Threading Inserts WHITWORTH BSW, BSF, BSP EXTERNAL B.S.84: 1956ISO 228-1: 1994 BA W NUT R 0.137P 55° L R 0.137P W SCREW I.C. PITCH CATALOG NUMBER DIMENSIONS TPI RIGHT HAND LEFT HAND L mm I.C. A B 72 W72 ER11 W72 EL11 0.6 0.4 60 W60 ER11 W60 EL11 0.6 0.4 56 W56 ER11 W56 EL11 0.6 0.4 48 W48 ER11 W48 EL11 0.6 0.6 40 W 40 ER11 W 40 EL11 0.6 0.6 36 W36 ER11 W36 EL11 0.6 0.6 32 W 32 ER11 W 32 EL11 0.6 0.6 28 W 28 ER11 W 28 EL11 0.6 0.7 26 W 26 ER11 W 26 EL11 0.7 0.8 24 W 24 ER11 W 24 EL11 11 6.35 0.7 0.8 22 W 22 ER11 W 22 EL11 0.8 0.9 20 W 20 ER11 W 20 EL11 0.8 0.9 19 W 19 ER11 W 19 EL11 0.8 1.0 18 W 18 ER11 W 18 EL11 0.8 1.0 16 W 16 ER11 W 16 EL11 0.9 1.1 14 W 14 ER11 W 14 EL11 0.9 1.0 72 W72 ER16 W72 EL16 0.7 0.4 60 W60 ER16 W60 EL16 0.7 0.4 56 W56 ER16 W56 EL16 0.7 0.4 48 W48 ER16 W48 EL16 16 9.525 0.6 0.6 40 W 40 ER16 W 40 EL16 0.6 0.6 36 W 36 ER16 W 36 EL16 0.6 0.6 continued on next page 19