Thread data sheet

Basic Thread Dimensions

Property mm Inch
Nominal Diameter 165 6.4961
Pitch (Distance) 6 0.2362
Pitch Diameter 161.103 6.3426
Minor Diameter 158.505 6.2404
Thread Height 3.248 0.1279
Addendum 1.949 0.0767
Crest (External)
Root (Internal)		 0.75 0.0295
Tap Drill Size
(75% depth)		 159.15 6.266
Lead Angle
(Single Start)		 0.68°
Thread Family Metric Fine Pitch (MF)
Relevant Standards ISO 68-1, ISO 9651-1, ISO 965-2, ISO 261,DIN 13
Equivalent InchThread6 - 4 4-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

M165 X 6Possible 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

M165 X 6 4g (External)

* Permisable values for thread Class 4g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 164.545 - 164.92 6.4781 - 6.4929
d2 Pitch Diameter 160.833 - 161.023 6.332 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.223 0.0295 - 0.0481
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 4h (External)

* Permisable values for thread Class 4h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 164.625 - 165 6.4813 - 6.4961
d2 Pitch Diameter 160.913 - 161.103 6.3352 - 6.3426
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.223 0.0295 - 0.0481
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 6e (External)

* Permisable values for thread Class 6e

# Description Value (mm) Value (Inch)
es Allowance 0.118 (Ref) 0.0046 (Ref)
d Major Diameter 164.282 - 164.882 6.4678 - 6.4914
d2 Pitch Diameter 160.685 - 160.985 6.3262 - 6.338
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.32 0.0295 - 0.052
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 6g (External)

* Permisable values for thread Class 6g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 164.32 - 164.92 6.4693 - 6.4929
d2 Pitch Diameter 160.723 - 161.023 6.3277 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.32 0.0295 - 0.052
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 6h (External)

* Permisable values for thread Class 6h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 164.4 - 165 6.4724 - 6.4961
d2 Pitch Diameter 160.803 - 161.103 6.3308 - 6.3426
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.32 0.0295 - 0.052
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 8e (External)

* Permisable values for thread Class 8e

# Description Value (mm) Value (Inch)
es Allowance 0.118 (Ref) 0.0046 (Ref)
d Major Diameter 163.932 - 164.882 6.454 - 6.4914
d2 Pitch Diameter 160.51 - 160.985 6.3193 - 6.338
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.453 0.0295 - 0.0572
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 8g (External)

* Permisable values for thread Class 8g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 163.97 - 164.92 6.4555 - 6.4929
d2 Pitch Diameter 160.548 - 161.023 6.3208 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.453 0.0295 - 0.0572
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 5g4g (External)

* Permisable values for thread Class 5g4g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 164.545 - 164.92 6.4781 - 6.4929
d2 Pitch Diameter 160.787 - 161.023 6.3302 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.265 0.0295 - 0.0498
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 5h4h (External)

* Permisable values for thread Class 5h4h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 164.625 - 165 6.4813 - 6.4961
d2 Pitch Diameter 160.867 - 161.103 6.3333 - 6.3426
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.265 0.0295 - 0.0498
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 5g6g (External)

* Permisable values for thread Class 5g6g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 164.32 - 164.92 6.4693 - 6.4929
d2 Pitch Diameter 160.787 - 161.023 6.3302 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.265 0.0295 - 0.0498
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 7g6g (External)

* Permisable values for thread Class 7g6g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 164.32 - 164.92 6.4693 - 6.4929
d2 Pitch Diameter 160.648 - 161.023 6.3247 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.379 0.0295 - 0.0543
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 7h6h (External)

* Permisable values for thread Class 7h6h

# Description Value (mm) Value (Inch)
es Allowance 0 (Ref) 0 (Ref)
d Major Diameter 164.4 - 165 6.4724 - 6.4961
d2 Pitch Diameter 160.728 - 161.103 6.3279 - 6.3426
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.379 0.0295 - 0.0543
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 7e6e (External)

* Permisable values for thread Class 7e6e

# Description Value (mm) Value (Inch)
es Allowance 0.118 (Ref) 0.0046 (Ref)
d Major Diameter 164.282 - 164.882 6.4678 - 6.4914
d2 Pitch Diameter 160.61 - 160.985 6.3232 - 6.338
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.379 0.0295 - 0.0543
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 9e8e (External)

* Permisable values for thread Class 9e8e

# Description Value (mm) Value (Inch)
es Allowance 0.118 (Ref) 0.0046 (Ref)
d Major Diameter 163.932 - 164.882 6.454 - 6.4914
d2 Pitch Diameter 160.385 - 160.985 6.3144 - 6.338
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.539 0.0295 - 0.0606
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 9g8g (External)

* Permisable values for thread Class 9g8g

# Description Value (mm) Value (Inch)
es Allowance 0.08 (Ref) 0.0031 (Ref)
d Major Diameter 163.97 - 164.92 6.4555 - 6.4929
d2 Pitch Diameter 160.423 - 161.023 6.3159 - 6.3395
R Root Radius 0.75 (Min) 0.0295 (Min)
C Root Truncation 0.75 - 1.539 0.0295 - 0.0606
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 4H (Internal)

* Permisable values for thread Class 4H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 158.505 - 159.005 6.2404 - 6.26
D2 Pitch Diameter 161.103 - 161.353 6.3426 - 6.3525
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 5H (Internal)

* Permisable values for thread Class 5H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 158.505 - 159.135 6.2404 - 6.2652
D2 Pitch Diameter 161.103 - 161.418 6.3426 - 6.355
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 5G (Internal)

* Permisable values for thread Class 5G

# Description Value (mm) VValue (Inch)
EL Allowance 0.08 (Ref) 0.0031 (Ref)
D1 Minor Diameter 158.585 - 159.215 6.2435 - 6.2683
D2 Pitch Diameter 161.183 - 161.498 6.3458 - 6.3582
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 6H (Internal)

* Permisable values for thread Class 6H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 158.505 - 159.305 6.2404 - 6.2719
D2 Pitch Diameter 161.103 - 161.503 6.3426 - 6.3584
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 6G (Internal)

* Permisable values for thread Class 6G

# Description Value (mm) VValue (Inch)
EL Allowance 0.08 (Ref) 0.0031 (Ref)
D1 Minor Diameter 158.585 - 159.385 6.2435 - 6.275
D2 Pitch Diameter 161.183 - 161.583 6.3458 - 6.3615
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 7H (Internal)

* Permisable values for thread Class 7H

# Description Value (mm) VValue (Inch)
EL Allowance 0 (Ref) 0 (Ref)
D1 Minor Diameter 158.505 - 159.505 6.2404 - 6.2797
D2 Pitch Diameter 161.103 - 161.603 6.3426 - 6.3623
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 7G (Internal)

* Permisable values for thread Class 7G

# Description Value (mm) VValue (Inch)
EL Allowance 0.08 (Ref) 0.0031 (Ref)
D1 Minor Diameter 158.585 - 159.585 6.2435 - 6.2829
D2 Pitch Diameter 161.183 - 161.683 6.3458 - 6.3655
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

M165 X 6 8G (Internal)

* Permisable values for thread Class 8G

# Description Value (mm) VValue (Inch)
EL Allowance 0.08 (Ref) 0.0031 (Ref)
D1 Minor Diameter 158.585 - 159.835 6.2435 - 6.2927
D2 Pitch Diameter 161.183 - 161.813 6.3458 - 6.3706
D Major Diameter 165 (Min) 6.4961 (Min)
LE Normal Length of Engagement 36 - 106 1.4173 - 4.1732

* Back to Thread Class Selection

Over Wire Measurements for M165 X 6


* 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 3.031 - 6.062 0.1193 - 0.2387
Ideal Wire Diameter 3.464 0.1364
Possible Wires
From Standard Sets		 * 3.175
* 3.464
* 4.042
* 4.619
* 5.196
* 5.774
 * 0.1283
* 0.1443
* 0.165
* 0.1777
* 0.1925
* 0.21

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 M165 X 6

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=165 MM, P=6 MM, L=60 MM)
(APPLICATION - EXTERNAL TURNING, TOWARDS CHUCK, RH TOOL, RH THREAD)
(FEED - 17 PASSES, FLANK, CONSTANT VOLUME)
(FINISH PASS - 0.056 MM)
(WITH CHAMFER -  NO)
G28 U0 W0
T0101 G99 G97 S193 M03
G00 Z10.0
X 175.0 M08
G76 P010060 Q56 R0.056
G76 X157.639 Z-60.0 P3681 Q879 F6.0 R0.00 
G28 U0 W0
M09
M30
%

CNC Gcode Program for Thread Milling of M165 X 6

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=165 MM, P=6 MM, L=60 MM)
(APPLICATION - INTERNAL, RH THREAD, CLIMB MILLING)
(CUTTER - D=82.5 [SINGLE TOOTH])
N1 M06 T1
G54
G90 G40 G17 G94 G21
G00 X0 Y0 S386 M03
G43 H1 Z20.0 M08
(M-CODE "THROUGH COOLANT ON")
(PASS 1 / 1)
G90 G01 Z-60.75 F2000
G91 G01 G41 D1 X20.625 Y-20.625 F58
G03 X20.625 Y20.625 Z0.75 I0 J20.625 F15
G03 Z6.0 I-41.25 J0 F29
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 Z6.0 I-41.25 J0
G03 X-20.625 Y20.625 Z0.75 I-20.625 J0
G01 G40 X-20.625 Y-20.625 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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