Wrench and Socket Drive Chart - Southern Fasteners and Supply

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