Wrench Spanners - Inches Vs. Mm - The Engineering ToolBox

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Wrench Spanners - Inches vs. mm

Standard SAE U.S. Wrench/Spanner Size (inches)	Metric Wrench/Spanner Size (mm)
1/8	3.18
5/32	3.97
4
3/16	4.76
5
13/64	5.16
7/32	5.56
15/64	6.05
6
1/4	6.35
17/64	6.75
7
9/32	7.14
5/16	7.94
8
11/32	8.73
9
3/8	9.53
10
11
7/16	11.11
15/32	11.91
12
1/2	12.7
13
17/32	13.49
14
9/16	14.29
15
19/32	15.08
5/8	15.88
16
21/32	16.67
17
11/16	17.46
18
19
3/4	19.05
25/32	19.84
20
13/16	20.64
21
22
7/8	22.23
23
29/32	23.02
15/16	23.81
24
31/32	24.61
25
1	25.40
26
1 1/16	26.99
27
28
1 1/8	28.58
29
30
1 3/16	30.16
31
1 1/4	31.75
32
33
1 5/16	33.34
34
1 3/8	34.93
35
36
1 7/16	36.51
38
1 1/2	38.10
39
1 9/16	39.69
40
41
1 5/8	41.28
1 11/16	42.86
1 3/4	44.45
46
1 13/16	46.04
1 7/8	47.63
1 15/16	49.21
50
2	50.80
51
2 1/8	53.96
54
2 1/4	57.15
2 3/8	60.33
2 1/2	63.5

• 1 inch = 25.4 mm
• 1 mm = 0.0394 inch
• Length Units Converter

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Unit Converter

Temperature oC K oF

Length m km in ft yards miles naut miles

Area m2 km2 in2 ft2 miles2 acres

Volume m3 liters in3 ft3 us gal

Weight kgf N lbf

Velocity m/s km/h ft/min ft/s mph knots

Pressure Pa bar atmosphere mm H2O kg/cm2 psi inches H2O

Flow m3/s m3/h US gpm cfm

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