Straight (cylindrical) keyed shafts without thread
| Standard Code | (D) Shaft Diameter | (SL) Shaft Length | (TL) Total Length | Key Width |
| SAE AA | 0.500″ | 0.750″ | 1.062″ | 0.125″ |
| SAE A | 0.625″ | 0.937″ | 1.250″ | 0.156″ |
| SAE AH | 0.750″ | 0.937″ | 1.250″ | 0.187″ |
| SAE B | 0.875″ | 1.312″ | 1.625″ | 0.250″ |
| SAE BB | 1.000″ | 1.500″ | 1.812″ | 0.250″ |
| SAE C | 1.250″ | 1.875″ | 2.187″ | 0.312″ |
| SAE CC | 1.500″ | 2.125″ | 2.437″ | 0.375″ |
| SAE D | 1.750″ | 2.625″ | 2.937″ | 0.437″ |
| SAE E | 1.750″ | 2.625″ | 2.937″ | 0.437″ |
30° involute splined shafts
| Standard Code | Spline Detail | (D) Shaft Diameter | (SL) Shaft Length | (TL) Total Length |
| SAE AA | 9T 20/40 DP | 0.500″ | 0.750″ | 1.062″ |
| SAE A | 9T 16/32 DP | 0.625″ | 0.937″ | 1.250″ |
| SAE AH | 11T 16/32 DP | 0.750″ | 0.937″ | 1.250″ |
| SAE B | 13T 16/32 DP | 0.875″ | 1.312″ | 1.625″ |
| SAE BB | 15T 16/32 DP | 1.000″ | 1.500″ | 1.812″ |
| SAE C | 14T 12/24 DP | 1.250″ | 1.875″ | 2.187″ |
| SAE CS | 21T 16/32 DP | 1.375″ | 1.875″ | 2.187″ |
| SAE CC | 17T 12/24 DP | 1.500″ | 2.125″ | 2.437″ |
| SAE D, SAE E | 13T 8/16 DP | 1.750″ | 2.625″ | 2.937″ |
| SAE F | 15T 8/16 DP | 2.000″ | 3.150″ | 3.437″ |