Thread data sheet

Basic Thread Dimensions

Property mm Inch
Nominal Diameter 105 4.1339
Pitch (Distance) 2 0.0787
Pitch Diameter 103.701 4.0827
Minor Diameter 102.835 4.0486
Thread Height 1.083 0.0426
Addendum 0.65 0.0256
Crest (External)
Root (Internal)		 0.25 0.0098
Tap Drill Size
(75% depth)		 103.05 4.057
Lead Angle
(Single Start)		 0.35°
Thread Family Metric Fine Pitch (MF)
Relevant Standards ISO 68-1, ISO 9651-1, ISO 965-2, ISO 261,DIN 13
Equivalent InchThread4 1/8 - 12 12-UN

For more threading data scroll down, or use the Thread Calculator

Choose the Threading Data you want to explore

Unified Inch Thread Classes

Tolerance Classes

Thread Milling CNC program

Thread Milling Gcode

Turning Gcode

Over Wire

Unified Inch Thread Classes

Tolerance Classes

Thread Milling Gcode

Turning Gcode

Over Wire

M105 X 2Possible Thread Classes

External Threads

4g, 4h, 6e, 6g, 6h, 8e, 8g, 5g4g, 5h4h, 5g6g, 7g6g, 7h6h, 7e6e, 9e8e, 9g8g

Metric ISO External Thread - Tolerance sketch

Internal Threads

4H, 5H, 5G, 6H, 6G, 7H, 7G, 8G

Metric ISO Internal Thread - Tolerance sketch

M105 X 2 4g (External)

* Permisable values for thread Class 4g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.782 - 104.962 4.1253 - 4.1324
d2 Pitch Diameter 103.545 - 103.663 4.0766 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.454 0.0098 - 0.0179
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 4h (External)

* Permisable values for thread Class 4h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 104.82 - 105 4.1268 - 4.1339
d2 Pitch Diameter 103.583 - 103.701 4.0781 - 4.0827
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.454 0.0098 - 0.0179
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 6e (External)

* Permisable values for thread Class 6e

# Description Value (mm) Value (Inch)
es Allowance 0.071 (Ref) 0.0028 (Ref)
d Major Diameter 104.649 - 104.929 4.12 - 4.1311
d2 Pitch Diameter 103.44 - 103.63 4.0724 - 4.0799
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.506 0.0098 - 0.0199
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 6g (External)

* Permisable values for thread Class 6g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.682 - 104.962 4.1213 - 4.1324
d2 Pitch Diameter 103.473 - 103.663 4.0737 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.506 0.0098 - 0.0199
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 6h (External)

* Permisable values for thread Class 6h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 104.72 - 105 4.1228 - 4.1339
d2 Pitch Diameter 103.511 - 103.701 4.0752 - 4.0827
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.506 0.0098 - 0.0199
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 8e (External)

* Permisable values for thread Class 8e

# Description Value (mm) Value (Inch)
es Allowance 0.071 (Ref) 0.0028 (Ref)
d Major Diameter 104.479 - 104.929 4.1133 - 4.1311
d2 Pitch Diameter 103.33 - 103.63 4.0681 - 4.0799
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.575 0.0098 - 0.0226
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 8g (External)

* Permisable values for thread Class 8g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.512 - 104.962 4.1146 - 4.1324
d2 Pitch Diameter 103.363 - 103.663 4.0694 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.575 0.0098 - 0.0226
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 5g4g (External)

* Permisable values for thread Class 5g4g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.782 - 104.962 4.1253 - 4.1324
d2 Pitch Diameter 103.513 - 103.663 4.0753 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.478 0.0098 - 0.0188
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 5h4h (External)

* Permisable values for thread Class 5h4h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 104.82 - 105 4.1268 - 4.1339
d2 Pitch Diameter 103.551 - 103.701 4.0768 - 4.0827
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.478 0.0098 - 0.0188
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 5g6g (External)

* Permisable values for thread Class 5g6g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.682 - 104.962 4.1213 - 4.1324
d2 Pitch Diameter 103.513 - 103.663 4.0753 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.478 0.0098 - 0.0188
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 7g6g (External)

* Permisable values for thread Class 7g6g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.682 - 104.962 4.1213 - 4.1324
d2 Pitch Diameter 103.427 - 103.663 4.0719 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.536 0.0098 - 0.0211
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 7h6h (External)

* Permisable values for thread Class 7h6h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 104.72 - 105 4.1228 - 4.1339
d2 Pitch Diameter 103.465 - 103.701 4.0734 - 4.0827
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.536 0.0098 - 0.0211
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 7e6e (External)

* Permisable values for thread Class 7e6e

# Description Value (mm) Value (Inch)
es Allowance 0.071 (Ref) 0.0028 (Ref)
d Major Diameter 104.649 - 104.929 4.12 - 4.1311
d2 Pitch Diameter 103.394 - 103.63 4.0706 - 4.0799
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.536 0.0098 - 0.0211
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 9e8e (External)

* Permisable values for thread Class 9e8e

# Description Value (mm) Value (Inch)
es Allowance 0.071 (Ref) 0.0028 (Ref)
d Major Diameter 104.479 - 104.929 4.1133 - 4.1311
d2 Pitch Diameter 103.255 - 103.63 4.0652 - 4.0799
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.618 0.0098 - 0.0243
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 9g8g (External)

* Permisable values for thread Class 9g8g

# Description Value (mm) Value (Inch)
es Allowance 0.038 (Ref) 0.0015 (Ref)
d Major Diameter 104.512 - 104.962 4.1146 - 4.1324
d2 Pitch Diameter 103.288 - 103.663 4.0665 - 4.0812
R Root Radius 0.25 (Min) 0.0098 (Min)
C Root Truncation 0.25 - 0.618 0.0098 - 0.0243
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 4H (Internal)

* Permisable values for thread Class 4H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 102.835 - 103.071 4.0486 - 4.0579
D2 Pitch Diameter 103.701 - 103.861 4.0827 - 4.089
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 5H (Internal)

* Permisable values for thread Class 5H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 102.835 - 103.135 4.0486 - 4.0604
D2 Pitch Diameter 103.701 - 103.901 4.0827 - 4.0906
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 5G (Internal)

* Permisable values for thread Class 5G

# Description Value (mm) VValue (Inch)
EL Allowance 0.038 (Ref) 0.0015 (Ref)
D1 Minor Diameter 102.873 - 103.173 4.0501 - 4.0619
D2 Pitch Diameter 103.739 - 103.939 4.0842 - 4.0921
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 6H (Internal)

* Permisable values for thread Class 6H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 102.835 - 103.21 4.0486 - 4.0634
D2 Pitch Diameter 103.701 - 103.951 4.0827 - 4.0926
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 6G (Internal)

* Permisable values for thread Class 6G

# Description Value (mm) VValue (Inch)
EL Allowance 0.038 (Ref) 0.0015 (Ref)
D1 Minor Diameter 102.873 - 103.248 4.0501 - 4.0649
D2 Pitch Diameter 103.739 - 103.989 4.0842 - 4.0941
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 7H (Internal)

* Permisable values for thread Class 7H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 102.835 - 103.31 4.0486 - 4.0673
D2 Pitch Diameter 103.701 - 104.016 4.0827 - 4.0951
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 7G (Internal)

* Permisable values for thread Class 7G

# Description Value (mm) VValue (Inch)
EL Allowance 0.038 (Ref) 0.0015 (Ref)
D1 Minor Diameter 102.873 - 103.348 4.0501 - 4.0688
D2 Pitch Diameter 103.739 - 104.054 4.0842 - 4.0966
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

M105 X 2 8G (Internal)

* Permisable values for thread Class 8G

# Description Value (mm) VValue (Inch)
EL Allowance 0.038 (Ref) 0.0015 (Ref)
D1 Minor Diameter 102.873 - 103.473 4.0501 - 4.0737
D2 Pitch Diameter 103.739 - 104.139 4.0842 - 4.1
D Major Diameter 105 (Min) 4.1339 (Min)
LE Normal Length of Engagement 12 - 36 0.4724 - 1.4173

* Back to Thread Class Selection

Over Wire Measurements for M105 X 2


* OverWire is a measuring method to obatin the pitch diameter of threads. It is mostly used when a manufacturer does not have a Go/Nogo gauge for a thread. You can learn more about it here

mm Inch
Permissible Wire Diameter Range 1.01 - 2.021 0.0398 - 0.0796
Ideal Wire Diameter 1.155 0.0455
Possible Wires
From Standard Sets		 * 1.01
* 1.155
* 1.443
* 1.732
* 2.021
 * 0.0642
* 0.0722
* 0.077

Once you know your wire diameter, you need to find out what is the premissable Measurement for your pitch diameter (Depending on the class). Use our Over Wire Calculator to find out!

CNC Gcode Program for Turning of M105 X 2

The below sample Gcode is configured for:

  • Fanuc Controller
  • External RH Thread
  • Right hand tool, machining towards the chuck
  • Flank Infeed method with contant volume
  • Flank Infeed method with contant volume
  • Cutting conditions for steel
  • Default number of passes

You can configure all the above parameters and much more in our Thread Turning Gcode Generator 


%
O0100
(MACHINING DOCTOR - THREADING CNC PROGRAM)
(CONTROLER - FANUC A)
(THREAD - D=105 MM, P=2 MM, L=20 MM)
(APPLICATION - EXTERNAL TURNING, TOWARDS CHUCK, RH TOOL, RH THREAD)
(FEED - 10 PASSES, FLANK, CONSTANT VOLUME)
(FINISH PASS - 0.032 MM)
(WITH CHAMFER -  NO)
G28 U0 W0
T0101 G99 G97 S303 M03
G00 Z6.0
X 115.0 M08
G76 P010060 Q32 R0.032
G76 X102.546 Z-20.0 P1227 Q378 F2.0 R0.00 
G28 U0 W0
M09
M30
%

CNC Gcode Program for Thread Milling of M105 X 2

The below sample Gcode is configured for:

  • Fanuc Controller
  • Internal RH Thread
  • Climb Milling
  • Cutter diameter: 70% of the thread diameter
  • Single tooth Thread Mill cutter
  • Cutting conditions for steel
  • One radial pass

You can configure all the above parameters and much more in our Thread Milling Gcode Generator 


%
O101
(WWW.MACHININGDOCTOR.COM - THREADMILLING PROGRAM)
(CONTROLER - FANUC)
(THREAD - D=105 MM, P=2 MM, L=20 MM)
(APPLICATION - INTERNAL, RH THREAD, CLIMB MILLING)
(CUTTER - D=52.5 [SINGLE TOOTH])
N1 M06 T1
G54
G90 G40 G17 G94 G21
G00 X0 Y0 S606 M03
G43 H1 Z20.0 M08
(M-CODE "THROUGH COOLANT ON")
(PASS 1 / 1)
G90 G01 Z-20.25 F2000
G91 G01 G41 D1 X13.125 Y-13.125 F91
G03 X13.125 Y13.125 Z0.25 I0 J13.125 F23
G03 Z2.0 I-26.25 J0 F45
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 Z2.0 I-26.25 J0
G03 X-13.125 Y13.125 Z0.25 I-13.125 J0
G01 G40 X-13.125 Y-13.125 F2000
G90 G00 Z20.0
M30
(PLEASE NOTE THIS GCODE HAS NOT BEEN TESTED ON YOUR MACHINE AND SETUP. WE CANNOT GUARANTEE ITS ACCURACY OR COMPATIBILITY. NOTE THAT YOU ARE USING IT AT YOUR OWN RISK, AND WE SHALL NOT BE HELD LIABLE FOR ANY DAMAGES OR LOSSES ARISING FROM THE USE OF THIS PROGRAM.)
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