 Series: WHITWORTH, Internal, RH/LH Regular-Type
Series: WHITWORTH, Internal, 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 | IH Insert Hand | |
|---|---|---|---|---|---|---|---|---|
| 08IR19W | 0.188 | 19 | 0.009 | 0.324 | 0.028 | 0.024 | Right | |
| 11IR14W | 0.250 | 14 | 0.009 | 0.433 | 0.043 | 0.035 | Right | |
| 11IR18W | 0.250 | 18 | 0.007 | 0.433 | 0.039 | 0.031 | Right | |
| 11IR19W | 0.250 | 19 | 0.007 | 0.433 | 0.035 | 0.031 | Right | |
| 16IL11W | 0.375 | 11 | 0.011 | 0.649 | 0.059 | 0.043 | Left | |
| 16IR10W | 0.375 | 10 | 0.013 | 0.649 | 0.043 | 0.043 | Right | |
| 16IR11W | 0.375 | 11 | 0.011 | 0.649 | 0.059 | 0.043 | Right | |
| 16IR12W | 0.375 | 12 | 0.011 | 0.649 | 0.059 | 0.047 | Right | |
| 16IR14W | 0.375 | 14 | 0.009 | 0.649 | 0.047 | 0.039 | Right | |
| 16IR18W | 0.375 | 18 | 0.007 | 0.649 | 0.031 | 0.031 | Right | |
| 16IR20W | 0.375 | 20 | 0.006 | 0.649 | 0.031 | 0.028 | Right | |
| 16IR24W | 0.375 | 24 | 0.004 | 0.649 | 0.031 | 0.028 | Right | |
| 16IR26W | 0.375 | 26 | 0.005 | 0.649 | 0.031 | 0.031 | Right | |
| 16IR8W | 0.375 | 8 | 0.016 | 0.649 | 0.043 | 0.043 | Right |