- Technology Driven, High Performance Fasteners
- Sonipat, Haryana India
- sales@bigboltnut.com
ASME B18.2.1 Grade B8M
|
Nominal or basic product diameter |
Unit |
Body diameter |
Width across flats (F) |
Width across corner (G) |
Head Height (H) |
Full threading length (LT) |
da (max) |
dw (min) |
D (major) 2A |
D1(pitch) 2A |
D2 (minor) MIN. 2A |
R |
c |
b |
|||||||||||||
|
inch |
inch |
UNC |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
<6"(s) |
>6"(L) |
Max. |
Min. |
Min. |
Max. |
Min. |
Max. |
Min. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
||
|
1/2" |
0.500 |
13 |
Inch |
0.493 |
0.500 |
0.736 |
0.750 |
0.840 |
0.866 |
0.302 |
0.323 |
1.250 |
1.500 |
0.550 |
0.675 |
0.488 |
0.499 |
0.444 |
0.449 |
0.404 |
0.015 |
0.025 |
0.015 |
0.025 |
0.000 |
0.157 |
|
|
mm |
12.52 |
12.70 |
18.69 |
19.05 |
21.34 |
22.00 |
7.67 |
8.20 |
31.75 |
38.10 |
13.97 |
17.15 |
12.39 |
12.66 |
11.26 |
11.39 |
10.26 |
0.38 |
0.64 |
0.38 |
0.64 |
0.00 |
4.00 |
||||
|
9/16" |
0.563 |
12 |
Inch |
0.555 |
0.563 |
0.798 |
0.812 |
0.910 |
0.938 |
0.348 |
0.371 |
1.375 |
1.625 |
0.652 |
0.731 |
0.550 |
0.561 |
0.502 |
0.507 |
0.459 |
0.020 |
0.045 |
0.015 |
0.025 |
0.000 |
0.197 |
|
|
mm |
14.08 |
14.29 |
20.27 |
20.62 |
23.11 |
23.83 |
8.84 |
9.42 |
34.93 |
41.28 |
16.56 |
18.56 |
13.96 |
14.25 |
12.74 |
12.87 |
11.65 |
0.51 |
1.14 |
0.38 |
0.64 |
0.00 |
5.00 |
||||
|
5/8" |
0.625 |
11 |
Inch |
0.617 |
0.625 |
0.922 |
0.938 |
1.051 |
1.083 |
0.378 |
0.403 |
1.500 |
1.750 |
0.715 |
0.844 |
0.611 |
0.623 |
0.559 |
0.564 |
0.512 |
0.020 |
0.045 |
0.015 |
0.025 |
0.000 |
0.197 |
|
|
mm |
15.67 |
15.88 |
23.42 |
23.83 |
26.70 |
27.51 |
9.60 |
10.24 |
38.10 |
44.45 |
18.16 |
21.44 |
15.53 |
15.83 |
14.20 |
14.34 |
13.00 |
0.51 |
1.14 |
0.38 |
0.64 |
0.00 |
5.00 |
||||
|
3/4" |
0.750 |
10 |
Inch |
0.741 |
0.750 |
1.100 |
1.125 |
1.254 |
1.299 |
0.455 |
0.483 |
1.750 |
2.000 |
0.840 |
1.012 |
0.735 |
0.748 |
0.677 |
0.683 |
0.626 |
0.020 |
0.045 |
0.015 |
0.025 |
0.000 |
0.197 |
|
|
mm |
18.82 |
19.05 |
27.94 |
28.58 |
31.85 |
32.99 |
11.56 |
12.27 |
44.45 |
50.80 |
21.34 |
25.71 |
18.68 |
19.00 |
17.20 |
17.35 |
15.89 |
0.51 |
1.14 |
0.38 |
0.64 |
0.00 |
5.00 |
||||
|
7/8" |
0.875 |
9 |
Inch |
0.866 |
0.875 |
1.285 |
1.312 |
1.465 |
1.516 |
0.531 |
0.563 |
2.000 |
2.250 |
1.005 |
1.181 |
0.859 |
0.873 |
0.795 |
0.801 |
0.737 |
0.040 |
0.065 |
0.015 |
0.035 |
0.000 |
0.197 |
|
|
mm |
22.00 |
22.23 |
32.64 |
33.32 |
37.21 |
38.51 |
13.49 |
14.30 |
50.80 |
57.15 |
25.53 |
29.99 |
21.82 |
22.18 |
20.18 |
20.34 |
18.71 |
1.02 |
1.65 |
0.38 |
0.89 |
0.00 |
5.00 |
||||
|
1" |
1.000 |
8 |
Inch |
0.990 |
1.000 |
1.469 |
1.500 |
1.675 |
1.732 |
0.591 |
0.627 |
2.250 |
2.500 |
1.190 |
1.350 |
0.983 |
0.998 |
0.910 |
0.917 |
0.845 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.236 |
|
|
mm |
25.15 |
25.40 |
37.31 |
38.10 |
42.55 |
43.99 |
15.01 |
15.93 |
57.15 |
63.50 |
30.23 |
34.29 |
24.97 |
25.35 |
23.11 |
23.29 |
21.45 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
6.00 |
||||
|
1-1/8" |
1.125 |
8 |
Inch |
1.114 |
1.125 |
1.631 |
1.688 |
1.859 |
1.949 |
0.658 |
0.718 |
2.500 |
2.750 |
1.315 |
1.519 |
1.079 |
1.123 |
1.035 |
1.042 |
0.970 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.236 |
|
|
mm |
28.30 |
28.58 |
41.43 |
42.88 |
47.22 |
49.50 |
16.71 |
18.24 |
63.50 |
69.85 |
33.40 |
38.59 |
27.41 |
28.52 |
26.28 |
26.46 |
24.63 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
6.00 |
||||
|
1-1/4" |
1.250 |
8 |
Inch |
1.239 |
1.250 |
1.812 |
1.875 |
2.066 |
2.165 |
0.749 |
0.813 |
2.750 |
3.000 |
1.440 |
1.687 |
1.233 |
1.248 |
1.160 |
1.167 |
1.095 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.276 |
|
|
mm |
31.47 |
31.75 |
46.02 |
47.63 |
52.48 |
54.99 |
19.02 |
20.65 |
69.85 |
76.20 |
36.58 |
42.86 |
31.32 |
31.70 |
29.46 |
29.63 |
27.80 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
7.00 |
||||
|
1-3/8" |
1.375 |
8 |
Inch |
1.363 |
1.375 |
1.994 |
2.062 |
2.273 |
2.382 |
0.810 |
0.878 |
3.000 |
3.250 |
1.565 |
1.856 |
1.358 |
1.373 |
1.284 |
1.292 |
1.219 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.276 |
|
|
mm |
34.62 |
34.93 |
50.65 |
52.37 |
57.73 |
60.50 |
20.57 |
22.30 |
76.20 |
82.55 |
39.75 |
47.13 |
34.49 |
34.87 |
32.62 |
32.81 |
30.97 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
7.00 |
||||
|
1-1/2" |
1.500 |
8 |
Inch |
1.488 |
1.500 |
2.175 |
2.250 |
2.480 |
2.598 |
0.902 |
0.974 |
3.250 |
3.500 |
1.690 |
2.025 |
1.483 |
1.498 |
1.409 |
1.417 |
1.344 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.315 |
|
|
mm |
37.80 |
38.10 |
55.25 |
57.15 |
62.99 |
65.99 |
22.91 |
24.74 |
82.55 |
88.90 |
42.93 |
51.44 |
37.66 |
38.04 |
35.80 |
35.98 |
34.15 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
8.00 |
||||
|
1-5/8" |
1.625 |
8 |
Inch |
1.613 |
1.625 |
2.356 |
2.438 |
2.686 |
2.815 |
0.962 |
1.038 |
3.500 |
3.750 |
1.795 |
2.194 |
1.608 |
1.623 |
1.534 |
1.542 |
1.469 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.354 |
|
|
mm |
40.97 |
41.28 |
59.84 |
61.93 |
68.22 |
71.50 |
24.43 |
26.37 |
88.90 |
95.25 |
45.60 |
55.73 |
40.84 |
41.22 |
38.97 |
39.16 |
37.32 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
9.00 |
||||
|
1-3/4" |
1.750 |
8 |
Inch |
1.738 |
1.750 |
2.538 |
2.625 |
2.893 |
3.031 |
1.054 |
1.134 |
3.750 |
4.000 |
1.940 |
2.362 |
1.733 |
1.748 |
1.659 |
1.667 |
1.594 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.354 |
|
|
mm |
44.15 |
44.45 |
64.47 |
66.68 |
73.48 |
76.99 |
26.77 |
28.80 |
95.25 |
101.60 |
49.28 |
60.00 |
44.01 |
44.39 |
42.14 |
42.33 |
40.50 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
9.00 |
||||
|
1-7/8" |
1.875 |
8 |
Inch |
1.863 |
1.875 |
2.719 |
2.812 |
3.099 |
3.248 |
1.114 |
1.198 |
4.000 |
4.250 |
2.071 |
2.531 |
1.858 |
1.873 |
1.784 |
1.792 |
1.719 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.394 |
|
|
mm |
47.32 |
47.63 |
69.06 |
71.42 |
78.71 |
82.50 |
28.30 |
30.43 |
101.60 |
107.95 |
52.60 |
64.28 |
47.19 |
47.57 |
45.31 |
45.50 |
43.67 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
10.00 |
||||
|
2" |
2.000 |
8 |
Inch |
1.988 |
2.000 |
2.900 |
3.000 |
3.306 |
3.464 |
1.175 |
1.263 |
4.250 |
4.500 |
2.190 |
2.688 |
1.983 |
1.998 |
1.909 |
1.917 |
1.844 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.394 |
|
|
mm |
50.50 |
50.80 |
73.66 |
76.20 |
83.97 |
87.99 |
29.85 |
32.08 |
107.95 |
114.30 |
55.63 |
68.28 |
50.36 |
50.74 |
48.48 |
48.68 |
46.85 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
10.00 |
||||
|
2-1/4" |
2.250 |
8 |
Inch |
2.238 |
2.250 |
3.262 |
3.375 |
3.719 |
3.897 |
1.327 |
1.423 |
- |
5.000 |
2.440 |
3.037 |
2.233 |
2.248 |
2.158 |
2.166 |
2.094 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.433 |
|
|
mm |
56.85 |
57.15 |
82.85 |
85.73 |
94.46 |
98.98 |
33.71 |
36.14 |
- |
127.00 |
61.98 |
77.15 |
56.71 |
57.09 |
54.82 |
55.03 |
53.19 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
11.00 |
||||
|
2-1/2" |
2.500 |
8 |
Inch |
2.488 |
2.500 |
3.625 |
3.750 |
4.133 |
4.330 |
1.479 |
1.583 |
- |
5.500 |
2.690 |
3.375 |
2.483 |
2.498 |
2.408 |
2.416 |
2.344 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.472 |
|
|
mm |
63.20 |
63.50 |
92.08 |
95.25 |
104.98 |
109.98 |
37.57 |
40.21 |
- |
139.70 |
68.33 |
85.73 |
63.06 |
63.44 |
61.17 |
61.37 |
59.54 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
12.00 |
||||
|
2-3/4" |
2.750 |
8 |
Inch |
2.738 |
2.750 |
3.988 |
4.125 |
4.546 |
4.763 |
1.632 |
1.744 |
- |
6.000 |
2.940 |
3.712 |
2.733 |
2.748 |
2.658 |
2.666 |
2.594 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.512 |
|
|
mm |
69.55 |
69.85 |
101.30 |
104.78 |
115.47 |
120.98 |
41.45 |
44.30 |
- |
152.40 |
74.68 |
94.28 |
69.41 |
69.79 |
67.51 |
67.72 |
65.89 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
13.00 |
||||
|
3" |
3.000 |
8 |
Inch |
2.988 |
3.000 |
4.350 |
4.500 |
4.959 |
5.196 |
1.815 |
1.935 |
- |
6.500 |
3.190 |
3.712 |
2.982 |
2.997 |
2.908 |
2.916 |
2.844 |
0.060 |
0.095 |
0.015 |
0.035 |
0.000 |
0.591 |
|
|
mm |
75.90 |
76.20 |
110.49 |
114.30 |
125.96 |
131.98 |
46.10 |
49.15 |
- |
165.10 |
81.03 |
94.29 |
75.75 |
76.13 |
73.86 |
74.07 |
72.24 |
1.52 |
2.41 |
0.38 |
0.89 |
0.00 |
15.00 |
||||