| Part Number | W4AK |
| Standard Reference | MS21443-4A |
| System of Measurement | Inch |
| Bore Dia | 0.25″ |
| Bore Dia Tolerance | -0.0005″ to 0″ |
| Outer Dia | 0.75″ |
| Outer Dia Tolerance | -0.0005″ to 0″ |
| Ring Width Outer Height | 0.312″ |
| Ring Width Outer Height Tolerance | -0.005″ to 0″ |
| Ring Width Inner Width | 0.438″ |
| Ring Width Inner Width Tolerance | -0.005″ to 0″ |
| Ball Complement No | 6 |
| Ball Complement Dia | 9/64″ |
| Ring Shoulder Outer | 0.646″ |
| Ring Shoulder Inner | 0.4″ |
| Ring Chamfer Outer | 0.016″ |
| Ring Chamfer Outer Tolerance | 0″ to 0.015″ |
| Ring Chamfer Inner | 0.005″ |
| Ring Chamfer Inner Tolerance | 0″ to 0.015″ |
| Radial Internal Clearance | 0.004″ to 0.0010″ |
| Static Radial Load | 1090 lbs |
| Static Thrust Load | 600 lbs |
| Dynamic Radial Ring Inner Load | 1090 lbs |
| Dynamic Radial Ring Outer Load | 1090 lbs |
| Weight | 0.03 lbs |