THREADING
Number of Passes
WF
RE
WF2
Breaker
WF
WF2
Number of Passes
THREADING
MICRO-MINI TWIN
y CT STANDARD
DMIN PDX PDX DCON H
LU LF
PDX PDX CDX
PNA
60°
Stock Threads
Dimensions (mm)
Order Number Micro GrainCarbideCoatedTF15VP15TF Metric Screw Unified Coarse ScrewThreadPitch(mm)ThreadPitch (thread/inch) DMINREDCONLFLUCDX WF PDX WF2 H
CT0305RS-M4 a a Without > M4 0.5 ─1.0 > NO.8-32UNC 36 ─24 3 0.03 3 50 5.2 6 1.3 0.6 1.2 2.7
CT03RS-M4CT03RS-M4B a a Without > M4 0.5 ─1.0 36 ─24 3 0.03 3 50 10.2 6 1.3 0.6 1.2 2.7aaWith> M40.5 ─1.0> NO.8-36UNF36 ─2430.0335010.261.30.61.22.7
CT0407RS-M6 a a Without > M6 0.75 ─1.25 > 1/4-20UNC 28 ─20 4.5 0.05 4 60 7.6 7 1.8 0.8 1.7 3.6
CT04RS-M6CT04RS-M6B aa aa Without > M6With> M60.75 ─1.250.75 ─1.25> 1/4-28UNF 28 ─2028 ─204.5 0.054.50.05446015.6 7 1.8 0.8 1.7 3.66015.671.80.81.73.6
CT0511RS-M8 a a Without > M8 0.75 ─1.5 > 5/16-18UNC 24 ─18 6 0.05 5 70 11 8 2.3 1 2.2 4.5
CT05RS-M8CT05RS-M8B aa aa Without > M8 0.75 ─1.5With> M80.75 ─1.5> 5/16-24UNF 24 ─1824 ─1866 0.05 5 70 210.05570218 2.3 1 2.2 4.582.312.24.5
CT0611RS-M10 a a Without > M10 0.75 ─1.75 > 3/8-16UNC 24 ─16 7 0.05 6 75 11 8 2.8 1 2.2 5.4
CT06RS-M10 aCT06RS-M10Baaa Without > M10 0.75 ─1.75With> M100.75 ─1.75> 3/8-24UNF 24 ─1624 ─1677 0.05 6 75 210.05675218 2.8 1 2.2 5.482.812.25.4
THREAD PITCH FOR THE CT TYPE
G Metric Thread Unified Thread
Order Number P (mm) P (thread/inch)
0.50 0.70 0.75 0.80 1.00 1.25 1.50 1.75 36 32 28 24 20 18 16
CT03RS-M4/M4B u u u u u ─ ─ ─ u u u u ─ ─ ─
CT04RS-M6/M6B ─ ─ u ─ u u ─ ─ ─ ─ u u u ─ ─
CT05RS-M8/M8B ─ ─ u ─ u u u ─ ─ ─ ─ u u u ─
CT06RS-M10/M10B ─ ─ u ─ u u u u ─ ─ ─ u u u u
Note 1) For internal threads that are larger than the minimum diameter of the Micro Mini Twin (CT type) it is possible to machining the above
thread pitches. For the minimum diameter please refer to the standards.
DEPTH OF CUT FOR THE CT TYPE
a Metric Thread a Unified Thread
P (pitch) 0.5 0.7 0.75 0.8 1 1.25 1.5 1.75 P (thread/inch) 36 32 28 24 20 18 16
D.O.C. (mm) 0.3 0.43 0.46 0.44 0.49 0.62 0.6 0.76 0.92 1.09 D.O.C. (inch) .0169 .0193 .0220 .0213 .0260 .0252 .0307 .0343 .0386
Re* (Corner radius) 0.03 0.03 0.03 0.05 0.03 0.03 0.05 0.05 0.05 0.05 Re* (Corner radius) .0012 .0012 .0012 .0020 .0012 .0020 .0020 .0020 .0020
1 0.06 0.06 0.06 0.06 0.06 0.07 0.07 0.07 0.07 0.07 1 .0024 .0024 .0028 .0024 .0028 .0028 .0028 .0028 .0028
2 0.05 0.06 0.06 0.06 0.06 0.07 0.07 0.07 0.07 0.07 2 .0024 .0024 .0024 .0024 .0028 .0028 .0028 .0028 .0028
3 0.05 0.06 0.06 0.05 0.06 0.06 0.06 0.07 0.07 0.07 3 .0024 .0024 .0024 .0024 .0024 .0024 .0028 .0028 .0028
4 0.04 0.05 0.05 0.05 0.05 0.06 0.06 0.07 0.07 0.07 4 .0020 .0020 .0024 .0020 .0024 .0024 .0024 .0028 .0028
5 0.04 0.05 0.05 0.05 0.05 0.05 0.06 0.06 0.07 0.07 5 .0020 .0020 .0020 .0020 .0024 .0024 .0024 .0028 .0028
6 0.03 0.04 0.04 0.04 0.04 0.05 0.05 0.06 0.06 0.07 6 .0016 .0016 .0020 .0020 .0020 .0020 .0024 .0024 .0024
7 0.03 0.04 0.04 0.04 0.04 0.05 0.05 0.06 0.06 0.06 7 .0016 .0016 .0016 .0016 .0020 .0020 .0024 .0024 .0024
8 0.04 0.04 0.03 0.04 0.04 0.04 0.05 0.06 0.06 8 .0016 .0016 .0016 .0016 .0016 .0020 .0020 .0024 .0024
9 0.03 0.03 0.03 0.03 0.04 0.04 0.05 0.05 0.06 9 .0012 .0012 .0016 .0016 .0016 .0016 .0020 .0020 .0024
10 0.03 0.03 0.03 0.04 0.04 0.05 0.05 0.06 10 .0012 .0012 .0012 .0016 .0016 .0020 .0020 .0024
11 0.03 0.03 0.03 0.04 0.05 0.05 11 .0012 .0012 .0012 .0012 .0012 .0016 .0020 .0020
12 0.03 0.03 0.04 0.05 0.05 12 .0012 .0012 .0012 .0012 .0016 .0020 .0020
13 0.03 0.04 0.04 0.05 13 .0012 .0012 .0016 .0016 .0020
14 0.03 0.04 0.05 14 .0012 .0012 .0016 .0016
15 0.04 0.04 15 .0012 .0012 .0016
16 0.04 0.04 16 .0012 .0016
17 0.03 0.04 17 .0012
18 0.04 18 .0012
19 0.04 19
20 0.03 20
* Even though the pitch and CT03RS-M4B the maybe corner the same, the radius is 0.03 depth of cut varies according to mm(.0012 inch), for other types the it is corner radius. For the 0.05 mm(.0020 inch). Micro Mini For further Twin CT type CT03RS-M4, details please refer to the standards section.
a : USA Stock
G034