 Series: Partial Profile 55°, External, RH/LH Regular Type
Series: Partial Profile 55°, External, RH/LH Regular Type 
| Designation | IC Inscribed Circle Dia. | TPIN Threads Per Inch Min. | TPIX Threads Per Inch Max. | TPN Thread Pitch Min. | TPX Thread Pitch Max. | RE Corner Radius | INSL Insert Length | PDX Profile Distance Ex | PDY Profile Distance Ey | IH Insert Hand | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 16ERA55 | 0.375 | 16 | 48 | 0.50 mm | 1.50 mm | 0.002 | 0.649 | 0.035 | 0.031 | Right | 
| Designation | IC Inscribed Circle Dia. | TPIN Threads Per Inch Min. | TPIX Threads Per Inch Max. | TPN Thread Pitch Min. | TPX Thread Pitch Max. | RE Corner Radius | INSL Insert Length | PDX Profile Distance Ex | PDY Profile Distance Ey | IH Insert Hand | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 16ELAG55 | 0.375 | 8 | 48 | 0.50 mm | 3.0 mm | 0.003 | 0.649 | 0.067 | 0.047 | Left | |
| 16ERA55 | 0.375 | 16 | 48 | 0.50 mm | 1.50 mm | 0.002 | 0.649 | 0.035 | 0.031 | Right | |
| 16ERAG55 | 0.375 | 8 | 48 | 0.50 mm | 3.0 mm | 0.003 | 0.649 | 0.067 | 0.047 | Right | |
| 22ERN55 | 0.500 | 5 | 7 | 3.5 mm | 5.0 mm | 0.019 | 0.866 | 0.098 | 0.067 | Right | |
| 27ERQ55 | 0.625 | 4 | 4.5 | 5.5 mm | 6.0 mm | 0.024 | 1.083 | 0.114 | 0.079 | Right |