HI Thread Insert Thread Insert HI ISO Metric American UN (UN, UNO, UNF, UNEF, UNS) Pitch Dimensions Pitch Dimensions QCD. Designation Designation(Right)(Left) (mm) d L hmin x f Picture CD CL Designation Designation(Right)(Left) (tpi) d L hmin x f Picture 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 40z 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 1M .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 16-0.45ISO 16-0.45ISO 0.45 9.525 16 0.26 0.8 0.4 1/4P Internac 16-64UN 16-64UN 64 9.525 16 0.24 0.8 0.4 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 16 - 44UN 16-44UN 44 9.525 16 0.35 0.6 0.6 026 16-0.75ISO 16-0.75ISO 0.75 9.525 16 0.43 0.6 0.6 16 - 40UN 16-40UN 40 9.525 16 0.39 0.6 0.6 x 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 Interna 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- 11UN 16-11UN 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