AEROSPACE STANDARD 568 DASH NUMBERS
(-001 thru -050) (-102 thru -150) (-151 thru -219) (-220 thru -269)
(-270 thru -341) (-342 thru -391) (-392 thru -475)
| (A) = Size Reference (B) = Volume Cubic Inches (C) = Volume Cubic Centimeters |
| |
Nominal Size Inches |
Actual Size Inches |
Actual Size Millimeters |
| (A) |
I.D. |
O.D. |
W |
I.D. |
W |
(B) |
I.D. |
W |
(C) |
| -392 |
23 |
23-3/8 |
3/8 |
22.940 + .105 |
.210 + .005 |
2.5190 |
582.65 + 2.65 |
5.34 + 0.12 |
41.279 |
| -393 |
24 |
24-3/8 |
3/8 |
23.940 + .110 |
.210 + .005 |
2.6278 |
608.10 + 2.80 |
5.34 + 0.12 |
43.062 |
| -394 |
25 |
25-3/8 |
3/8 |
24.940 + .115 |
.210 + .005 |
2.7366 |
633.50 + 2.90 |
5.34 + 0.12 |
44.845 |
| -395 |
26 |
26-3/8 |
3/8 |
25.940 + .120 |
.210 + .005 |
2.8454 |
658.85 + 3.05 |
5.34 + 0.12 |
46.628 |
| -396 through -424 O-ring sizes not assigned |
| -425 |
4-1/2 |
5 |
1/4 |
4.475 + .033 |
.275 + .006 |
.8863 |
113.67 + 0.83 |
6.98 + 0.15 |
14.524 |
| -426 |
4-5/8 |
5-1/8 |
1/4 |
4.600 + .033 |
.275 + .006 |
.9097 |
116.84 + 0.83 |
6.98 + 0.15 |
14.907 |
| -427 |
4-3/4 |
5-1/4 |
1/4 |
4.725 + .033 |
.275 + .006 |
.9330 |
120.02 + 0.83 |
6.98 + 0.15 |
15.289 |
| -428 |
4-7/8 |
5-3/8 |
1/4 |
4.850 + .033 |
.275 + .006 |
.9663 |
123.19 + 0.83 |
6.98 + 0.15 |
15.671 |
| -429 |
5 |
5-1/2 |
1/4 |
4.975 + .037 |
.275 + .006 |
.9796 |
126.37 + 0.93 |
6.98 + 0.15 |
16.053 |
| |
|
|
|
|
|
|
|
|
|
| -430 |
5-1/8 |
5-5/8 |
1/4 |
5.100 + .037 |
.275 + .006 |
1.0030 |
129.54 + 0.93 |
6.98 + 0.15 |
16.436 |
| -431 |
5-1/4 |
5-3/4 |
1/4 |
5.225 + .037 |
.275 + .006 |
1.0263 |
132.72 + 0.93 |
6.98 + 0.15 |
16.818 |
| -432 |
5-3/8 |
5-7/8 |
1/4 |
5.350 + .037 |
.275 + .006 |
1.0496 |
135.89 + 0.93 |
6.98 + 0.15 |
17.200 |
| -433 |
5-1/2 |
6 |
1/4 |
6.475 + .037 |
.275 + .006 |
1.0729 |
139.07 + 0.93 |
6.98 + 0.15 |
17.582 |
| -434 |
5-5/8 |
6-1/8 |
1/4 |
5.600 + .037 |
.275 + .006 |
1.0963 |
142.24 + 0.93 |
6.98 + 0.15 |
17.965 |
| -435 |
5-3/4 |
6-1/4 |
1/4 |
5.725 + .037 |
.275 + .006 |
1.196 |
145.42 + 0.93 |
6.98 + 0.15 |
18.347 |
| |
|
|
|
|
|
|
|
|
|
| -436 |
5-7/8 |
6-3/8 |
1/4 |
5.850 + .037 |
.275 + .006 |
1.1429 |
148.59 + 0.93 |
6.98 + 0.15 |
18.729 |
| -437 |
6 |
6-1/2 |
1/4 |
5.975 + .037 |
.275 + .006 |
1.1662 |
151.77 + 0.93 |
6.98 + 0.15 |
19.111 |
| -438 |
6-1/4 |
6-3/4 |
1/4 |
6.225 + .040 |
.275 + .006 |
1.2129 |
158.12 + 1.01 |
6.98 + 0.15 |
19.876 |
| -439 |
6-1/2 |
7 |
1/4 |
6.475 + .040 |
.275 + .006 |
1.2595 |
164.47 + 1.01 |
6.98 + 0.15 |
20.640 |
| -440 |
6-3/4 |
7-1/4 |
1/4 |
6.725 + .040 |
.275 + .006 |
1.3062 |
170.82 + 1.01 |
6.98 + 0.15 |
21.405 |
| |
|
|
|
|
|
|
|
|
|
| -441 |
7 |
7-1/2 |
1/4 |
6.975 + .040 |
.275 + .006 |
1.3528 |
177.17 + 1.01 |
6.98 + 0.15 |
22.168 |
| -442 |
7-1/4 |
7-3/4 |
1/4 |
7.225 + .045 |
.275 + .006 |
1.3995 |
183.52 + 1.14 |
6.98 + 0.15 |
22.934 |
| -443 |
7-1/2 |
8 |
1/4 |
7.475 + .045 |
.275 + .006 |
1.4461 |
189.87 + 1.14 |
6.98 + 0.15 |
23.697 |
| -444 |
7-3/4 |
8-1/4 |
1/4 |
7.725 + .045 |
.275 + .006 |
1.4928 |
196.22 + 1.14 |
6.98 + 0.15 |
24.463 |
| -445 |
8 |
8-1/2 |
1/4 |
7.975 + .045 |
.275 + .006 |
1.5394 |
202.57 + 1.14 |
6.98 + 0.15 |
25.226 |
| |
|
|
|
|
|
|
|
|
|
| -446 |
8-1/2 |
9 |
1/4 |
8.475 + .055 |
.275 + .006 |
1.6327 |
215.27 + 1.40 |
6.98 + 0.15 |
26.755 |
| -447 |
9 |
9-1/2 |
1/4 |
8.975 + .055 |
.275 + .006 |
1.7260 |
227.97 + 1.40 |
6.98 + 0.15 |
28.284 |
| -448 |
9-1/2 |
10 |
1/4 |
9.475 + .055 |
.275 + .006 |
1.8193 |
240.67 + 1.40 |
6.98 + 0.15 |
29.813 |
| -449 |
10 |
10-1/2 |
1/4 |
9.975 + .055 |
.275 + .006 |
1.9126 |
253.37 + 1.40 |
6.98 + 0.15 |
31.342 |
| -450 |
10-1/2 |
11 |
1/4 |
10.475 + .060 |
.275 + .006 |
2.0059 |
266.07 + 1.52 |
6.98 + 0.15 |
32.871 |
| |
|
|
|
|
|
|
|
|
|
| -451 |
11 |
11-1/2 |
1/4 |
10.975 + .060 |
.275 + .006 |
2.0992 |
278.77 + 1.52 |
6.98 + 0.15 |
34.400 |
| -452 |
11-1/2 |
12 |
1/4 |
11.475 + .060 |
.275 + .006 |
2.1925 |
291.47 + 1.52 |
6.98 + 0.15 |
35.929 |
| -453 |
12 |
12-1/2 |
1/4 |
11.975 + .060 |
.275 + .006 |
2.2858 |
304.17 + 1.52 |
6.98 + 0.15 |
37.458 |
| -454 |
12-1/2 |
13 |
1/4 |
12.475 + .060 |
.275 + .006 |
2.3791 |
316.87 + 1.52 |
6.98 + 0.15 |
38.987 |
| -455 |
13 |
13-1/2 |
1/4 |
12.975 + .060 |
.275 + .006 |
2.4724 |
329.57 + 1.52 |
6.98 + 0.15 |
40.515 |
| |
|
|
|
|
|
|
|
|
|
| -456 |
13-1/2 |
14 |
1/4 |
13.475 + .070 |
.275 + .006 |
2.5657 |
342.27 + 1.78 |
6.98 + 0.15 |
42.044 |
| -457 |
14 |
14-1/2 |
1/4 |
13.975 + .070 |
.275 + .006 |
2.6590 |
354.97 + 1.78 |
6.98 + 0.15 |
43.573 |
| -458 |
14-1/2 |
15 |
1/4 |
14.475 + .070 |
.275 + .006 |
2.7523 |
367.67 + 1.78 |
6.98 + 0.15 |
45.102 |
| -459 |
15 |
15-1/2 |
1/4 |
14.975 + .070 |
.275 + .006 |
2.8456 |
380.37 + 1.78 |
6.98 + 0.15 |
46.631 |
| -460 |
15-1/2 |
16 |
1/4 |
15.475 + .070 |
.275 + .006 |
2.9389 |
393.07 + 1.78 |
6.98 + 0.15 |
48.160 |
| |
|
|
|
|
|
|
|
|
|
| -461 |
16 |
16-1/2 |
1/4 |
15.955 + .075 |
.275 + .006 |
3.0285 |
405.26 + 1.90 |
6.98 + 0.15 |
49.628 |
| -462 |
16-1/2 |
17 |
1/4 |
16.455 + .075 |
.275 + .006 |
3.1218 |
417.96 + 1.90 |
6.98 + 0.15 |
51.157 |
| -463 |
17 |
17-1/2 |
1/4 |
16.955 + .080 |
.275 + .006 |
3.2151 |
430.66 + 2.05 |
6.98 + 0.15 |
52.686 |
| -464 |
17-1/2 |
18 |
1/4 |
17.455 + .085 |
.275 + .006 |
3.3084 |
443.36 + 2.15 |
6.98 + 0.15 |
54.215 |
| -465 |
18 |
18-1/2 |
1/4 |
17.955 + .085 |
.275 + .006 |
3.4017 |
456.06 + 2.15 |
6.98 + 0.15 |
55.744 |
| |
|
|
|
|
|
|
|
|
|
| -466 |
18-1/2 |
19 |
1/4 |
18.455 + .085 |
.275 + .006 |
3.4950 |
468.76 + 2.15 |
6.98 + 0.15 |
57.273 |
| -467 |
19 |
19-1/2 |
1/4 |
18.955 + .090 |
.275 + .006 |
3.5883 |
481.46 + 2.25 |
6.98 + 0.15 |
58.802 |
| -468 |
19-1/2 |
20 |
1/4 |
19.455 + .090 |
.275 + .006 |
3.6816 |
494.16 + 2.25 |
6.98 + 0.15 |
60.331 |
| -469 |
20 |
20-1/2 |
1/4 |
19.955 + .090 |
.275 + .006 |
3.7749 |
506.86 + 2.45 |
6.98 + 0.15 |
61.860 |
| -470 |
21 |
21-1/2 |
1/4 |
20.955 + .090 |
.275 + .006 |
3.9615 |
532.26 + 2.45 |
6.98 + 0.15 |
64.917 |
| |
|
|
|
|
|
|
|
|
|
| -471 |
22 |
22-1/2 |
1/4 |
21.955 + .100 |
.275 + .006 |
4.1481 |
557.66 + 2.55 |
6.98 + 0.15 |
67.975 |
| -472 |
23 |
23-1/2 |
1/4 |
22.940 + .105 |
.275 + .006 |
4.3319 |
582.65 + 2.65 |
6.98 + 0.15 |
70.987 |
| -473 |
24 |
24-1/2 |
1/4 |
23.940 + .110 |
.275 + .006 |
4.5184 |
608.10 + 2.80 |
6.98 + 0.15 |
74.043 |
| -474 |
25 |
25-1/2 |
1/4 |
24.940 + .115 |
.275 + .006 |
4.7050 |
633.50 + 2.90 |
6.98 + 0.15 |
77.101 |
| -475 |
26 |
26-1/2 |
1/4 |
25.940 + .120 |
.275 + .006 |
4.8916 |
658.85 + 3.05 |
6.98 + 0.15 |
80.159 |
