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Hex Bolt For Pipe Flange Connection - PN designated

GB /T 9125.1 - 2020

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^*Models with different eras.

Thread Size
d

M10

M12

M14

M16

M20

M24

M27

M30

P	Pitch
b	L≤125
	125＜L≤200
	L＞200
c	max
	min
d_a	max
d_s	max=nominal size
	Grade A	min
	Grade B	min
d_w	Grade A	min
	Grade B	min
e	Grade A	min
	Grade B	min
L₁	max
k	Nominal Size
	Grade A	max
		min
	Grade B	max
		min
k₁	Grade A	min
	Grade B	min
r	min
s	max=nominal size
	Grade A	min
	Grade B	min

1.5	1.75	2	2	2.5	3	3	3.5
26	30	34	38	46	54	60	66
32	36	40	44	52	60	66	72
45	49	53	57	65	73	79	85
0.6	0.6	0.6	0.8	0.8	0.8	0.8	0.8
0.15	0.15	0.15	0.2	0.2	0.2	0.2	0.2
11.2	13.7	15.7	17.7	22.4	26.4	30.4	33.4
10	12	14	16	20	24	27	30
9.78	11.73	13.73	15.73	19.67	23.67	/	/
9.64	11.57	13.57	15.57	19.48	23.48	26.48	29.48
14.63	16.63	19.64	22.49	28.19	33.61	/	/
14.47	16.47	19.15	22	27.7	33.25	38	42.75
17.77	20.03	23.36	26.75	33.53	39.98	/	/
17.59	19.85	22.78	26.17	32.95	39.55	45.2	50.85
2	3	3	3	4	4	6	6
6.4	7.5	8.8	10	12.5	15	17	18.7
6.58	7.68	8.98	10.18	12.715	15.215	/	/
6.22	7.32	8.62	9.82	12.285	14.785	/	/
6.69	7.79	9.09	10.29	12.85	15.35	17.35	19.12
6.11	7.21	8.51	9.71	12.15	14.65	16.65	18.28
4.35	5.12	6.03	6.87	8.6	10.35	/	/
4.28	5.05	5.96	6.8	8.51	10.26	11.66	12.8
0.4	0.6	0.6	0.6	0.8	0.8	1	1
16	18	21	24	30	36	41	46
15.73	17.73	20.67	23.67	29.67	35.38	/	/
15.57	17.57	20.16	23.16	29.16	35	40	45

Thread Size
d

M33

M36

M39

M42

M45

M48

M52

M56

P	Pitch
b	L≤125
	125＜L≤200
	L＞200
c	max
	min
d_a	max
d_s	max=nominal size
	Grade A	min
	Grade B	min
d_w	Grade A	min
	Grade B	min
e	Grade A	min
	Grade B	min
L₁	max
k	Nominal Size
	Grade A	max
		min
	Grade B	max
		min
k₁	Grade A	min
	Grade B	min
r	min
s	max=nominal size
	Grade A	min
	Grade B	min

3.5	3	3	3	3	3	4	4
/	/	/	/	/	/	/	/
78	84	90	96	102	108	116	/
91	97	103	109	115	121	129	137
0.8	0.8	1	1	1	1	1	1
0.2	0.2	0.3	0.3	0.3	0.3	0.3	0.3
36.4	39.4	42.4	45.6	48.6	52.6	56.6	63
33	36	39	42	45	48	52	56
/	/	/	/	/	/	/	/
32.38	35.38	38.38	41.38	44.38	47.38	51.26	55.26
/	/	/	/	/	/	/	/
46.55	51.11	55.86	59.95	64.7	69.45	74.2	78.66
/	/	/	/	/	/	/	/
55.37	60.79	66.44	71.3	76.95	82.6	88.25	93.56
6	6	6	8	8	10	10	12
21	22.5	25	26	28	30	33	35
/	/	/	/	/	/	/	/
/	/	/	/	/	/	/	/
21.42	22.92	25.42	26.42	28.42	30.42	33.5	35.5
20.58	22.08	24.58	25.58	27.58	29.58	32.5	34.5
/	/	/	/	/	/	/	/
14.41	15.46	17.21	17.91	19.31	20.71	22.75	24.15
1	1	1	1.2	1.2	1.6	1.6	2
50	55	60	65	70	75	80	85
/	/	/	/	/	/	/	/
49	53.8	58.8	63.1	68.1	73.1	78.1	82.8

Alternative history

GB /T 9125 - 2003 GB /T 9125 - 2010 GB /T 9125.1PN - 2020

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