Groove milling tools | CoroMill® 327 CoroMill® 327, solid carbide head for thread milling​​ For internal threads. UN 60° topping Common data values RPMX [1/min] 80000 Metric (mm) P S K M N 1025 1025 1025 1025 1025 Ordering code DC 1 DCONMS LF 1 LF 2 LB _ _ _ BD OAL TPI ZEFP APMX KAPR [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [deg] 327R09-18 08UN-TH ○ ○ ○ ○ ○ 17.70 9.00 4.40 5.85 4.4 14.2 5.85 8 3 1.7 30.0 327R09-18 08UN-THM ○ ○ ○ ○ ○ 17.70 9.00 4.40 5.85 4.4 14.2 5.85 8 6 1.7 30.0 327R09-18 10UN-TH ○ ○ ○ ○ ○ 17.70 9.00 4.65 5.85 4.7 15.0 5.85 10 3 1.4 30.0 327R09-18 11UN-TH ○ ○ ○ ○ ○ 17.70 9.00 4.75 5.85 4.8 15.2 5.85 11 3 1.2 30.0 327R09-18 12UN-TH ○ ○ ○ ○ ○ 17.70 9.00 4.85 5.85 4.8 15.4 5.85 12 3 1.1 30.0 327R09-18 12UN-THM ○ ○ ○ ○ ○ 17.70 9.00 4.85 5.85 4.8 15.4 5.85 12 6 1.1 30.0 327R09-18 14UN-TH ○ ○ ○ ○ ○ 17.70 9.00 4.95 5.85 4.9 15.7 5.85 14 3 1.0 30.0 327R09-18 16UN-TH ○ ○ ○ ○ ○ 17.70 9.00 5.00 5.85 5.0 16.0 5.85 16 3 0.9 30.0 327R09-18 18UN-TH ○ ○ ○ ○ ○ 17.70 9.00 5.10 5.85 5.1 16.2 5.85 18 3 0.8 30.0 327R09-18 20UN-TH ○ ○ ○ ○ ○ 17.70 9.00 5.15 5.85 5.2 16.3 5.85 20 3 0.7 30.0 ● = First choice ○ = Good choice 332