Screw Thread d					M5	M6	M8	M10	M12	M14	M16	M20
P		Pitch	Coarse thread		0.8	1	1.25	1.5	1.75	2	2	2.5
			Fine thread-1		/	/	1	1.25	1.5	1.5	1.5	1.5
			Fine thread-2		/	/	/	1	1.25	/	/	/
b		L≤125			16	18	22	26	30	34	38	46
		125＜L≤200			/	/	28	32	36	40	44	52
		L＞200			/	/	/	/	/	/	57	65
c		min			1	1.1	1.2	1.5	1.8	2.1	2.4	3
da		Form A	max		5.7	6.8	9.2	11.2	13.7	15.7	17.7	22.4
		Form B	max		6.2	7.4	10	12.6	15.2	17.7	20.7	25.7
dc		max			11.8	14.2	18	22.3	26.6	30.5	35	43
ds		max			5	6	8	10	12	14	16	20
		min			4.82	5.82	7.78	9.78	11.73	13.73	15.73	19.67
du		max			5.5	6.6	9	11	13.5	15.5	17.5	22
dw		min			9.8	12.2	15.8	19.6	23.8	27.6	31.9	39.9
e		min			8.71	10.95	14.26	16.5	17.62	19.86	23.15	29.87
f		max			1.4	2	2	2	3	3	3	4
k		max			5.4	6.6	8.1	9.2	11.5	12.8	14.4	17.1
k1		min			2	2.5	3.2	3.6	4.6	5.1	5.8	6.8
r1		min			0.25	0.4	0.4	0.4	0.6	0.6	0.6	0.8
r2		max			0.3	0.4	0.5	0.6	0.7	0.9	1	1.2
r3		min			0.1	0.1	0.15	0.2	0.25	0.3	0.35	0.4
r4		≈			3	3.4	4.3	4.3	6.4	6.4	6.4	8.5
s		max=nominal size			8	10	13	15	16	18	21	27
		min			7.78	9.78	12.73	14.73	15.73	17.73	20.67	26.67
t		max			0.15	0.2	0.25	0.3	0.35	0.45	0.5	0.65
		min			0.05	0.05	0.1	0.15	0.15	0.2	0.25	0.3