Bolt Inch to Metric

Written by Jerry Ratzlaff on . Posted in Fastener

  • Metric = Millimeter
  • US = Inch (nearest 32nd)
Metric (mm)US (in)
2 3/32
2.5 3/32
3 1/8
4 5/32
5 3/16
6 1/4
8 5/16
10 13/32
12 15/32
14 9/16
16 5/8
18 23/32
20 25/32
25 1
30 1 3/16
35 1 3/8
40 1 9/16
45 1 3/4
50 2
55 2 3/16
60 2 3/8
65 2 9/16
70 2 3/4
75 2 15/16
80 3 1/8
85 3 3/8
90 3 9/16
95 3 3/4
100 3 15/16
110 4 5/16
120 4 3/4
130 5 1/8
140 5 1/2
150 5 7/8
160 6 3/16
170 6 11/16
180 7 1/16
190 7 1/2
Metric (mm)US (in)