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Home / Resources / Wrench and Socket Drive Chart

Wrench and Socket Drive Chart

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Includes both inch and metric charts that give socket size with corresponding “wrench size” in regular and heavy hex. Also displays “hex key size” in Socket Head C/S and Button/ Flat Soc C/S.

 Inch Size   WRENCH SIZE   HEX KEY SIZE
Regular Hex Heavy Hex Socket Head C/S  Button/ Flat Soc C/S
0 0.050
1 1/16
2 5/64
3 5/64
4 3/32 1/16
5 3/32 5/64
6 1/4 7/64 5/64
8 1/4 9/64 3/32
10 5/16 5/32 1/8
12 5/16
1/4 7/16 3/16 5/32
5/16 1/2 1/4 3/16
3/8 9/16 5/16 7/32
7/16 5/8 3/8 1/4
1/2 3/4 7/8 3/8 5/16
9/16 13/16
5/8 15/16 1-1/16 1/2 3/8
3/4 1-1/8 1-1/4 5/8 1/2
7/8 1-5/16 1-7/16 3/4
1 1-1/2 1-5/8 3/4
1 1/8 1-11/16 1-13/16
1 1/4 1-7/8 2 7/8
1 3/8 2-1/16 2-3/16
1 1/2 2-1/4 2-3/8 1
1 5/8 2-9/16
1 3/4 2-3/4
1 7/8 2-15/16
2 3-1/8
2 1/4 3-1/2
2 1/2 3-7/8
2 3/4 4-1/4
3 4-5/8
3 1/4 5
3 1/2 5-1/4 5-3/8
3 3/4 5-5/8 5-3/4
4 6 6-1/8
 Metric Size   WRENCH SIZE   HEX KEY SIZE
Regular Hex Heavy Hex Socket Head C/S Button/ Flat Soc C/S
0.5
1
1.2
1.4
1.6 3.2 1.5
1.8
2 4 1.5
2.2
2.5 5 2
2.6
3 5.5 2.5 2
3.5
4 7 3 2.5
5 8 4 3
6 10 5 4
7
8 13 6 5
10 16*/17** 8 6
12 18*/19** 21 10 8
14 21*/22** 24
16 24 27 14 10
18 27
20 30 34 17
22 36
24 36 41 19
27 46
30 46 50 22
33
36 55 60 27
39
42 65 32
45
48 75 36

*Indicates ISO standard

**Indicates DIN standard

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