HI XN Type Threading Inserts XN Type Threading Inserts HI Shape Designation TPI TRF CF RC E Shape Designation TPI TRF CF RC E XND 3040R/L 5 0.445 2.08 XNS 3R / L16 16 0.605 3.79 (Partial Profile) 3038R/L 4 0.902 2.08 3R/L14 14 0.701 3.79 4040R/L 5 0.445 3.25 3R/L12 12 0.828 3.79 4050R/L 4 0.572 3.25 3R/L10 10 0.940 3.79 3R/L8 8 1.209 3.79 3R/L6 6 1.656 3.79 3R/L5 5 2.014 3.79 XNDC 3040R/L3 5 3.00 0.445 3.73 XNTB 2R/LA 16-20 0.076 3.20 (Cresting) 4040R / L 3 5 3.00 0.445 3.73 3R/LA 8-16 0.165 4.17 4050R / L2 4 3.00 0.572 4.65 4R/LA 4-6 0.254 5.23 4050R / L 3 4 3.00 0.572 4.65 4038R/L2 4 2.00 0.902 4.65 a - 1/2arcta (tot/ 12) E 7*; RC XNA 3R/L16 16 0.523 3.79 XNTB 2R/LB 16-20 0.076 0.25 3R/L14 14 0.607 3.79 3R/LB 8-16 0.165 0.31 071 072 3R/L12 12 0.719 3.79 4R/LB 4-6 0.254 0.41 3R/L10 10 0.810 3.79 4R/L10 10 0.810 5.13 3R/L8 8 1.044 3.79 4R / L 8 8 1.044 5.13 3R/L6 6 1.438 3.79 TTtT ' 29* 4R / L6 6 1.438 5.133R/L551.7503.79 4R / L 5 5 1.750 5.13 3R/L4 4 2.223 3.79 4R / L 4 4 2.223 5.13 6R/L3 3 3.007 7.19 , 6R/L25 2.5 3.635 7.19 29“ I E 6R/L2 2 4.577 7.19 CF