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(Non-preferred) dimensions in parentheses.

Hexagon Nuts - Regular【Table 1-3】

JIS B 1181 - 1993

Display drawing:

Screw Thread
d

(M7)

M10

M12

(M14)

M16

(M18)

M20

(M22)

M24

(M27)

M30

P	Coarse thread
P	Fine pitch
m	Nominal Size
	max
	min
m₁	Nominal Size
	max
	min
s	max
s	min
e	≈
d_a	≈

1	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3	3	3.5
-	-	1	1.25	1.25	1.5	1.5	1.5	1.5	1.5	2	2	2
5	5.5	6.5	8	10	11	13	15	16	18	19	22	24
5.6	6.1	7.3	8.8	10.8	11.9	13.9	15.9	16.9	18.9	20	23	25
4.4	4.9	5.7	7.2	9.2	10.1	12.1	14.1	15.1	17.1	18	21	23
3.6	4.2	5	6	7	8	10	11	12	13	14	16	18
4.2	4.8	5.6	6.6	7.8	8.8	10.8	11.9	12.9	13.9	14.9	16.9	18.9
3	3.6	4.4	5.4	6.2	7.2	9.2	10.1	11.1	12.1	13.1	15.1	17.1
10	11	13	17	19	22	24	27	30	32	36	41	46
9.4	10.3	12.3	16.3	18.2	21.2	23.2	26.2	29.2	31	35	40	45
11.5	12.7	15	19.6	21.9	25.4	27.7	31.2	34.6	37	41.6	47.3	53.1
9.8	10.8	12.5	16.5	18	21	23	26	29	31	34	39	44

Screw Thread
d

(M33)

M36

(M39)

M42

(M45)

M48

(M52)

M56

(M60)

M64

(M68)

M72

(M76)

P	Coarse thread
P	Fine pitch
m	Nominal Size
	max
	min
m₁	Nominal Size
	max
	min
s	max
s	min
e	≈
d_a	≈

3.5	4	4	4.5	4.5	5	5	5.5	5.5	6	6	-	-
2	3	3	-	-	-	-	-	-	-	-	6	6
26	29	31	34	36	38	42	45	48	51	54	58	61
27	30	32.2	35.2	37.2	39.2	43.2	46.2	49.2	52.5	55.5	59.5	62.5
25	28	29.8	32.8	34.8	36.8	40.8	43.8	46.8	49.5	52.5	56.5	59.5
20	21	23	25	27	29	31	34	36	38	40	42	46
21	22	24	26	28	30	32.2	35.2	37.2	39.2	41.2	43.2	47.2
19	20	22	24	26	28	29.8	32.8	34.8	36.8	38.8	40.8	44.8
50	55	60	65	70	75	80	85	90	95	100	105	110
49	53.8	58.8	63.8	68.8	73.8	78.8	83.6	88.6	93.6	98.6	103.6	108.6
57.7	63.5	69.3	75	80.8	86.5	92.4	98.1	104	110	115	121	127
48	53	57	62	67	72	77	82	87	92	97	102	107

Screw Thread
d

M80

(M85)

M90

(M95)

M100

(M105)

M110

(M115)

(M120)

M125

(M130)

P	Coarse thread
P	Fine pitch
m	Nominal Size
	max
	min
m₁	Nominal Size
	max
	min
s	max
s	min
e	≈
d_a	≈

-	-	-	-	-	-	-	-	-	-	-
6	6	6	6	6	6	6	6	6	6	6
64	68	72	76	80	84	88	92	96	100	104
65.5	69.5	73.5	77.5	81.5	85.8	89.8	93.8	97.8	101.8	105.8
62.5	66.5	70.5	74.5	78.5	82.2	86.2	90.2	94.2	98.2	102.2
48	50	54	57	60	63	65	69	72	76	78
49.2	51.2	55.5	58.5	61.5	64.5	66.5	70.5	73.5	77.5	79.5
46.8	48.8	52.5	55.5	58.5	61.5	63.5	67.5	70.5	74.5	76.5
115	120	130	135	145	150	155	165	170	180	185
113.6	118.6	128.4	133.4	143.4	148.4	153.4	163.4	168.4	178.4	183.2
133	139	150	156	167	173	179	191	196	208	214
112	116	126	131	141	146	151	161	166	176	181

Alternative history

JIS B 1181 - 1993 JIS B 1181 - 2001

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