Y Y ER/L-W R Y R External Whitworth (BSW, BSF, BSP) di X X X B.S.84-1956 DIN 259 Medium Class l Full Profile Laydown Threading Inserts l l di di External right-hand shown NUT Dimensions Tough 1  Hard R0.137P 55° THREADING R0.137P SCREW Designation di TPI l R X Y Z (3) IC228 IC50M IC250 IC508 IC808 IC908 IC1007 11ER 36 W 6.35 36.0 11.00 0.07 0.6 0.6 1 • 11ER 20 W 6.35 20.0 11.00 0.14 8.0 0.9 1 • 11ER/L 19 W 6.35 19.0 11.00 0.15 0.8 1.0 1 • 11ER 18 W 6.35 18.0 11.00 0.16 0.8 1.0 1 • 11ER 16 W 6.35 16.0 11.00 0.18 0.9 1.1 1 • 11ER 14 W 6.35 14.0 11.00 0.21 0.9 1.1 1 • • • 16ER 40 W 9.52 40.0 16.00 0.06 0.6 0.6 1 • 16ER 32 W 9.52 32.0 16.00 0.09 0.6 0.6 1 • 16ER/L 28 W 9.52 28.0 16.00 0.09 0.6 0.7 1 • • • • 16ER 26 W 9.52 26.0 16.00 0.10 0.7 0.7 1 • • • 16ER/L 24 W 9.52 24.0 16.00 0.11 0.7 0.8 1 • • • 16ER/L 22 W 9.52 22.0 16.00 0.13 0.8 0.9 1 • • • 16ER 20 W 9.52 20.0 16.00 0.14 0.8 0.9 1 • • • • 16ER/L 19 W 9.52 19.0 16.00 0.15 0.8 1.0 1 • • • • • 16ERB 19 W (1) 9.52 19.0 16.00 0.15 0.8 1.0 1 • 16ERM 19 W (1) 9.52 19.0 16.00 0.16 0.8 1.0 1 • • • • • 16ER/L 18 W 9.52 18.0 16.00 0.16 0.8 1.0 1 • • • 16ER 16 W 9.52 16.0 16.00 0.18 0.9 1.1 1 • • • 16ERB 16 W (1) 9.52 16.0 16.00 0.18 0.9 1.1 1 • 16ERM 16 W (1) 9.52 16.0 16.00 0.20 0.9 1.1 1 • • • • 16ER/L 14 W 9.52 14.0 16.00 0.21 1.0 1.2 1 • • • • • 16ER 14 W 2M (2) 9.52 14.0 16.00 0.21 1.7 2.7 2 • 16ERB 14 W (1) 9.52 14.0 16.00 0.21 1.0 1.2 1 • 16ERM 14 W (1) 9.52 14.0 16.00 0.24 1.0 1.2 1 • • • • • 16ER/L 12 W 9.52 12.0 16.00 0.25 1.1 1.4 1 • • • • 16ER/L 11 W 9.52 11.0 16.00 0.27 1.1 1.5 1 • • • • • • 16ERB 11 W (1) 9.52 11.0 16.00 0.27 1.1 1.5 1 • 16ERM 11 W (1) 9.52 11.0 16.00 0.27 1.1 1.5 1 • • • • • 16ER/L 10 W 9.52 10.0 16.00 0.31 1.1 1.5 1 • • • 16ERB 10 W (1) 9.52 10.0 16.00 0.31 1.1 1.5 1 • 16ER 9 W 9.52 9.0 16.00 0.34 1.2 1.7 1 • • 16ER/L 8 W 9.52 8.0 16.00 0.39 1.2 1.5 1 • • • 22ER 14 W 3M (2) 12.70 14.0 22.00 0.21 2.8 4.5 3 • 22ER 11 W 2M (2) 12.70 11.0 22.00 0.27 2.3 3.4 2 • 22ER 7 W 12.70 7.0 22.00 0.45 1.6 2.3 1 • • 22ER 6 W 12.70 6.0 22.00 0.52 1.6 2.3 1 • • • 22ER 5 W 12.70 5.0 22.00 0.65 1.7 2.4 1 • • 22UEIRL 4.5 W 12.70 4.5 22.00 0.73 2.3 11.0 1 • 22UEIRL 4 W 12.70 4.0 22.00 0.87 1.8 11.0 1 • 27ER 4.5 W 15.88 4.5 27.00 0.73 1.8 2.6 1 • 27ER 4 W 15.88 4.0 27.00 0.73 2.0 2.9 1 • • 27UEIRL 3.5 W 15.88 3.5 27.00 0.95 2.1 13.7 1 • 27UEIRL 3 W 15.88 3.0 27.00 1.12 2.3 13.7 1 • • For Insert Identification System, see page 489 • For threading between walls use GRIP-type insert TIP-BSW • Tolerance: medium class • For technical information and detailed cutting data, see pages 536-546 • For recommended number of passes for multi-tooth inserts see page 544 (1) With pressed chipformer. (2) Multi-tooth (3) Number of teeth per corner. For tools, see pages: C#-SER/L (530) • SER-D (530) • SER/L (529) 507