HI Thread Insert Thread Insert HI ISO Metric American UN (UN, UNO , UNF, UNEF, UNS) Pitch Dimensions Pitch Dimensions CD CD Q. Designation Designation CL Designation Designation Picture Picture (Right ) (Left) ( mm) d L hmin x f (Right) (Left) (tpi) d L hmin x f IR 11 - 0.35ISO IL 11 - 0.35ISO 0.35 6.35 11 0.20 0.8 0.3 ER 11 -72UN EL 11 - 72UN 72 6.35 11 0.22 0.8 0.4 11 - 0.4ISO 11 - 0.4ISO 0.4 6.35 11 0.23 0.8 0.4 11 - 64UN 11 - 64UN 64 6.35 11 0.24 0.8 0.4 11 - 0.45ISO 11 - 0.45ISO 0.45 6.35 11 0.26 0.8 0.4 11 - 56UN 11 - 56UN 56 6.35 11 0.28 0.7 0.4 11 - 0.5ISO 11 - 0.5ISO 0.5 6.35 11 0.29 0.6 0.4 11 48UN - 11 48UN - 48 6.35 11 0.32 0.6 0.6 11 - 0.6ISO 11 - 0.6ISO 0.6 6.35 11 0.35 0.6 0.6 11 44UN - 11 44UN - 44 6.35 11 0.35 0.6 0.6 11 - 0.7ISO 11 - 0.7ISO 0.7 6.35 11 0.40 0.6 0.6 11 - 40UN 11 - 40UN 40 z 6.35 11 0.39 0.6 0.6 11 - 0.75ISO 11 - 0.75ISO 0.75 6.35 11 0.43 0.6 0.6 11 - 36UN 11 - 36UN 36 6.35 11 0.43 0.6 0.6 11 - 0.8ISO 11 - 0.8ISO 0.8 6.35 11 0.46 0.6 0.6 11 - 32UN 11 - 32UN 32 6.35 11 0.49 0.6 0.6 1 M . OISO 1 M .OISO 1.0 6.35 11 0.58 0.6 0.7 11 - 28UN 11 - 28UN 28 6.35 11 0.56 0.6 0.7 11 - 1.25ISO 11 - 1.25ISO 1.25 6.35 11 0.72 0.8 0.9 11 - 27UN 11 - 27UN 27 6.35 11 0.58 0.7 0.8 11 - 1.5ISO 11 - 1.5ISO 1.5 6.35 11 0.87 0.8 1.0 11 - 24UN 11 - 24UN 24 6.35 11 0.65 0.7 0.8 11 - 1.75ISO 11 - 1.75ISO 1.75 6.35 11 1.01 0.9 1.1 11 - 20UN 11 - 20UN 20 6.35 11 0.78 0.8 0.9 11 - 2.0ISO 11 - 2.0ISO 2.0 6.35 11 1.15 0.9 1.1 11 - 18UN 11 18UN - 18 6.35 11 0.87 0.8 1.0 11 - 2.5ISO 11 - 2.5ISO 2.5 6.35 11 1.44 0.8 1.1 11 - 16UN 11 - 16UN 16 6.35 11 0.97 0.9 16 - 0.35ISO 16 - 0.35ISO 0.35 9.525 16 0.20 0.8 0.3 11 - 14UN 11 - 14UN 14 6.35 11 0.9 16- 0.4ISO 16 - 0.4ISO 0.4 9.525 16 0.23 0.8 0.4 16 - 72UN 16 - 72UN 72 9.525 16 0.22 0.8 0.4 1/4P Interna 16 - 0.45ISO 16 - 0.45ISO 0.45 9.525 16 0.26 0.8 0.4 16 - 64UN 16 - 64UN 64 9.525 16 0.24 0.8 0.4 c CD 16 - 0.5ISO 16 0.5ISO - 0.5 9.525 16 0.29 0.6 0.4 16 - 56UN 16 - 56UN 56 9.525 16 0.28 0.7 0.4 c 16 0.6ISO - 16 0.6ISO - 0.6 9.525 16 0.35 0.6 0.6 16 - 48UN 16 - 48UN 48 9.525 16 0.32 0.6 0.6 025 16 0.7ISO 16 0.7ISO 0.7 9.525 16 0.40 0.6 0.6 1/8P External 026 - - 16 44UN - 16 44UN - 44 9.525 16 0.35 0.6 0.6 16 0.75ISO 16 0.75ISO 0.75 9.525 16 0.43 0.6 0.6 x - - 16 - 40UN 16 40UN - 40 9.525 16 0.39 0.6 0.6 Interna 16 0.8ISO - 16 0.8ISO - 0.8 9.525 16 0.46 0.6 0.6 c 16 - 36UN 16 - 36UN 36 9.525 16 0.43 0.6 0.6 CD 16 1.0ISO - 16 - 1.0ISO 1.0 9.525 16 0.58 0.6 0.7 X 16 - 32UN 16 - 32UN 32 9.525 16 0.49 0.6 0.6 L LU 16 1.25ISO - 16 - 1.25ISO 1.25 9.525 16 0.72 0.8 0.9 16 - 28UN 16 - 28UN 28 9.525 16 0.56 0.6 0.7 16- 1.5ISO 16 - 1.5ISO 1.5 9.525 16 0.87 0.8 1.0 16 - 27UN 16 - 27UN 27 9.525 16 0.58 0.7 0.8 1/8P External 16- 1.75ISO 16 - 1.75ISO 1.75 9.525 16 1.01 0.9 1.2 16 - 24UN 16 - 24UN 24 9.525 16 0.65 0.7 0.8 16- 2.0ISO 16 - 2.0ISO 2.0 9.525 16 1.15 1.0 1.3 16 - 20UN 16 - 20UN 20 9.525 16 0.78 0.8 0.9 16- 2.5ISO 16 - 2.5ISO 2.5 9.525 16 1.44 1.1 1.5 16 - 18UN 16 18UN - 18 9.525 16 0.87 0.8 1.0 16 - 3.0ISO 16 - 3.0ISO 3.0 9.525 16 1.73 1.1 1.5 16 - 16UN 16 - 16UN 16 9.525 16 0.97 0.9 1.1 22 - 3.5ISO 22 - 3.5ISO 3.5 12.7 22 2.02 1.6 2.3 16 - 14UN 16 - 14UN 14 9.525 16 1.11 1.0 1.2 22 - 4.0ISO 22 - 4.0ISO 4.0 12.7 22 2.31 1.6 2.3 16 - 13UN 16 - 13UN 13 9.525 16 1.20 1.0 1.3 22 - 4.5ISO 22 - 4.5ISO 4.5 12.7 22 2.60 1.6 2.4 16 - 12UN 16 - 12UN 12 9.525 16 1.30 1.4 22 - 5.0ISO 22 - 5.0ISO 5.0 12.7 22 2.89 1.6 2.3 16 - 11.5UN 16 - 11.5UN 11.5 9.525 16 1.35 1.5 27 - 5.5ISO 27 - 5.5ISO 5.5 15.875 27 3.17 1.6 2.3 16 - 11 UN 16 - 11 UN 11 9.525 16 1.42 1.1 1.5 27 - 6.0ISO 27 - 6.0ISO 6.0 15.875 27 3.46 1.8 2.5 16 - 10UN 16 - 10UN 10 9.525 16 1.56 1.1 1.5 27-8.0ISO 27-8.0ISO 8.0 15.875 27 4.26 2.2 3.2 16 9UN - 16 9UN - 9 9.525 16 1.73 1.2 1.7 16 8UN - 16 8UN - 8 9.525 16 1.95 1.2 1.6 22 - 7UN 22 - 7UN 7 12.7 22 2.22 1.6 2.3 22 - 6UN 22 - 6UN 6 12.7 22 2.60 1.6 2.3 22 - 5UN 22 - 5UN 5 12.7 22 3.12 1.7 2.5 27 - 4.5UN 27 - 4.5UN 4.5 15.875 27 3.46 1.9 2.7 27 - 4UN 27 - 4UN 4 15.875 27 3.89 2.1 3.0