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  | 
        |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |