THREADINGMICRO-MINI TWIN

y CT STANDARD

RE

DMINPDXPDXDCONH
LU
LF
PDXPDXCDX
PNA
60°
StockThreads
Dimensions (mm)
Micro GrainMetric ScrewUnified Coarse Screw
Order NumberCarbide Coated
ThreadPitchThreadPitchDMIN RE DCON LF LU CDX WF PDX WF2 H
TF15 VP15TF(mm)(thread/inch)
CT0305RS-M4Without>M40.5 ─1.0NO.8-32UNC36 ─ 2430.03 3 50 5.2 6 1.3 0.6 1.2 2.7

a a >

CT03RS-M4 Without >M4 0.5 ─1.0 36 ─ 24 3 0.03 3 50 10.2 6 1.3 0.6 1.2 2.7

a a NO.8-36UNF

CT03RS-M4B With M4 0.5 ─1.0 > 36 ─ 24 3 0.03 3 50 10.2 6 1.3 0.6 1.2 2.7

a a >

CT0407RS-M6 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

a a >

CT04RS-M6 Without >M6 0.75 ─1.25 28 ─20 4.5 0.05 4 60 15.6 7 1.8 0.8 1.7 3.6

a a 1/4-28UNF

CT04RS-M6B With M6 0.75 ─1.25 > 28 ─20 4.5 0.05 4 60 15.6 7 1.8 0.8 1.7 3.6

a a >

CT0511RS-M8Without>M80.75 ─1.5>5/16-18UNC24 ─1860.05 5 70 118 2.3 12.2 4.5
aa
CT05RS-M8aaWithout>M80.75 ─1.524 ─1860.05 5 70 218 2.3 12.2 4.5
CT05RS-M8BWithM80.75 ─1.5>5/16-24UNF24 ─1860.05 5 70 218 2.3 12.2 4.5
aa>
CT0611RS-M10aaWithout>M100.75 ─1.75>3/8-16UNC24 ─1670.05 6 75 118 2.8 12.2 5.4
CT06RS-M10Without>M100.75 ─1.7524 ─1670.05 6 75 218 2.8 12.2 5.4
aa3/8-24UNF
CT06RS-M10BWithM100.75 ─1.75>24 ─1670.05 6 75 218 2.8 12.2 5.4
aa>
THREAD PITCH FOR THE CT TYPE
G
Metric ThreadUnified Thread

Order Number P (mm) P (thread/inch)

0.50 0.70 0.75 0.80 1.00 1.25 1.50 1.753620 24 28 32 1816
CT03RS-M4/M4Bu u u uu─ ─u─ u u u ─
CT04RS-M6/M6Bu ─ ─ ─u─ uu u u ─ ─
CT05RS-M8/M8Bu ─ ─ ─uu uu u ─ ─ u
CT06RS-M10/M10Bu ─ ─ ─uu uuu u ─ ─ uu
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 Threada UnifiedThread
P (pitch)0.5 0.71 0.8 0.75 1.25 1.5 1.75P (thread/inch)363220 24 28 1816
D.O.C. (mm)0.3 0.43 0.46 0.44 0.49 0.62 0.60.76 0.92 1.09D.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 0.05Re* (Corner radius) .0012 .0012 .0012 .0020 .0012 .0020 .0020 .0020 .0020
10.06 0.06 0.06 0.06 0.06 0.07 0.07 0.07 0.07 0.071.0024 .0024 .0028 .0024 .0028 .0028 .0028 .0028 .0028
20.05 0.06 0.06 0.06 0.06 0.07 0.07 0.07 0.07 0.072.0024 .0024 .0024 .0024 .0028 .0028 .0028 .0028 .0028
30.05 0.06 0.06 0.05 0.06 0.06 0.06 0.07 0.07 0.073.0024 .0024 .0024 .0024 .0024 .0024 .0028 .0028 .0028
40.04 0.05 0.05 0.05 0.05 0.06 0.06 0.07 0.07 0.074.0020 .0020 .0024 .0020 .0024 .0024 .0024 .0028 .0028
50.04 0.05 0.05 0.05 0.05 0.05 0.06 0.06 0.07 0.075.0020 .0020 .0020 .0020 .0024 .0024 .0024 .0028 .0028
60.03 0.04 0.04 0.04 0.04 0.05 0.05 0.06 0.06 0.076.0016 .0016 .0020 .0020 .0020 .0020 .0024 .0024 .0024
70.03 0.04 0.04 0.04 0.04 0.05 0.05 0.06 0.06 0.067.0016 .0016 .0016 .0016 .0020 .0020 .0024 .0024 .0024
80.04 0.04 0.03 0.04 0.04 0.04 0.05 0.06 0.068.0016 .0016 .0016 .0016 .0016 .0020 .0020 .0024 .0024
90.03 0.03 0.03 0.03 0.04 0.04 0.05 0.05 0.069.0012 .0012 .0016 .0016 .0016 .0016 .0020 .0020 .0024
100.03 0.03 0.03 0.04 0.04 0.05 0.05 0.0610.0012 .0012 .0012 .0016 .0016 .0020 .0020 .0024
110.03 0.03 0.03 0.04 0.05 0.0511.0012 .0012 .0012 .0012 .0012 .0016 .0020 .0020
120.03 0.03 0.04 0.05 0.0512.0012 .0012 .0012 .0012 .0016 .0020 .0020
130.03 0.04 0.04 0.0513.0012 .0012 .0016 .0016 .0020
140.03 0.04 0.0514.0012 .0016 .0016 .0012
150.04 0.0415.0012 .0012 .0016
160.04 0.0416.0012 .0016
170.03 0.0417.0012
180.04 18.0012
190.04 19

* Even though the pitch maybe the same, the depth of cut varies according to the corner radius. For the Micro Mini Twin CT type CT03RS-M4, and CT03RS-M4B the corner radius is 0.03 mm(.0012 inch), for other types it is 0.05 mm(.0020 inch). For further details please refer to the standards section. G034 <MICRO-MINI TWIN is available in 1 piece in one pack>