Grade API - OIL THREADS EXTERNAL & INTERNAL - API EXTREME LINE CASTING (ANSI B1.9-1973 CLASS 2) Regular Type Application: Oil & Gas Indusrty *Right hand (external) shown Designation ThreadType Hand InsertType IC TPI L Taper(inch)(inch)IPF ConnectionNumber 22ER5EL1.25 External Right Regular 0.500 5 0.866 1.250 8-5/8"/10-3/4" 22ER6EL1.5 External Right Regular 0.500 5 0.866 1.500 5" 7-5/8" 22IR5EL1.25 Internal Right Regular 0.500 5 0.866 1.250 8-5/8"/10-3/4" 22IR6EL1.5 Internal Right Regular 0.500 5 0.866 1.500 5" 7-5/8" =P =M =K =N =S =H 1240