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Eisen Limited Thread Gauge SPO series

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Eisen Limited Thread Gauge SPO series

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SPO Series

 

One-way Thread Gauge 2→1

Explanation about series

This gauge make operating efficiency improve from the double measurement to just once!

SPO Series
 

The one-way thread gauge make operational efficiency improve with just one measurement as opposed to an existing plug gauge must take a double measurement (Go / Not-Go).
A passing grade is that the GO-side thread plug gauge section can be easily inserted in a tapped hole and it stops up to the end face of the gauge stopper.
Can privent an inspection error, because the go side gauge is guide.


Features

  • A removable hexagonal aluminum handle is attached.
  • The handle section uses a left-thread configuration to prevent over tightening.
  • The gauge material is Gauge steel (SKS3, HRC58 or harder), and the gauge has exceptional wear resintance.
  • An inspection report for the thread gauge is included with to provide confidence and assurance for users!
 

How to Use

A passing evaluation is that the GO-side thread plug gauge section can be easily inserted in a tapped hole and stop up to the end face of the gauge stopper.

 

 

 

One-way Thread Gauge 2→1 SPO series

Notation Example

 
 
 
 

Type
of thread
Pitch
P
Thread
L1
Stopper
L2
Stopper
φD
Full length
L3
Hexagonal handle
H
Gauge type Class
M1.4 0.3 coarse 3 6.5 4 30 10 GPIP
(for JIS inspection)


GPWP
(for JIS work)





GPNP
(ISO)

(JIS class)







6H
(ISO class)
※M1.4[5H]
M1.6 0.35 coarse 3.5 6
M1.7 0.35 coarse
M1.8 0.35 coarse
M2 0.4 coarse 4 7 7
M2.3 0.4 coarse
M2.5 0.45 coarse 4.5 6.5
M2.6 0.45 coarse
M3 0.5 coarse 5 6
M4 0.7 coarse 7 9 8 40
M5 0.8 coarse 8 8
M6 1.0 coarse 10 9 10
M7 1.0 coarse
M8 1.25 coarse 12.5 10 12
M8 1.0 fine 10 12.5
M10 1.5 coarse 15 11 14 12
M10 1.25 fine 12.5 13.5
M10 1.0 fine 10 16
M12 1.75 coarse 17.5 11.5 16
M12 1.5 fine 15 14
M12 1.25 fine 12.5 16.5
M14 2.0 coarse 20 12 18 17
M14 1.5 fine 15 17
M16 2.0 coarse 20 12 20
M16 1.5 fine 15 17
M18 2.5 coarse 25 13 22
M18 1.5 fine 15 23
M20 2.5 coarse 25 13 24
M20 1.5 fine 15 23
  • ※Other specifications are available (effective diameter can be changed for fine, extra-fine, unified, and pre-plating sections).

 

 

Custom One-Way Thread Gauges

Notation Example

 
 
 
 

Type
of thread
Pitch
P
Gauge Length
K
(0.1mmStep)
Thread
L1
Stopper
L2
Stopper
φD
Full length
L3
Hexagonal handle
H
Gauge type Class
M1.4 0.3 coarse 1.2 ~5.0 K+3P 6.5 4 30 10 GPIP
(for JIS inspection)


GPWP
(for JIS work)





GPNP
(ISO)

(JIS class)







6H
(ISO class)
※M1.4[5H]
M1.6 0.35 coarse 1.4 ~5.0 6
M1.7 0.35 coarse 1.4 ~5.0
M1.8 0.35 coarse 1.4 ~5.0
M2 0.4 coarse 1.6 ~7.0 7 7
M2.3 0.4 coarse 1.6 ~7.0
M2.5 0.45 coarse 1.8 ~9.0 6.5
M2.6 0.45 coarse 1.8 ~9.0
M3 0.5 coarse 2.0 ~9.0 6
M4 0.7 coarse 2.8 ~12.5 9 8 40
M5 0.8 coarse 3.2 ~12.5 8
M6 1.0 coarse 4.0 ~17.5 9 10
M7 1.0 coarse 4.0 ~17.5
M8 1.25 coarse 5.0 ~20.0 10 12
M8 1.0 fine 4.0 ~20.0 12.5
M10 1.5 coarse 6.0 ~25.0 11 14 12
M10 1.25 fine 5.0 ~25.0 13.5
M10 1.0 fine 4.0 ~25.0 16
M12 1.75 coarse 7.0 ~30.0 11.5 16
M12 1.5 fine 6.0 ~30.0 14
M12 1.25 fine 5.0 ~30.0 16.5
M14 2.0 coarse 8.0 ~32.0 12 18 17
M14 1.5 fine 6.0 ~32.0 17
M16 2.0 coarse 8.0 ~32.0 12 20
M16 1.5 fine 6.0 ~32.0 17
M18 2.5 coarse 10.0 ~36.0 13 22
M18 1.5 fine 6.0 ~36.0 23
M20 2.5 coarse 10.0 ~40.0 13 24
M20 1.5 fine 6.0 ~40.0 23
  • ※Other specifications are available (effective diameter can be changed for fine, extra-fine, unified, and pre-plating sections).

 

 

Special Configurations

Measurement of threaded hole coaxiality (alignment)

 

Measurement of threaded hole and tapped hole

 

Measurement of helical (planet) tap machining allowance

 

 

 

Calibration Process

Not-go side section is only 2 pitch, but removing the stopper make calibration as standard thread gauges.
Removing the stopper does not need an exculsive tool.

 

1.Remove the stopper.
2.Measure the go side.
3.Measure the Not-go side
4.Set the stopper


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