|
|
|
Nominal |
F, |
G, |
H, |
T, |
S, |
Runout of |
|
size or |
width across |
width across |
thickness |
unslotted |
width of |
bearing |
|
basic major |
flats |
corners |
|
|
|
thickness |
slot |
surface, |
|
diameter of |
|
|
|
|
|
|
|
|
|
|
|
|
FIR |
|
thread |
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
Max |
Min |
Max |
Min |
max |
|
1/4
|
0.2500 |
7/16 |
0.438 |
0.428 |
0.505 |
0.488 |
9/32 |
0.288 |
0.274 |
0.20 |
0.18 |
0.10 |
0.07 |
0.015 |
|
5/16 |
0.3125 |
1/2
|
0.500 |
0.489 |
0.577 |
0.557 |
21/64 |
0.336 |
0.320 |
0.24 |
0.22 |
0.12 |
0.09 |
0.016 |
|
3/8
|
0.3750 |
9/16 |
0.562 |
0.551 |
0.650 |
0.628 |
13/32 |
0.415 |
0.398 |
0.29 |
0.27 |
0.15 |
0.12 |
0.017 |
|
7/16 |
0.4375 |
11/16 |
0.688 |
0.675 |
0.794 |
0.768 |
29/64 |
0.463 |
0.444 |
0.31 |
0.29 |
0.15 |
0.12 |
0.018 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1/2
|
0.5000 |
3/4
|
0.750 |
0.736 |
0.866 |
0.840 |
9/16 |
0.573 |
0.552 |
0.42 |
0.40 |
0.18 |
0.15 |
0.019 |
|
9/16 |
0.5625 |
7/8
|
0.875 |
0.861 |
1.010 |
0.982 |
39/64 |
0.621 |
0.598 |
0.43 |
0.41 |
0.18 |
0.15 |
0.020 |
|
5/8
|
0.6250 |
15/16 |
0.938 |
0.922 |
1.083 |
1.051 |
23/32 |
0.731 |
0.706 |
0.51 |
0.49 |
0.24 |
0.18 |
0.021 |
|
3/4
|
0.7500 |
1 1/8
|
1.125 |
1.088 |
1.299 |
1.240 |
13/16 |
0.827 |
0.798 |
0.57 |
0.55 |
0.24 |
0.18 |
0.023 |
|
7/8
|
0.8750 |
1 5/16 |
1.312 |
1.269 |
1.516 |
1.447 |
29/32 |
0.922 |
0.890 |
0.67 |
0.64 |
0.24 |
0.18 |
0.025 |
|
Source: Standard Handbook of
Fastening and Joining and Fastening , Robert Parmley (Editor in
Chief), McGraw Hill, 1977 |
|
