Screw Size	Body Diameter	Hex Key Size	Head Height	Head Diameter	Max. Thread Length	Min. Thread Length
No. 0	0.06	0.05	0.06	0.096	5⁄8	3⁄8
No. 1	0.073	1⁄16	0.073	0.118	7⁄8	3⁄8
No. 2	0.086	5⁄64	0.086	0.14	7⁄8	1⁄2
No. 3	0.099	5⁄64	0.099	0.161	7⁄8	1⁄2
No. 4	0.112	3⁄32	0.112	0.183	11⁄8	11⁄16
No. 5	0.125	3⁄32	0.125	0.205	1	11⁄16
No. 6	0.138	7⁄64	0.138	0.226	11⁄8	11⁄16
No. 8	0.164	9⁄64	0.164	0.27	11⁄4	3⁄4
No. 10	0.19	5⁄32	0.19	0.312	13⁄8	15⁄16
No. 12	0.216	5⁄32	0.216	0.345	11⁄4	15⁄16
1⁄4	0.250	3⁄16	1⁄4	3⁄8	11⁄2	15⁄16
5⁄16	0.3125	1⁄4	5⁄16	15⁄32	1-3⁄4	1-1⁄16
3⁄8	0.375	5⁄16	3⁄8	9⁄16	2	1-3⁄16
7⁄16	0.438	3⁄8	7⁄16	21⁄32	2-1⁄4	13⁄16
1⁄2	0.500	3⁄8	1⁄2	3⁄4	2-1⁄2	1-3⁄8
9⁄16	0.5625	7⁄16	9⁄16	27⁄32	2-7⁄16	1-5⁄8
5⁄8	0.625	1⁄2	5⁄8	15⁄16	3	1-5⁄8
3⁄4	0.750	5⁄8	3⁄4	11⁄8	3-1⁄2	1-7⁄8
7⁄8	0.875	3⁄4	7⁄8	15⁄16	3-3⁄4	2-1⁄16
1	1.000	3⁄4	1	11⁄2	4-1⁄2	2-1⁄4
1-1⁄8	1.125	7⁄8	1-1⁄8	111⁄16	4-21⁄32	2-13⁄16
1-1⁄4	1.250	7⁄8	1-1⁄4	17⁄8	5-3⁄32	3-1⁄8
1-1⁄2	1.500	1	1-1⁄2	21⁄4	6-5⁄64	3-3⁄4
1-3⁄4	1.750	11⁄4	1-3⁄4	25⁄8	7-1⁄8	4-3⁄8
2	2.000	11⁄2	2	3	8-7⁄64	5

Metric Socket Head Cap Screws

Screw Size	Body Diameter	Hex Key Size	Head Height	Head Diameter	Max. Thread Length	Min. Thread Length
M2 x 0.4	2.00	1.5	2.00	3.80	12	4
M2.5 x 0.45	2.50	2.0	2.36	4.32	12	5
M3 x 0.5	2.50	2.5	3.00	5.50	35	5
M4 x 0.7	4.00	3.0	4.00	7.00	50	6
M5 x 0.8	5.00	4.0	5.00	8.50	70	6
M6 x 1.0	6.00	5.0	6.00	10.00	110	8
M8 x 1.25	8.00	6.0	8.00	13.00	150	10
M10 x 1.5	10.00	8.0	10.00	16.00	150	10
M12 x 1.75	12.00	10.0	12.00	18.00	150	12
M16 x 2.0	16.00	14.0	16.00	24.00	180	25
M20 x 2.5	20.00	17.0	20.00	30.00	200	30
M24 x 3.0	24.00	19.0	24.00	36.00	260	40
M30 x 3.5	30.00	22.0	30.00	45.00	300	80
M36 x 4.0	36.00	27.0	26.00	54.00	260	80