
R Y Y R Y U-Type X IR/L-UN (continued) x X di Internal American UN Full Profile l l l (UN, UNC, UNF, UNEF) Laydown Threading Inserts for General Industry di di Internal left-hand shown NUT Dimensions Tough 1 Hard 60° 1/4 P 1/8 P THREADING SCREW Designation di TPI l R X Y Z (3) IC228 IC928 IC50M IC250 IC08 IC508 IC808 IC908 IC1007 16IRB 12 UN (1) 9.53 12.0 16.00 0.12 1.1 1.4 1 • 16IRM 12 UN (1) 9.52 12.0 16.00 0.12 1.1 1.4 1 • • • • 16IR 11.5 UN 9.52 11.5 16.00 0.13 1.1 1.5 1 • 16IR 11 UN 9.52 11.0 16.00 0.14 1.1 1.5 1 • • • 16IR/L 10 UN 9.52 10.0 16.00 0.15 1.1 1.5 1 • • • 16IRB 10 UN (1) 9.52 10.0 16.00 0.15 1.1 1.5 1 • 16IR 9 UN 9.52 9.0 16.00 0.17 1.2 1.7 1 • 16IR/L 8 UN 9.52 8.0 16.00 0.19 1.1 1.5 1 • • • • • 16IRB 8 UN (1) 9.52 8.0 16.00 0.19 1.1 1.5 1 • 16IRM 8 UN (1) 9.52 8.0 16.00 0.20 1.1 1.5 1 • • • • 22IR 16 UN 3M (2) 12.70 16.0 22.00 0.09 2.5 4.0 3 • 22IR 12 UN 2M (2) 12.70 12.0 22.00 0.12 2.2 3.4 2 • 22IR 12 UN 3M (2) 12.70 12.0 22.00 0.12 3.3 5.3 3 • 22IR/L 7 UN 12.70 7.0 22.00 0.22 1.6 2.3 1 • • • 22IR 6 UN 12.70 6.0 22.00 0.26 1.6 2.3 1 • • • 22IR 5 UN 12.70 5.0 22.00 0.32 1.6 2.3 1 • • • 22UIRL 4.5 UN 12.70 4.5 22.00 0.36 2.4 11.0 1 • 22UIRL 4 UN 15.88 4.0 22.00 0.36 2.4 11.0 1 • 27IR 8 UN 2M (2) 15.88 8.0 27.00 0.19 3.1 4.9 2 • 27IR 4.5 UN 15.88 4.5 27.00 0.36 1.7 2.4 1 • 27IR/L 4 UN 15.88 4.0 27.00 0.41 1.8 2.7 1 • • • • For Insert Identification System, see page 489 • Tolerance: class 2B,ANSI B1, 3M-1986. • 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: MGSIR/L (534) • SIR/L (531) 505