β = 15° to 30°w
Dimensions of IS 1364-2 Hexagon Head Screws - Preferred Threads
Thread (d)
M 1.6
M 2
M 2.5
M 3
M 4
M 5
M 6
M 8
M 10
pa
0.35
0.4
0.45
0.5
0.7
0.8
1
1.25
1.5
a
maxb
1.05
1.2
1.35
1.5
2.1
2.4
3
4
4.5
min
0.35
0.4
0.45
0.5
0.7
0.8
1
1.25
1.5
c
max
0.25
0.25
0.25
0.40
0.40
0.50
0.50
0.60
0.60
min
0.10
0.10
0.10
0.15
0.15
0.15
0.15
0.15
0.15
da max
2
2.6
3.1
3.6
4.7
5.7
6.8
9.2
11.2
dw
Product Grade
A min
2.27
3.07
4.07
4.57
5.88
6.88
8.88
11.63
14.63
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
B min
3.28
4.18
5.31
5.88
7.50
8.63
10.89
14.20
17.59
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
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
3.74
4.24
5.54
6.69
B min
0.9
1.2
1.5
1.8
2.6
3.26
3.76
5.06
6.11
kwe
Product Grade
A min
0.68
0.89
1.10
1.31
1.87
2.35
2.70
3.61
4.35
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
B min
2.90
3.70
4.70
5.20
6.64
7.64
9.64
12.57
15.57
Product grade
A
B
nom
min
max
min
max
2
1.8
2.2
-
-
3
2.8
3.2
-
-
4
3.76
4.24
-
-
5
4.76
5.24
-
-
6
5.76
6.24
-
-
8
7.71
8.29
-
-
10
9.71
10.29
-
-
12
11.65
12.35
-
-
16
15.65
16.35
-
-
20
19.58
20.42
18.95
21.05
25
24.58
25.42
23.95
26.05
30
29.58
30.42
28.95
31.05
35
34.5
35.5
33.75
36.25
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
56.25
60
59.4
60.6
58.5
61.50
65
64.4
65.6
63.5
66.50
70
69.4
70.6
68.5
71.50
80
79.4
80.6
78.5
81.50
90
89.3
90.7
88.25
91.75
100
99.3
100.7
98.25
101.75
110
109.3
110.7
108.25
111.75
120
119.3
120.7
118.25
121.75
130
129.2
130.8
128
132
140
139.2
140.8
138
142
150
149.2
150.8
148
152
160
-
-
158
162
180
-
-
178
182
200
-
-
197.7
202.3
Thread (d)
M 12
M 16
M 20
M 24
M 30
M 36
M 42
M 48
M 56
M 64
pa
1.75
2
2.5
3
3.5
4
4.5
5
5.5
6
b ref
maxa
5.3
6
7.5
9
10.5
12
13.5
15
16.5
18
min
1.75
2
2.5
3
3.5
4
4.5
5
5.5
6
c
max
0.60
0.8
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
min
0.15
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.3
0.3
da max
13.7
17.7
22.4
26.4
33.4
39.4
45.6
52.6
63
71
dw
Product Grade
A min
16.63
22.49
28.19
33.61
-
-
-
-
-
-
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
-
-
-
-
-
-
B min
19.85
26.17
32.95
39.55
50.85
60.79
71.3
82.6
93.56
104.86
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
-
-
-
-
-
-
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
B min
7.21
9.71
12.15
14.65
18.28
22.08
25.58
29.58
34.5
39.5
kwe
Product Grade
A min
5.12
6.87
8.6
10.35
-
-
-
-
-
-
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
-
-
-
-
-
-
B min
17.57
23.16
29.16
35.00
45
53.8
63.1
73.1
82.8
92.8
Product grade
A
B
nom
min
max
min
max
2
1.8
2.2
-
-
3
2.8
3.2
-
-
4
3.76
4.24
-
-
5
4.76
5.24
-
-
6
5.76
6.24
-
-
8
7.71
8.29
-
-
10
9.71
10.29
-
-
12
11.65
12.35
-
-
16
15.65
16.35
-
-
20
19.58
20.42
18.95
21.05
25
24.58
25.42
23.95
26.05
30
29.58
30.42
28.95
31.05
35
34.5
35.5
33.75
36.25
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
56.25
60
59.4
60.6
58.5
61.50
65
64.4
65.6
63.5
66.50
70
69.4
70.6
68.5
71.50
80
79.4
80.6
78.5
81.50
90
89.3
90.7
88.25
91.75
100
99.3
100.7
98.25
101.75
110
109.3
110.7
108.25
111.75
120
119.3
120.7
118.25
121.75
130
129.2
130.8
128
132
140
139.2
140.8
138
142
150
149.2
150.8
148
152
160
-
-
158
162
180
-
-
178
182
200
-
-
197.7
202.3
Dimensions of IS 1364-2 Non-Preferred Threads
Thread (d)
M 3.5
M 14
M 18
M 22
M 27
pa
0.6
2
2.5
2.5
3
a
maxa
13
34
42
50
60
min
19
40
48
56
66
c
max
0.40
0.60
0.8
0.8
0.8
min
0.15
0.15
0.2
0.2
0.2
da max
4.1
15.7
20.2
24.4
30.4
dw
Product Grade
A min
5.07
19.64
25.34
31.71
-
B min
4.95
19.15
24.85
31.35
38
e
Product Grade
A min
6.58
23.36
30.14
37.72
-
B min
6.44
22.78
29.56
37.29
45.2
k
nom.
2.4
8.8
11.5
14
17
Product Grade
A max
2.525
8.98
11.715
14.215
-
A min
2.275
8.62
11.285
13.785
-
Product Grade
B max
2.6
9.09
11.85
14.35
17.35
B min
2.2
8.51
11.15
13.65
16.65
kwe
Product Grade
A min
1.59
6.03
7.9
9.65
-
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
-
B min
5.70
20.16
26.16
33.00
40
Product grade
ls and lg fg
A
B
ls
lg
ls
lg
ls
lg
ls
lg
ls
lg
nom
min
max
min
max
min
max
min
max
min
max
min
max
min
max
8
7.71
8.29
-
-
10
9.71
10.29
-
-
12
11.65
12.35
-
-
16
15.65
16.35
-
-
20
19.58
20.42
-
-
25
24.58
25.42
-
-
30
29.58
30.42
-
-
35
34.5
35.5
-
-
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
65
64.4
65.6
63.5
66.5
70
69.4
70.6
68.5
71.5
80
79.4
80.6
78.5
81.5
90
89.3
90.7
88.25
91.75
100
99.3
100.7
98.25
101.75
110
109.3
110.7
108.25
111.75
120
119.3
120.7
118.25
121.75
130
129.2
130.8
128
132
140
139.2
140.8
138
142
150
149.2
150.8
148
152
160
-
-
158
162
180
-
-
178
182
200
-
-
197.7
202.3
Thread (d)
M 33
M 39
M 45
M 52
M 60
pa
3.5
4
4.5
5
5.5
a
maxa
-
-
-
-
-
min
78
90
102
116
-
c
max
0.8
1.0
1.0
1.0
1.0
min
0.2
0.3
0.3
0.3
0.3
da max
36.4
42.4
48.6
56.6
67
dw
Product Grade
A min
-
-
-
-
-
B min
46.55
55.86
64.7
74.2
83.41
e
Product Grade
A min
-
-
-
-
-
B min
55.37
66.44
76.95
88.25
99.21
k
nom.
21
25
28
33
38
Product Grade
A max
-
-
-
-
-
A min
-
-
-
-
-
Product Grade
B max
21.42
25.42
28.42
33.5
38.5
B min
20.58
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