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Scheduled Maintenance Notice: This site will be unavailable due to scheduled maintenance from 9:00 9/2/2025 to 7:00 (SGT) 10/2/2025. We apologize for the inconvenience.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Please use the inquiry form.

NIIGATA SEIKI (SK) Plug Gauges / Screw Gauges（Nominal：M12）

6 items

: 30; 45; 60

Days to Ship	All 3 Day(s) or Less 4 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less 9 Day(s) or Less 10 Day(s) or Less 11 Day(s) or Less 12 Day(s) or Less

Thread Limit Plug Gauge (ISO-Compliant JIS Standard Specification) GPNP

NIIGATA SEIKI (SK)

Essential instrument for checking thread accuracy. Thread gauge enabling easy checking of thread accuracy on the GO and NOGO sides.
[Features]
· Testing using predetermined upper and lower limit dimensional accuracy of screw parts.
ISO system JIS standard specification.
· The conventional JIS standard classifies NOGO sides into "for testing" and "for manufacturing", but the ISO-compliant JIS standard is simplified, without classification.
· The screw thread is judged to have passed if the GO gauge goes through without any difficulties and the NOGO gauge does not thread more than 2 complete revolutions.
· With inspection report
[Applications]
· For screw thread inspection.

Standard Price:	SGD 181.46
Days to Ship:	5 Day(s) or more

Screw Pin Gauge RA

NIIGATA SEIKI (SK)

An extremely useful screw gauge for those times when it is not possible to measure using a conventional screw pin gauge.
[Features]
· Thread changes to 1/15 taper thread in the middle so that the unit can be fixed on a workpiece with a taper screw.
· Can be used for measurements where chamfering of the screw hole is not possible, or where the screw hole is angled against workpiece surface, etc.
· Also ideal for deburring.
[Applications]
· Used for measuring between screw hole centers or for positioning screw holes.

Standard Price:	SGD 89.36-
Days to Ship:	11 Day(s)

Limit Screw Plug Set for Testing

NIIGATA SEIKI (SK)

Essential product for checking thread precision. Screw gauge enabling easy checking of screw accuracy on the Go and No Go sides.
[Features]
· Inspects the upper limit and lower limit of the predetermined dimension accuracy of the screw part.
· Machining (GPWP) and ISO system specifications can also be manufactured.
[Applications]
· Used for inspecting screws.
· The gauge classifications for screw limit gauge are determined with the same grades as the screws to be measured.
· If the gauge GO side is passed through comfortably and the NO GO side does not screw in two turns or more, then the screw is judged to have passed.

Standard Price:	SGD 168.92-
Days to Ship:	7 Day(s) or more

Limit Screw Ring Set for Testing

NIIGATA SEIKI (SK)

Essential product for checking thread precision. Screw gauge enabling easy checking of screw accuracy on the Go and No Go sides.
[Features]
· Inspects the upper limit and lower limit of the predetermined dimension accuracy of the screw part.
· Machining (GRWR) and ISO system specifications can also be manufactured.
· The gauge classifications for screw limit gauge are determined with the same grades as the screws to be measured.
· If the gauge GO side is passed through comfortably and the NO GO side does not screw in two turns or more, then the screw is judged to have passed.
[Applications]
· Used for inspecting screws.

Standard Price:	SGD 335.49-
Days to Ship:	5 Day(s) or more

Thread Limit Plug Gauge, Conventional JIS For Manufacturing (GPWP)

NIIGATA SEIKI (SK)

Essential instrument for checking thread accuracy. Thread gauge enabling easy checking of thread accuracy on the GO and NOGO sides.
[Features]
· Testing using predetermined upper and lower limit dimensional accuracy of screw parts.
Conventional JIS standard class 2 gauge for manufacturing.
· The screw thread is judged to have passed if the GO gauge goes through without any difficulties and the NOGO gauge does not thread more than 2 complete revolutions.
· With inspection report
[Applications]
· For screw thread inspection.

Standard Price:	SGD 172.21-
Days to Ship:	8 Day(s) or more

Screw Pin Gauge

NIIGATA SEIKI (SK)

A thread pin gauge capable of simple and highly accurate measurement.
[Features]
· Quickly attachable and detachable using simple tools.
· Centering female screw holes is easier, and pitches between cores can also be easily measured by using two units.
· Can be used for screw hole origin reference.
· Made of rust-resistant stainless steel.
· High-precision measurements are possible thanks to support at the taper part.
· Cheaper, quicker, and more accurate measurement than with conventional types.
[Applications]
· Used for measuring between screw hole centers or for using a screw hole as an origin reference.

Standard Price:	SGD 64.12
Days to Ship:	11 Day(s)


Brand
Product Series
Days to Ship
Product Type
Nominal
Pitch P
Workpiece
Class
Standard


Brand	NIIGATA SEIKI (SK)	NIIGATA SEIKI (SK)	NIIGATA SEIKI (SK)	NIIGATA SEIKI (SK)	NIIGATA SEIKI (SK)	NIIGATA SEIKI (SK)
Product Series	Thread Limit Plug Gauge (ISO-Compliant JIS Standard Specification) GPNP	Screw Pin Gauge RA	Limit Screw Plug Set for Testing	Limit Screw Ring Set for Testing	Thread Limit Plug Gauge, Conventional JIS For Manufacturing (GPWP)	Screw Pin Gauge
Days to Ship	5 Day(s) or more	11 Day(s)	7 Day(s) or more	5 Day(s) or more	8 Day(s) or more	11 Day(s)
Product Type	Thread Plug Gauge	Thread Pin Gauge	Thread Plug Gauge	Thread ring gauge	Thread Plug Gauge	Thread Pin Gauge
Nominal	M12	M12	M12	M12	M12	M12
Pitch P	1.75	1.5 ～ 1.75	1 ～ 1.75	1 ～ 1.75	1 ～ 1.75	1 ～ 1.75
Workpiece	Female Thread	-	Male thread	Female Thread	Female Thread	-
Class	6H	-	-	-	Class 2	-
Standard	JIS Standard	-	-	-	JIS Standard	-

Configure

Specification/Dimensions

Product Type
- Thread ring gauge
- Thread Plug Gauge
- Limit Plug Gauge
- Thread Pin Gauge
Clear

Nominal
NO0-80UNF

0.073-Inch models

0.086-Inch models

0.099-Inch models

NO.10

No.10-32UNF

No.10-24UNC

0.112-Inch models

0.1155

NO.12

No.12-28UNF

No.12-24UNC

0.125-Inch models

0.138-Inch models

0.164-Inch models

0.19-Inch models

0.216-Inch models

0.25-Inch models

0.3125-Inch models

0.375-Inch models

NO.4

No.4-40UNC

0.4375-Inch models

0.5-Inch models

NO.5

No.5-40UNC

0.5625-Inch models

NO.6

No.6-40UNF

No.6-32UNC

0.625-Inch models

0.6875-Inch models

NO.8

No.8-36UNF

No.8-32UNC

0.875-Inch models

1

1-Inch models

1

1 inch

M1

NO1-72UNF

NO1-64UNC

1-14UNS

1-12UNF

G1-11

PF1-11

PS1-11

PT1-11

R1-11

1-11-1/2NPT

1-11-1/2NPTF

1-8UNC

W1-8

W1-8-L

W1-7/8-4-1/2

1-5/8-8UN

W1-5/8-5

1-5/16-12UN

PF1-3/4-11

PS1-3/4-11

PT1-3/4-11

1-3/4-8UN

1-3/4-5UNC

W1-3/4-5

1-3/8-12UNF

1-3/8-8UN

1-3/8-6UNC

W1-3/8-6

1-3/16-12UN

1-1/2-12UNF

G1-1/2-11

PF1-1/2-11

PS1-1/2-11

PT1-1/2-11

R1-1/2-11

1-1/2-11-1/2NPT

1-1/2-11-1/2NPTF

1-1/2-8UN

1-1/2-6UNC

W1-1/2-6

1-1/4-12UNF

G1-1/4-11

PF1-1/4-11

PS1-1/4-11

PT1-1/4-11

R1-1/4-11

1-1/4-11-1/2NPT

1-1/4-11-1/2NPTF

1-1/4-8UN

1-1/4-7UNC

W1-1/4-7

1-1/8-12UNF

PF1-1/8-11

PS1-1/8-11

1-1/8-8UN

1-1/8-7UNC

W1-1/8-7

1-1/16-12UN

M1X0.2

M1X0.25

1 1/2

1 1/4

1 1/8

1/2

1/2-32UN

1/2-20UNF

1/2-14NPT

1/2-14NPTF

G1/2-14

PF1/2-14

PS1/2-14

PT1/2-14

R1/2-14

1/2-13UNC

W1/2-12

W1/2-12-L

1 3/4

1/4

SM1/4-40

1/4-32UNEF

1/4-28UNF

1/4-20UNC

W1/4-20

W1/4-20-L

G1/4-19

PF1/4-19

PS1/4-19

PT1/4-19

R1/4-19

1/4-18NPT

1/4-18NPTF

1/8

SM1/8-44

SM1/8-40

W1/8-40

G1/8-28

PF1/8-28

PS1/8-28

PT1/8-28

R1/8-28

1/8-27NPT

1/8-27NPTF

W1/16-60

PT1/16-28

R1/16-28

1/16-27NPT

1/16-27NPTF

M1.1X0.2

M1.1X0.25

1.125-Inch models

M1.2X0.2

M1.2X0.25

1.25-Inch models

1.375-Inch models

1.4

M1.4

M1.4X0.2

M1.4X0.3

M1.4X0.3-L

1.5-Inch models

1.5 inches

1.6

M1.6X0.2

M1.6X0.35

1.7

M1.7X0.2

M1.7X0.35

M1.7X0.35-L

1.75-Inch models

1.8

M1.8X0.2

M1.8X0.35

2

2

2 inches

M2

NO2-64UNF

NO2-56UNC

G2-11

PF2-11

PS2-11

PT2-11

R2-11

2-11-1/2NPT

2-11-1/2NPTF

2-8UN

2-4-1/2UNC

W2-4-1/2

PF2-1/2-11

PS2-1/2-11

PT2-1/2-11

2-1/2-8NPT

2-1/2-8UN

PF2-1/4-11

PS2-1/4-11

M2X0.25

M2X0.4

M2X0.4-L

2 1/2

2 1/4

2 3/4

2.2

M2.2X0.25

M2.2X0.45

2.3

M2.3

M2.3X0.25

M2.3X0.4

2.5

M2.5

M2.5X0.35

M2.5X0.45

M2.5X0.45-L

2.6

M2.6

M2.6X0.35

M2.6X0.45

M2.6X0.45-L

3

3

M3

φ3

NO3-56UNF

NO3-48UNC

PF3-11

PS3-11

PT3-11

3-8NPT

3-8UN

PF3-1/2-11

PT3-1/2-11

3-1/2-8NPT

3-1/2-8UN

M3X0.35

M3X0.5

M3X0.5-L

M3X0.6

M3X0.6-L

3 1/2

3/4

3/4-16UNF

3/4-14NPT

3/4-14NPTF

G3/4-14

PF3/4-14

PS3/4-14

PT3/4-14

R3/4-14

3/4-10UNC

W3/4-10

W3/4-10-L

3/8

3/8-32UNEF

3/8-24UNF

G3/8-19

PF3/8-19

PS3/8-19

PT3/8-19

R3/8-19

3/8-18NPT

3/8-18NPTF

3/8-16UNC

W3/8-16

W3/8-16-L

SM3/16-32

SM3/16-28

W3/16-24

SM3/32-56

3.5

M3.5

M3.5X0.35

M3.5X0.6

4

4

M4

φ4

NO4-48UNF

NO4-40UNC

PF4-11

PT4-11

4-8NPT

4-8UN

4-3/4-8UN

4-1/2-8UN

M4X0.5

M4X0.7

M4X0.7-L

M4X0.75

M4X0.75-L

4.5

M4.5X0.5

M4.5X0.75

5

5

M5

φ5

NO5-44UNF

NO5-40UNC

PT5-11

M5X0.5

M5X0.75

M5X0.8

M5X0.8-L

M5X0.9

M5X0.9-L

5/8

5/8-24UNEF

5/8-18UNF

G5/8-14

PF5/8-14

PS5/8-14

PT5/8-14

5/8-11UNC

W5/8-11

W5/8-11-L

5/16-32UNEF

5/16-24UNF

5/16-18UNC

W5/16-18

W5/16-18-L

5.5

M5.5X0.5

M5.5X0.75

M5.5X0.9

6

6

M6

φ6

NO6-40UNF

NO6-32UNC

M6X0.5

M6X0.75

M6X1

M6X1.0

M6X1-L

7

7

M7

φ7

M7X0.5

M7X0.75

M7X1

M7X1-L

7/8

7/8-14UNF

G7/8-14

PF7/8-14

PS7/8-14

PT7/8-14

7/8-9UNC

W7/8-9

W7/8-9-L

7/16-20UNF

7/16-14UNC

W7/16-14

8

8

M8

φ8

NO8-36UNF

NO8-32UNC

M8X0.5

M8X0.75

M8X1

M8X1.25

M8X1.25-L

9

9

φ9

M9X0.5

M9X0.75

M9X1

M9X1.25

M9X1.25-L

9/16-18UNF

9/16-12UNC

W9/16-12

SM9/64-40

10

M10

φ10

NO10-32UNF

NO10-24UNC

M10X0.5

M10X0.75

M10X1

M10X1.25

M10X1.25-L

M10X1.5

M10X1.5-L

11

φ11

M11X0.5

M11X0.75

M11X1

M11X1.25

M11X1.5

M11X1.5-L

SM11/64-40

12

M12

φ12

NO12-28UNF

NO12-24UNC

M12X0.5

M12X0.75

M12X1

M12X1.25

M12X1.25-L

M12X1.5

M12X1.5-L

M12X1.75

M12X1.75-L

13

φ13

M13X0.5

M13X0.75

M13X1

M13X1.25

M13X1.5

M13X1.75

14

M14

φ14

M14X0.5

M14X0.75

M14X1

M14X1.25

M14X1.25-L

M14X1.5

M14X1.5-L

M14X2

M14X2-L

15

φ15

M15X0.5

M15X0.75

M15X1

M15X1.5

M15X2

SM15/64-28

16

M16

φ16

M16X0.5

M16X0.75

M16X1

M16X1.25

M16X1.5

M16X1.5-L

M16X2

M16X2-L

17

φ17

M17X0.75

M17X1

M17X1.5

18

M18

φ18

M18X0.5

M18X0.75

M18X1

M18X1.5

M18X1.5-L

M18X2

M18X2.5

M18X2.5-L

19

φ19

M19X1

M19X1.5

M19X2.5

20

M20

φ20

M20X0.5

M20X1

M20X1.25

M20X1.5

M20X1.5-L

M20X2

M20X2.5

M20X2.5-L

21

φ21

22

M22

φ22

M22X0.5

M22X1

M22X1.5

M22X1.5-L

M22X2

M22X2.5

M22X2.5-L

23

φ23

24

M24

φ24

M24X0.5

M24X1

M24X1.5

M24X1.5-L

M24X2

M24X3

M24X3-L

25

φ25

M25X0.5

M25X1

M25X1.5

M25X2

26

φ26

M26X0.5

M26X1

M26X1.5

M26X1.5-L

M26X2

M26X3

27

M27

φ 27

M27X1

M27X1.5

M27X1.5-L

M27X2

M27X3

M27X3-L

28

φ28

M28X0.5

M28X1

M28X1.25

M28X1.5

M28X1.5-L

M28X2

M28X3

29

φ29

30

M30

φ30

M30X0.5

M30X1

M30X1.5

M30X1.5-L

M30X2

M30X3

M30X3.5

M30X3.5-L

31

φ 31

32

φ32

M32X0.5

M32X1

M32X1.5

M32X2

M32X3

33

M33

φ33

M33X1.5

M33X2

M33X3

M33X3.5

34

φ34

M34X0.5

M34X1

M34X1.5

M34X2

35

φ35

M35X1.5

M35X3

36

M36

φ 36

M36X0.5

M36X1

M36X1.5

M36X2

M36X3

M36X4

37

φ37

38

φ38

M38X0.5

M38X1

M38X1.5

M38X2

M38X3

39

M39

φ39

M39X1.5

M39X2

M39X3

M39X4

40

φ40

M40X1

M40X1.5

M40X2

M40X3

41

42

M42

M42X1

M42X1.5

M42X2

M42X3

M42X4

M42X4.5

43

44

45

M45X1

M45X1.5

M45X2

M45X3

M45X4

M45X4.5

46

M46X1.5

47

48

M48X1

M48X1.5

M48X2

M48X3

M48X4

M48X5

49

50

M50X1

M50X1.5

M50X2

M50X3

52

M52X1.5

M52X2

M52X3

M52X4

M52X5

M54X4

55

M55X1.5

M55X2

M55X3

M55X4

56

M56X1.5

M56X2

M56X3

M56X4

M56X5.5

58

M58X1.5

M58X2

M58X3

M58X4

60

M60X1.5

M60X2

M60X3

M60X4

M60X5.5

M62X1.5

M62X2

M62X3

M62X4

M64X1.5

M64X2

M64X3

M64X4

M64X6

M65X1.5

M65X2

M65X3

M65X4

M68X1.5

M68X2

M68X3

M68X4

M68X6

M70X1.5

M70X2

M70X3

M70X4

M70X6

M72X1.5

M72X2

M72X3

M72X4

M72X6

M75X1.5

M75X2

M75X3

M75X4

M76X1.5

M76X2

M76X3

M76X4

M76X6

M78X2

M80X1.5

M80X2

M80X3

M80X6

M82X2

M85X1.5

M85X2

M85X3

M85X4

M90X1.5

M90X2

M90X3

M90X4

M90X6

M95X1.5

M95X2

M95X3

M95X4

M95X6

M100X1.5

M100X2

M100X3

M100X4

M100X6

M105X2

M105X6

M110X2

M110X3

M115X2

M115X4

M120X2

M120X3

M125X2

M125X4

M130X2

M130X3

M130X6
Clear

Pitch P
0.2

0.25

0.3

0.35

0.4

0.45

0.5

0.6

0.7

0.75

0.8

0.9

1

1.25

1.5

1.75

2

2.5

3

3.5

4

4.5

Ridge 4.5

5

Ridge 5

5.5

6

Ridge 6

Ridge 7

Ridge 8

Ridge 9

Ridge 10

11

Ridge 11

Ridge 11 1/2

Ridge 12

Ridge 13

14

Ridge 14

Ridge 16

Ridge 18

19

Ridge 19

Ridge 20

Ridge 24

Ridge 27

28

Ridge 28

Ridge 32

Ridge 36

Ridge 40

Ridge 44

Ridge 48

Ridge 56

Ridge 64

Ridge 72
Clear

Workpiece
- Male thread
- Female Thread
- Female Thread/Male Screw Set
Clear

Class
2

2A

2B

Class 2

Equivalent to Former JIS2 Grade

For JIS Grade 2 Screw

6H

6g

6h

H7

A

A/B Common

B
Clear

Standard
- JIS Standard
- Other
Clear

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NIIGATA SEIKI (SK) Plug Gauges / Screw Gauges（Nominal：M12）

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Specification/Dimensions

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Pitch P

Workpiece

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Standard

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