IS 1364-1

β = 15° to 30°
Point shall be chamfered or for threads ≤ M4 may be as-rolled (sheared end)
Incomplete thread u ≤ 2P
Raferee datum for d_w
Maximum underhead fillet

Dimensions of IS 1364-1 Hexagon Head Bolts - Preferred Threads

Product grade					l_s and l_g f_g
Thread (d)					M 1.6		M 2		M 2.5		M 3		M 4		M 5		M 6		M 8		M 10
p^a					0.35		0.4		0.45		0.5		0.7		0.8		1		1.25		1.5
b ref				a	9		10		11		12		14		16		18		22		26
				b	15		16		17		18		20		22		24		28		32
				c	28		29		30		31		33		35		37		41		45
c				max	0.25		0.25		0.25		0.40		0.40		0.50		0.50		0.60		0.60
c				min	0.10		0.10		0.10		0.15		0.15		0.15		0.15		0.15		0.15
d_a max					2		2.6		3.1		3.6		4.7		5.7		6.8		9.2		11.2
d_s		nom=max			1.60		2.00		2.50		3.00		4.00		5.00		6.00		8.00		10.00
		Product Grade		A min	1.46		1.86		2.36		2.86		3.82		4.82		5.82		7.78		9.78
		Product Grade		B min	1.35		1.75		2.25		2.75		3.70		4.70		5.70		7.64		9.64
d_w		Product Grade		A min	2.27		3.07		4.07		4.57		5.88		6.88		8.88		11.63		14.63
d_w		Product Grade		B min	2.3		2.95		3.95		4.45		5.74		6.74		8.74		11.47		14.47
e		Product Grade		A min	3.41		4.32		5.45		6.01		7.66		8.79		11.05		14.38		17.77
e		Product Grade		B min	3.28		4.18		5.31		5.88		7.50		8.63		10.89		14.20		17.59
lf max.					0.6		0.8		1		1		1.2		1.2		1.4		2		2
k		nom.			1.1		1.4		1.7		2		2.8		3.5		4		5.3		6.4
		Product Grade		A max	1.225		1.525		1.825		2.125		2.925		3.65		4.15		5.45		6.58
		Product Grade		A min	0.975		1.275		1.575		1.875		2.675		3.35		3.85		5.15		6.22
		Product Grade		B max	1.3		1.6		1.9		2.2		3.0		3.26		4.24		5.54		6.69
		Product Grade		B min	0.9		1.2		1.5		1.8		2.6		2.35		3.76		5.06		6.11
kw^e		Product Grade		A min	0.68		0.89		1.10		1.31		1.87		2.35		2.70		3.61		4.35
kw^e		Product Grade		B min	0.63		0.84		1.05		1.26		1.82		2.28		2.63		3.54		4.28
r min					0.1		0.1		0.1		0.1		0.2		0.2		0.25		0.4		0.4
s		nom = max			3.20		4.00		5.00		5.50		7.00		8.00		10.00		13.00		16.00
		Product Grade		A min	3.02		3.82		4.82		5.32		6.78		7.78		9.78		12.73		15.73
		Product Grade		B min	2.90		3.70		4.70		5.20		6.64		7.64		9.64		12.57		15.57
A			B		l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g
nom	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max
12	11.65	12.35	–	–	1.2	3
16	15.65	16.35	–	–	5.2	7	4	6	2.75	5
20	19.58	20.42	18.95	21.05			8	10	6.75	9	5.5	8
25	24.58	25.42	23.95	26.05					11.75	14	10.5	13	7.5	11	5	9
30	29.58	30.42	28.95	31.05							15.5	18	12.5	16	10	14	7	12
35	34.5	35.5	33.75	36.25									17.5	21	15	19	12	17
40	39.5	40.5	38.75	41.25									22.5	26	20	24	17	22	11.75	18
45	44.5	45.5	43.75	46.25											25	29	22	27	16.75	23	11.5	19
50	49.5	50.5	48.75	51.25											30	34	27	32	21.75	28	16.5	24
55	54.4	55.6	53.5	56.25													32	37	26.75	33	21.5	29
60	59.4	60.6	58.5	61.50													37	42	31.75	38	26.5	34
65	64.4	65.6	63.5	66.50															36.75	43	31.5	39
70	69.4	70.6	68.5	71.50															41.75	48	36.5	44
80	79.4	80.6	78.5	81.50															51.75	58	46.5	54
90	89.3	90.7	88.25	91.75																	56.5	64
100	99.3	100.7	98.25	101.75																	66.5	74
110	109.3	110.7	108.25	111.75
120	119.3	120.7	118.25	121.75

Product Grade

Product grade					l_s and l_g f_g
Thread (d)					M 12		M 16		M 20		M 24		M 30		M 36		M 42		M 48		M 56		M 64
p^a					1.75		2		2.5		3		3.5		4		4.5		5		5.5		6
b ref				a	30		38		46		54		66		–		–		–		–		–
				b	36		44		52		60		72		84		96		108		–		–
				c	49		57		65		73		85		97		109		121		137		153
c				max	0.60		0.8		0.8		0.8		0.8		0.8		1.0		1.0		1.0		1.0
c				min	0.15		0.2		0.2		0.2		0.2		0.2		0.3		0.3		0.3		0.3
d_a max					13.7		17.7		22.4		26.4		33.4		39.4		45.6		52.6		63		71
d_s		nom=max			12.00		16.00		20.00		24.00		30.00		36.00		42.00		48.00		56.00		64.00
		A min	11.73		15.73		19.67		23.67		–		–		–		–		–		–
		B min	11.57		15.57		19.48		23.48		29.48		35.38		41.38		47.38		55.26		63.26
d_w		Product Grade		A min	16.63		22.49		28.19		33.61		–		–		–		–		–		–
d_w		Product Grade		B min	16.47		22		27.7		33.25		42.75		51.11		59.95		69.45		78.66		88.16
e		Product Grade		A min	20.03		26.75		33.53		39.98		–		–		–		–		–		–
e		Product Grade		B min	19.85		26.17		32.95		39.55		50.85		60.79		71.3		82.6		93.56		104.86
lf max.					3		3		4		4		6		6		8		10		12		13
k		nom.			7.5		10		12.5		15		18.7		22.5		26		30		35		40
		Product Grade		A max	7.68		10.18		12.715		15.215		–		–		–		–		–		–
		Product Grade		A min	7.32		9.82		12.285		14.785		–		–		–		–		–		–
		Product Grade		B max	7.79		10.29		12.85		15.35		19.12		22.92		26.42		30.42		35.5		40.5
		Product Grade		B min	7.21		9.71		12.15		14.65		18.28		22.08		25.58		29.58		34.5		39.5
kw^e		Product Grade		A min	5.12		6.87		8.6		10.35		–		–		–		–		–		–
kw^e		Product Grade		B min	5.05		6.8		8.51		10.26		12.8		15.46		17.91		20.71		24.15		27.65
r min					0.6		0.6		0.8		0.8		1		1		1.2		1.6		2		2
s		nom = max			18.00		24.00		30.00		36.00		46		55.0		65.0		75.0		85.0		95.0
		Product Grade		A min	17.73		23.67		29.67		35.38		–		–		–		–		–		–
		Product Grade		B min	17.57		23.16		29.16		35.00		45		53.8		63.1		73.1		82.8		92.8
A			B		l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g
nom	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max
50	49.5	50.5	–	–	11.25	20
55	54.4	55.6	53.5	56.5	16.25	25
60	59.4	60.6	58.5	61.5	21.25	30
65	64.4	65.6	63.5	66.5	26.25	35	17	27
70	69.4	70.6	68.5	71.5	31.25	40	22	32
80	79.4	80.6	78.5	81.5	41.25	50	32	42	21.5	34
90	89.3	90.7	88.25	91.75	51.25	60	42	52	31.5	44	21	36
100	99.3	100.7	98.25	101.75	61.25	70	52	62	41.5	54	31	46
110	109.3	110.7	108.25	111.75	71.25	80	62	72	51.5	64	41	56	26.5	44
120	119.3	120.7	118.25	121.75	81.25	90	72	82	61.5	74	51	66	36.5	54
130	129.2	130.8	128	132			76	86	65.5	78	55	70	40.5	58
140	139.2	140.8	138	142			86	96	75.5	88	65	80	50.5	68	36	56
150	149.2	150.8	148	152			96	106	85.5	98	75	90	60.5	78	46	66
160			158	162			106	116	95.5	108	85	100	70.5	88	56	76	41.5	64
180			178	182					115.5	128	105	120	90.5	108	76	96	61.5	84	47	72
200			197.7	202.3					135.5	148	125	140	110.5	128	96	116	81.5	104	67	92
220			217.7	222.3							132	147	117.5	135	103	123	88.5	111	74	99	55.5	83
240			237.7	242.3							152	167	137.5	155	123	143	106.5	131	94	119	75.5	103
260			257.7	262.6									157.5	175	143	163	128.5	151	114	139	95.5	123	77	107
280			277.4	282.6									177.5	195	163	183	148.5	171	134	159	115.5	143	97	127
300			297.4	302.6									197.5	215	183	203	168.5	191	154	179	135.5	163	117	147
320			317.5	322.85											203	223	188.5	211	174	199	155.5	183	137	167
340			337.5	342.85											223	243	208.5	231	194	219	175.5	203	157	187
360			357.5	362.85											243	263	228.5	251	214	239	195.5	223	177	207
380			377.15	382.85													248.5	271	234	259	215.5	243	197	227
400			397.15	402.85													268.5	291	254	279	235.5	263	217	247
420			416.85	423.15													288.5	311	274	299	255.5	283	237	267
440			436.85	443.15													308.5	331	294	319	275.5	303	257	287
460			456.85	463.15															314	339	295.5	323	277	307
480			476.85	483.15															334	359	315.5	343	297	327
500			496.85	503.15																	335.5	363	317	347

Dimensions of IS 1364-1 Non-Preferred Threads

Product grade					l_s and l_g f_g
Thread (d)					M 3.5		M 14		M 18		M 22		M 27
p^a					0.6		2		2.5		2.5		3
b ref				a	13		34		42		50		60
				b	19		40		48		56		66
				c	32		53		61		69		79
c				max	0.40		0.60		0.8		0.8		0.8
c				min	0.15		0.15		0.2		0.2		0.2
d_a max					4.1		15.7		20.2		24.4		30.4
d_s		nom=max			3.50		14.00		18.00		22.00		27.00
		Product Grade		A min	3.32		13.73		17.73		21.67		–
		Product Grade		B min	3.20		13.57		17.57		21.48		26.48
d_w		Product Grade		A min	5.07		19.64		25.34		31.71		–
d_w		Product Grade		B min	4.95		19.15		24.85		31.35		38
e		Product Grade		A min	6.58		23.36		30.14		37.72		–
e		Product Grade		B min	6.44		22.78		29.56		37.29		45.2
lf max.					1		3		3		4		6
k		nom.			2.4		8.8		11.5		14		17
		Product Grade		A max	2.525		8.98		11.715		14.215		–
		Product Grade		A min	2.275		8.62		11.285		13.785		–
		Product Grade		B max	2.6		9.09		11.85		14.35		17.35
		Product Grade		B min	2.2		8.51		11.15		13.65		16.65
kw^e		Product Grade		A min	1.59		6.03		7.9		9.65		–
kw^e		Product Grade		B min	1.54		5.96		7.81		9.56		11.66
r min					0.1		0.6		0.6		0.8		1
s		nom = max			6.00		21.00		27.00		34.00		41
		Product Grade		A min	5.82		20.67		26.67		33.38		–
		Product Grade		B min	5.70		20.16		26.16		33.00		40
A			B		l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g
nom	min	max	min	max	min	max	min	max	min	max	min	max	min	max
20	19.58	20.42	–	–	4	7
25	24.58	25.42	–	–	9	12
30	29.58	30.42	–	–	14	17
35	34.5	35.5	–	–	19	22
40	39.5	40.5	38.75	41.25
45	44.5	45.5	43.75	46.25
50	49.5	50.5	48.75	51.25
55	54.4	55.6	53.5	56.5
60	59.4	60.6	58.5	61.5			16	26
65	64.4	65.6	63.5	66.5			21	31
70	69.4	70.6	68.5	71.5			26	36	15.5	28
80	79.4	80.6	78.5	81.5			36	46	25.5	38
90	89.3	90.7	88.25	91.75			46	56	35.5	48	27.5	40
100	99.3	100.7	98.25	101.75			56	66	45.5	58	37.5	50	25	40
110	109.3	110.7	108.25	111.75			66	76	55.5	68	47.5	60	35	50
120	119.3	120.7	118.25	121.75			76	86	65.5	78	57.5	70	45	60
130	129.2	130.8	128	132			80	90	69.5	82	61.5	74	49	64
140	139.2	140.8	138	142			90	100	79.5	92	71.5	84	59	74
150	149.2	150.8	148	152					89.5	102	81.5	94	69	84
160	–	–	158	162					99.5	112	91.5	104	79	94
180	–	–	178	182					119.5	132	111.5	124	99	114
200	–	–	197.7	202.3							131.5	144	119	134
220	–	–	217.7	222.3							138.5	151	126	141
240	–	–	237.7	242.3									146	161
260	–	–	257.4	262.6									166	181

Product grade					l_s and l_g f_g
Thread (d)					M 33		M 39		M 45		M 52		M 60
p^a					3.5		4		4.5		5		5.5
b ref				a	–		–		–		–		–
				b	78		90		102		116		–
				c	91		103		115		129		145
c				max	0.8		1.0		1.0		1.0		1.0
c				min	0.2		0.3		0.3		0.3		0.3
d_a max					36.4		42.4		48.6		56.6		67
d_s		nom=max			33.00		39.00		45.00		52.00		60.00
		Product Grade		A min	–		–		–		–		–
		Product Grade		B min	32.38		38.38		44.38		51.26		59.26
d_w		Product Grade		A min	–		–		–		–		–
d_w		Product Grade		B min	46.55		55.86		64.7		74.2		83.41
e		Product Grade		A min	–		–		–		–		–
e		Product Grade		B min	55.37		66.44		76.95		88.25		99.21
lf max.					6		6		8		10		12
k		nom.			21		25		28		33		38
		Product Grade		A max	–		–		–		–		–
		Product Grade		A min	–		–		–		–		–
		Product Grade		B max	21.42		25.42		28.42		33.5		38.5
		Product Grade		B min	20.58		24.58		27.58		32.5		37.5
kw^e		Product Grade		A min	–		–		–		–		–
kw^e		Product Grade		B min	14.41		17.21		19.31		22.75		26.25
r min					1		1		1.2		1.6		2
s		nom = max			50		60.0		70.0		80.00		90.0
		Product Grade		A min	–		–		–		–		–
		Product Grade		B min	49		58.8		68.1		78.1		87.8
A			B		l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g	l_s	l_g
nom	min	max	min	max	min	max	min	max	min	max	min	max	min	max
130	129.2	130.8	128	132	34.5	52
140	139.2	140.8	138	142	44.5	62
150	149.2	150.8	148	152	54.5	72	40	60
160	–	–	158	162	64.5	82	50	70
180	–	–	178	182	84.5	102	70	90	55.5	78
200	–	–	197.7	202.3	104.5	122	90	110	75.5	98	59	84
220	–	–	217.7	222.3	111.5	129	97	117	82.5	105	66	91
240	–	–	237.7	242.3	131.5	149	117	137	102.5	125	86	111	67.5	95
260	–	–	257.4	262.6	151.5	169	137	157	122.5	145	106	131	87.5	115
280	–	–	277.4	282.6	171.5	189	157	177	142.5	165	126	151	107.5	135
300	–	–	297.4	302.6	191.5	209	177	197	162.5	185	146	171	127.5	155
320	–	–	317.15	322.85	211.5	229	197	217	182.5	205	166	191	147.5	175
340	–	–	337.15	342.85			217	237	202.5	225	186	211	167.5	195
360	–	–	357.15	362.85			237	257	222.5	245	206	231	187.5	215
380	–	–	377.15	382.85			257	277	242.5	265	226	251	207.5	235
400	–	–	397.15	402.85					262.5	285	246	271	227.5	255
420	–	–	416.85	423.15					282.5	305	266	291	247.5	275
440	–	–	436.85	443.15					302.5	325	286	311	267.5	295
460	–	–	456.85	463.15							306	331	287.5	315
480	–	–	476.85	483.15							326	351	307.5	335
500	–	–	496.85	503.15									327.5	355

Note :
Popular lengths are declined in term of ls and lg
for product grade A, above the dashed, stepped line;
for product grade B, below this stepped line;

p is the pitch of the thread.
For length lnom ≤ 125mm
For length 125mm < lnom ≤ 200mm
For length lnom > 200mm
kw.min = 0.7 kmin
lg.max = lnom -h
ls, min = lg.max -5p
lg is the minimum grip length.

Specifications and reference standards

Material		Steel	Stainless steel	Non-ferrous metal
General Requirements	International Standard	ISO 8992
Thread	Tolerance	86
Thread	International Standards	ISO 724, ISO 965-1
Mechanical Properties	Property Class^a	d <3 mm: as agreed 3mm ≤ d ≤ 39 mm: 5.6, 8.8, 9.8, 10.9 d > 39 mm: as agreed	d ≤ 24 mm: A2-70, A4-70 24mm < d ≤ 39 mm: A2-50, A4-50 d > 39 mm: as agreed	Materials specified in ISO 8839
Mechanical Properties	International Standard	3mm ≤ d ≤ 39mm : ISO 898-1 d < 3mm and d > 39mm: as agreed	d ≤ 39mm : ISO 3506-1 d > 39mm: as agreed	Materials specified in ISO 8839
Tolerances	Product grade	For d ≤ 24mm and l ≤ 10 d or 150mm^b:A For d > 24mm or l > 10 d or 150mm^b:B
Tolerances	International Standard	ISO 4759-1
Finish and/or coating		As Processed Requirements for electroplating are converted in ISO 4042. Requirements for non-electrolytically applied zinc flake coatings are converted in ISO 10683 If different electroplating requirements are desired or if requirements are needed for other finishes, they should be agreed between custom and supplier. Limits for surface discontinuities are covered in ISO 6157-1	Plain	Plain Requirements for electroplating are covered in ISO 4042.
Acceptability		For acceptance procedure, see ISO 3269
a For other property classes see ISO 898-1 for steel and ISO 3506-1 for stainless steel respectively. b Whichever is shorter.

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