 Series: WHITWORTH, External, RH/LH Regular-Type
Series: WHITWORTH, External, RH/LH Regular-Type 
| Designation | IC Inscribed Circle Dia. | TPI Threads Per Inch | RE Corner Radius | INSL Insert Length | PDX Profile Distance Ex | PDY Profile Distance Ey | TCTR Thread Tolerance Class | IH Insert Hand | |
|---|---|---|---|---|---|---|---|---|---|
| 16EL11W | 0.375 | 11 | 0.011 | 0.649 | 0.059 | 0.043 | Medium | Left | |
| 16EL14W | 0.375 | 14 | 0.009 | 0.649 | 0.047 | 0.039 | Medium | Left | |
| 16EL19W | 0.375 | 19 | 0.007 | 0.649 | 0.031 | 0.028 | Medium | Left | |
| 16ER10W | 0.375 | 10 | 0.013 | 0.649 | 0.059 | 0.043 | NA | Right | |
| 16ER11W | 0.375 | 11 | 0.011 | 0.649 | 0.059 | 0.043 | NA | Right | |
| 16ER12W | 0.375 | 12 | 0.011 | 0.649 | 0.055 | 0.047 | NA | Right | |
| 16ER14W | 0.375 | 14 | 0.009 | 0.649 | 0.047 | 0.039 | NA | Right | |
| 16ER16W | 0.375 | 16 | 0.008 | 0.649 | 0.047 | 0.035 | NA | Right | |
| 16ER18W | 0.375 | 18 | 0.007 | 0.649 | 0.047 | 0.043 | NA | Right | |
| 16ER19W | 0.375 | 19 | 0.007 | 0.649 | 0.031 | 0.028 | NA | Right | |
| 16ER20W | 0.375 | 20 | 0.006 | 0.649 | 0.031 | 0.028 | NA | Right | |
| 16ER24W | 0.375 | 24 | 0.006 | 0.649 | 0.031 | 0.028 | NA | Right | |
| 16ER26W | 0.375 | 26 | 0.005 | 0.649 | 0.028 | 0.028 | NA | Right | |
| 16ER28W | 0.375 | 28 | 0.004 | 0.649 | 0.028 | 0.024 | NA | Right | |
| 16ER8W | 0.375 | 8 | 0.016 | 0.649 | 0.063 | 0.047 | NA | Right | |
| 22ER6W | 0.500 | 6 | 0.020 | 0.866 | 0.091 | 0.063 | NA | Right |