Description
4-40-721 Splined Stub Tube Shaft 1550 Series fits Tube Diameter 3.500″ x .095″

| Splines | |
| Spline | 1.750×16 |
| Tube | 3.500 x .095 |
| (K) | 9.219 |
| (L) | 3.000 |
| (R) | 8.250 |
| (B) | 3.321 |
- Spline Stub 1.750×16 spline, 3.500 X .095 Tube
- The following parts may be used as alternates for this part: Rockwell/Meritor 155N-40-721


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