
max
min
dc Nominal Size
max
min
h Nominal Size
max
min
-
-
0.078
0.078
0.073
0.188
0.188
0.183
0.020
0.025
0.016