|
| |
Across Flat Dimensions of Hex Headed Bolts
| Shaft
Diameter |
Maximum |
Minimum |
|
Inches |
mm |
Inches |
mm |
| 10BA |
0.117 |
2.97 |
0.114 |
2.90 |
| SAE NO 2 |
0.125 |
3.18 |
0.120 |
3.05 |
| 9BA |
0.131 |
3.33 |
0.128 |
3.25 |
|
8BA
|
0.152 |
3.86 |
0.149 |
3.79 |
| 7BA |
0.172 |
4.37 |
0.169 |
4.29 |
| SAE NO 3 |
0.187 |
4.75 |
0.181 |
4.59 |
| SAE NO 4 |
0.187 |
4.75 |
0.181 |
4.59 |
| SAE NO 5 |
0.187 |
4.75 |
0.181 |
4.59 |
| 6BA |
0.193 |
4.90 |
0.189 |
4.80 |
| 5BA |
0.220 |
5.59 |
0.216 |
5.49 |
| BS 1/8" |
0.220 |
5.59 |
0.216 |
5.49 |
| 4BA |
0.248 |
6.30 |
0.243 |
6.17 |
| BS 5/32" |
0.245 |
6.30 |
0.243 |
6.17 |
| SAE NO 6 |
0.250 |
6.35 |
0.244 |
6.20 |
| SAE NO 8 |
0.250 |
6.35 |
0.244 |
6.20 |
| 3BA |
0.282 |
7.16 |
0.277 |
7.04 |
| SAE
NO 10 |
0.312 |
7.92 |
0.305 |
7.75 |
| SAE NO 12 |
0.312 |
7.92 |
0.305 |
7.75 |
| 5mm |
0.315 |
8.00 |
0.300 |
7.64 |
| 2BA |
0.324 |
8.23 |
0.319 |
8.10 |
| BS 3/16" |
0.324 |
8.23 |
0.319 |
8.10 |
| 1BA |
0.365 |
9.27 |
0.360 |
9.14 |
| 6mm |
0.394 |
10.00 |
0.379 |
9.64 |
| 0BA |
0.413 |
10.49 |
0.408 |
10.36 |
| SAE 1/4" |
0.438 |
11.13 |
0.425 |
10.80 |
| BS 1/4" |
0.445 |
11.30 |
0.435 |
11.05 |
| SAE
5/16" |
0.500 |
12.70 |
0.484 |
12.29 |
| 8mm |
0.512 |
13.00 |
0.495 |
12.57 |
| BS 5/16" |
0.525 |
13.34 |
0.515 |
13.08 |
| SAE 3/8" |
0.563 |
14.30 |
0.544 |
13.82 |
| BS 3/8" |
0.600 |
15.24 |
0.585 |
14.86 |
| SAE
7/16" |
0.625 |
15.87 |
0.603 |
15.32 |
| 10mm |
0.669 |
17.00 |
0.652 |
16.57 |
| BS 7/16" |
0.710 |
18.03 |
0.695 |
17.65 |
| 12mm |
0.748 |
19.00 |
0.727 |
18.48 |
| SAE 1/2" |
0.750 |
19.05 |
0.725 |
18.42 |
| SAE
9/16" |
0.812 |
20.62 |
0.798 |
20.27 |
| BS 1/2" |
0.820 |
20.82 |
0.800 |
20.32 |
| BS 9/16" |
0.920 |
23.37 |
0.900 |
22.86 |
| SAE 5/8" |
0.938 |
23.81 |
0.906 |
23.01 |
| 16mm |
0.945 |
24.00 |
0.912 |
23.16 |
| BS 5/8" |
1.010 |
25.65 |
0.985 |
25.02 |
| SAE 3/4" |
1.125 |
28.58 |
1.088 |
27.64 |
| 20mm |
1.181 |
30.00 |
1.148 |
29.16 |
| BS 3/4" |
1.200 |
30.48 |
1.175 |
29.85 |
| BS 7/8" |
1.300 |
33.02 |
1.270 |
32.26 |
| SAE 7/8" |
1.313 |
33.34 |
1.269 |
32.23 |
| 24mm |
1.417 |
36.00 |
1.378 |
35.00 |
| BS 1" |
1.480 |
37.59 |
1.450 |
36.83 |
| SAE 1" |
1.500 |
38.10 |
1.450 |
36.83 |
|
