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48 Diametral Pitch Ratings
20° Pressure Angle
1/8" Face
| Number of Teeth | Pitch Diameter | Outside Diameter | Stock Bore | Hub Diameter | Hub Projection | Style | Catalog Number | |
| Brass | Steel | |||||||
| 12 | .250 | .2917 | 1/8 | 3/16 | 3/16 | Plain | TBT4812 | TST4812 |
| 15 | .3125 | .3542 | 1/8 | 7/32 | 3/16 | Plain | TBT4815 | TST4815 |
| 18 | .375 | .4166 | 1/8 | 9/32 | 3/16 | Plain | TBT4818 | TST4818 |
| 21 | .4375 | .4792 | 1/8 | 11/32 | 3/16 | Plain | TBT4821 | TST4821 |
| 24 | .500 | .5417 | 3/16 | 3/8 | 1/4 | Plain | TBT4824 | TST4824 |
| 27 | .5625 | .6042 | 3/16 | 7/16 | 1/4 | Plain | TBT4827 | TST4827 |
| 30 | .625 | .6667 | 3/16 | 7/16 | 1/4 | Plain | TBT4830 | TST4830 |
| 36 | .750 | .7917 | 3/16 | 1/2 | 1/4 | Plain | TBT4836 | TST4836 |
| 42 | .875 | .9167 | 3/16 | 9/16 | 1/4 | Plain | TBT4842 | - - - - - |
| 48 | 1.0000 | 1.0417 | 1/4 | 5/8 | 1/4 | Plain | TBT4848 | - - - - - |
| 54 | 1.125 | 1.1667 | 1/4 | 11/16 | 1/4 | Plain | TBT4854 | - - - - - |
| 60 | 1.250 | 1.2917 | 1/4 | 11/16 | 1/4 | Plain | TBT4860 | - - - - - |
| 66 | 1.375 | 1.4166 | 1/4 | 3/4 | 1/4 | Plain | TBT4866 | - - - - - |
| 72 | 1.500 | 1.5417 | 1/4 | 3/4 | 1/4 | Plain | TBT4872 | - - - - - |
| 84 | 1.750 | 1.7917 | 1/4 | 13/16 | 1/4 | Plain | TBT4884 | - - - - - |
| 96 | 2.000 | 2.0417 | 1/4 | 7/8 | 1/4 | Plain | TBT4896 | - - - - - |
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