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

Hexagon flange bolt is a bolt composed of hexagon head, flange plate and screw, which is used to fasten and connect two through holes together with nuts.   1、 Do you have any characteristics   The common bolt head is thick, difficult to deform, and easy to loosen after tightening.   Compared with ordinary bolts, hexagon flange bolts have larger ratio of support area to stress area, higher preload, better relaxation performance, and high precision and durability of decoration. The hexagon flange bolt head is smaller with holes, and the slotted bolt can be locked more firmly in case of slight deformation; The flange plate can be divided into flat bottom and toothed shape according to the needs of the industry, and the latter can play a more fastening role.