| Series | Shaft Size | Part Number | A | B | C | D | Hole Dia. |
| 204 | 1/2 5/8 3/4 | FBUH216 FBUH220 FBUH224 | 4.41 | 3.53 | 2.38 | 1.0 | 0.406 |
| 205 | 7/8 15/16 1 | FBUH228 FBUH230 FBUH232 | 4.88 | 3.88 | 2.75 | 1.0 | 0.469 |
| 206 | 1-1/16 1-1/8 1-3/16 1-1/4S | FBUH234 FBUH236 FBUH238 FBUH240S | 5.56 | 4.59 | 3.13 | 1.0 | 0.469 |
| 207 | 1-1/4 1-5/16 1-3/8 1-7/16 | FBUH240 FBUH242 FBUH244 FBUH246 | 6.13 | 5.13 | 3.75 | 1.25 | 0.531 |
| 208 | 1-1/2 1-5/8 | FBUH248 FBUH252 | 6.75 | 5.66 | 4.13 | 1.50 | 0.531 |
| 209 | 1-5/8L 1-11/16 1-3/4 | FBUH252L FBUH254 FBUH256 | 7.06 | 5.84 | 4.38 | 1.50 | 0.531 |
| 210 | 1-15/16 2 | FBUH262 FBUH264 | 7.44 | 6.19 | 4.56 | 2.00 | 0.531 |