
Bolt Thread : UNF
| 8YK**S : | for SAE Standard Pressure Series / bolt thread : UNF |
| 8YK**H : | for SAE High Pressure Series / bolt thread : M |

| Catalog Number | UNF | Y mm |
S mm |
ℓ mm |
D mm |
H mm |
Split Flange |
|---|---|---|---|---|---|---|---|
| 8YA08S | 5/16-18 | 12.7 | 25 | 31.8 | 7.94 | 5.2 | 8YK08, 8YK08H |
| 8YA12S | 3/8-16 | 14.3 | 25 | 31.8 | 9.52 | 6.0 | 8YK12, 8YK16S |
| 8YA20S | 7/16-14 | 15.9 | 28 | 38.1 | 11.1 | 7.1 | 8YK20S |
| 8YA24S | 1/2-13 | 19.0 | 32 | 38.1 | 12.7 | 7.9 | 8YK24, 8YK32S |
| 8YA12H | 3/8-16 | 14.3 | 25 | 38.1 | 9.52 | 6.0 | 8YK12H |
| 8YA16H | 7/16-14 | 15.9 | 25 | 44.5 | 11.1 | 7.1 | 8YK16H |
| 8YA20H | 1/2-13 | 19.0 | 25 | 44.5 | 12.7 | 7.9 | 8YK20H |
| 8YA24H | 5/8-11 | 23.8 | 32 | 57.2 | 15.9 | 9.9 | 8YK24H |
| 8YA32H | 3/4-10 | 28.6 | 32 | 69.8 | 18.9 | 11.9 | 8YK32H |
Bolt Thread : M
| 8YK**SM** : | for SAE High Pressure Series / bolt thread : M |
| 8YK**HM** : | for SAE High Pressure Series / bolt thread : M |

| Catalog Number | M | Y mm |
S mm |
ℓ mm |
D mm |
H mm |
Split Flange |
|---|---|---|---|---|---|---|---|
| 8YA08SM8 | M8×1.25 | 13.0 | 22.0 | 30.0 | 8.0 | 5.5 | 8YK08S, 8YK08H |
| 8YA12SM10 | M10×1.5 | 17.0 | 26.0 | 30.0 | 10.0 | 7.0 | 8YK12SM10, 8YK16SM10 |
| 8YA20SM12 | M12×1.75 | 19.0 | 30.0 | 40.0 | 12.0 | 8.0 | 8YK20SM12, 8YK24SM12, 8YK32SM12 |
| 8YA12HM10 | M10×1.5 | 17.0 | 26.0 | 40.0 | 10.0 | 7.0 | 8YK12HM10 |
| 8YA16HM12 | M12×1.75 | 19.0 | 30.0 | 45.0 | 12.0 | 8.0 | 8YK16HM12, 8YK20HM12 |
| 8YA24HM14 | M14×2.0 | 22.0 | 34.0 | 55.0 | 14.0 | 9.0 | 8YK24HM14 |
| 8YA32HM20 | M20×2.5 | 30.0 | 46.0 | 70.0 | 20.0 | 13.0 | 8YK32HM20 |