Grade TT7010 TT9030 API - OIL THREADS EXTERNAL & INTERNAL - API ROUND TYPE (API SPEC 5B8-1996) Regular Type Application: Oil & Gas Indusrty *Right hand (external) shown Designation ThreadType Hand InsertType IC TPI L Taper(inch)(inch)IPF 16ER8APIRD External Right Regular 0.375 8 0.630 0.750 16ER10APIRD External Right Regular 0.375 10 0.630 0.750 16IR8APIRD Internal Right Regular 0.375 8 0.630 0.750 16IR10APIRD Internal Right Regular 0.375 10 0.630 0.750 =P =M =K =N =S =H 1237