Metric Thread Gage Handle Sizes

(Sizes M1.6 Through M39)

Thread Size
Taperlock
Reversible
Ring
Setting Plug
M1.6

M1.8

000
1W
1T
000
M2.0

M2.2

000
2W
1T
000
M2.5

M3.0

M3.5

00
2W
1T
00
M4.0
0
2W
1T
0
M4.5

M5.0

M5.5

0
3W
1T
0
M6.0

M7.0

1
3W
2T
1
M8.0

M9.0

1
4W
2T
1
M10.0

M11.0

2
4W
3T
2
M12.0
2
5W
3T
2
M14.0

M15.0

3
6W
4T
3
M16.0

M17.0

M18.0

3
7W
4T
3
M20.0
3
- - -
4T
3
M22.0

M24.0

M25.0

M26.0

M27.0

M28.0

4
- - -
5T
4
M30.0

M32.0

M33.0

M35.0

M36.0

M38.0

5
- - -
6T
5
M39.0
5 1/2
- - -
7T
5 1/2
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