Thread Insert A\ American UN(UN,UNC,UNF,UNEF,UNS)(M Chip Breaker) American UN (M+ Style) Type Designation(Right) Designation Pitch(Left)tpid DimensionsLhmin x f Picture Type Designation (Right) Designation Pitch Dimensions(Left)tpidLhminxf Tooth Picture IRM 11-20UN 20 6.35 11 0.73 0.8 0.9 IR 16-24UN 2M 24 9.525 16 0.61 1.1 1.7 2 11-18UN 18 6.35 11 0.81 0.8 1.0 16-20UN 3M 20 9.525 16 0.73 1.4 2.0 3 16-24UN 24 9.525 16 0.61 0.8 0.8 16-18UN 2M 18 9.525 16 0.81 1.5 2.2 2 16-20UN 20 9.525 16 0.73 0.8 0.9 -x V4P Inter6n0a;l 16-16UN 2M 16 9.525 16 0.92 1.7 2.5 2 Internal 16-18UN 18 9.525 16 0.81 0.8 1.0 Internal 16-14UN 2M 14 9.525 16 1.05 1.9 2.8 2 16-16UN 16 9.525 16 0.92 0.9 1.1 16-12UN 2M 12 9.525 16 1.22 2.2 3.3 2 P External 16-14UN 14 9.525 16 1.05 1.2 1.5 22-16UN 3M 16 12.7 22 0.92 2.6 4.1 3 1$P External 16-12UN 12 9.525 16 1.22 1.2 1.5 22-14UN 2M 14 12.7 22 1.05 1.9 2.8 2 16-10UN 10 9.525 16 1.47 1.2 1.5 22-12UN 2M 12 12.7 22 1.22 2.2 3.3 2 16- 8UN 8 9.525 16 1.83 1.3 1.7 22-12UN 3M 12 12.7 22 1.22 3.4 5.4 3 27-8UN 2M 8 15.875 27 1.83 3.1 4.9 2 American UN (U Style) Type Designation(Right + Left) Pitch Dimensions PicturemmdLhminxf UI 08-13UN 13 4.76U 8 1.20 1.0 4.0 08-12UN 12 4.76U 8 1.30 0.9 4.0 f 08 -11UN 11 4.76U 8 1.42 0.9 4.0 11-11UN 11 6.35U 11 1.33 1.2 5.5 X Internal L 22-4.5UN 4.5 12.7U 22 3.26 2.4 11.0 1/8P External 22-4UN 4 12.7U 22 3.57 2.4 11.0 d 27-3UN 3 15.875U 27 4.89 2.7 13.7 33-2UN 2 19.05U 33 7.79 3.6 16.9 American UN (V Style) Type Designation(Right) Designation Pitch(Left)tpi d DimensionsLhminx f T Picture VIR 27-4UN VIL 27-4UN 4 15.875V 27 3.67 1.0 3.3 6.35 V4P Internal 60 Internal 27-3UN 27- 3UN 3 15.875V 27 4.89 1.8 5.2 8.70 1/®P External 1 301 302