Threading Inserts WHITWORTH BSW, BSF, BSP EXTERNAL B.S.84: 1956 ISO 228-1: 1994 A L A B W NUT R 0.137P 55° I.C. L R 0.137P B T I.C. W SCREW VERTICAL MULTITOOTH MULTITOOTH PITCH DIMENSIONS CATALOG NUMBER TEETH ANVIL RIGHT HAND L TPI mm I.C. A B 14 2 W14 2M ER16 ES16M 16 9.525 1.8 2.8 14 3 W14 3M ER22 2.8 4.6 ES22M 11 2 W11 2M ER22 22 12.70 2.4 3.5 VERTICAL INSERTS PITCH CATALOG NUMBER DIMENSIONS RIGHT HAND L I.C. A B T TPI mm 19 W19 ER16V 1.1 0.8 3.7 14 W14 ER16V 1.1 1.1 3.7 16 9.525 11 W11 ER16V 1.1 1.3 3.7 21