Wrench and Socket Drive Chart - Southern Fasteners and Supply

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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
Inch 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
Metric 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