HI Mill-Thread Inserts Mill-Thread Inserts HI W 55°WHITWORTH (BSW,BSF,BSP, BSB) BSPT 55°BRITISH STANDARD PIPE Same Inserts forExteranl & InternalTPIA H T Same Inserts forExteranl & InternalTPIA H T 12EI 19 W 19 12 6.3 2.9 12EI 19 BPST 19 12 6.3 2.9 14EI 24 W 24 14 7.5 3.1 14EI 19 BSPT 19 14 7.5 3.1 14EI 20 W 20 14 7.5 3.1 14EI 14 BSPT 14 14 7.5 3.1 12EI 19 W 19 14 7.5 3.1 21El 14 BSPT 14 21 12.0 4.7 12EI 19 W 16 14 7.5 3.1 21El 11 BSPT 11 21 12.0 4.7 12EI 19 W 14 14 7.5 3.1 30EI 11 BSPT 11 30 16.5 5.5 12EI 19 W 20 21 12.0 4.7 A 40EI 11 BSPT 11 40 20.0 6.3 H 12EI 19 W 19 21 12.0 4.7 H v V 12EI 19 W 16 21 12.0 4.7 V A<- -> T < 12EI 19 W 14 21 12.0 4.7 A<- -> T < 12EI 19 W 11 21 12.0 4.7 R0.137P Nut 12EI 19 W 16 30 16.0 5.5 R0.137P Nut 55 ° 12EI 19 W 14 30 16.0 5.5 12EI 19 W 11 30 16.0 5.5 12EI 19 W 11 40 20 6.3 \ R0.137P Screw 12EI 19 W 8 40 20 6.3 R0.137P /1°7' Screw 079 080 NPT / NPTF 60°NATIONAL PIPE Same Inserts forExteranl & InternalTPIA H T 12EI 18 NPT 18 12 6.3 2.9 14EI 18 NPT 18 14 7.5 3.114EI 14NPT14147.53.121El 14NPT142112.04.721El 11.5 NPT11.52112.04.730EI 11.5 NPT11.53016.05.5 V 30EI 8 NPT 8 30 16.0 5.5H40EI 11.5 NPT11.54020.06.340EI 8NPT84020.06.3 METOMET 12EI 18 NPTF 18 12 6.3 2.9 14EI 18 NPTF 18 14 7.5 3.1 14EI 14 NPTF 14 14 7.5 3.1 21El 14 NPTF 14 21 12.0 4.7 21El 11.5 NPTF 11.5 21 12.0 4.7 30EI 11.5 NPTF 11.5 30 16.0 5.5 30EI 8 NPTF 8 30 16.0 5.5 40EI 11.5 NPTF 11.5 40 20.0 6.3 Taper 1:16 Screw 40EI 8 NPTF 8 40 20.0 6.3