High-Precision NPSM Thread Gauges:

Master-grade thread plug and ring gauges crafted from premium Tungsten Carbide and Ceramics. Calibrated at 20℃ for aerospace, medical, and defense industries.

MISHUTE Precision NPSM Thread Gauges: ANSI/B1.20.1-2013 Certified for Superior Mechanical Pipe Fitting Accuracy

In the world of mechanical assembly and free-fitting pipe connections, even a micron-level deviation in thread accuracy can lead to catastrophic assembly failures, fluid leakage, or costly downtime. NPSM Thread Gauges is critical for ensuring that internal and external threads mate perfectly without the need for a pressure-tight seal on the threads themselves.

At MISHUTE, we understand that a gauge is more than just a tool—it is the gatekeeper of your quality reputation. Our NPSM Thread Gauges are engineered to solve the common industry pain points of rapid wear, inconsistent calibration, and non-compliance with international standards. By utilizing premium materials and rigorous heat treatment processes, we provide the ultimate verification solution for your high-precision mechanical piping projects.

NPSM Thread Gauges

Thread Gauges

Standard Material: GCr15
Optional Materials:
SKD11, CrWMn, or other machinable materials
Material Hardness: 58–65 HRC
Common Tolerance Grades:
Grade: 2B、2A

Thread guage code

threads/inch

Plugguage

Ringguage

GO

NOTGO

L

kg

L

D

kg

L

D

kg

1/8

27

86

0.02

32

8

0.05

32

5

0.03

1/4

18

99

0.04

38

12

0.1

38

8

3/8

112

0.07

45

0.14

45

0.07

1/2

14

132

0.14

16

0.18

12

0.1

3/4

136

0.2

63

0.35

63

0.19

1

 

11.5

156

0.37

71

20

0.49

71

 

 

 

 

16

0.25

11/4

160

0.53

85

0.67

85

0.4

11/2

0.65

0.68

0.59

2

 

176

1.04

100

0.89

100

0.77

21/2

 

8

1.64

125

1.37

125

0.9

3

2.11

140

1.62

140

1.18

31/2

2.64

160

2.12

160

1.3

Core Advantages & Inspection Capabilities

Extreme Wear Resistance (58-65 HRC)

MISHUTE utilizes premium GCr15 bearing steel as standard, with optional high-performance alloys like SKD11 and CrWMn. Our proprietary heat treatment process achieves a hardness of 58-65 HRC, ensuring the gauge maintains its dimensional stability over thousands of inspection cycles, lowering your total cost of ownership.

Comprehensive Tolerance Coverage for Global Markets

From ultra-tight 4h/4H tolerances for precision instruments to standard 6g/6H and 8g/8H fits, MISHUTE offers the full spectrum of metric classifications. This versatility ensures that your products meet the specific fit requirements of any global region or technical specification.

Advanced Metrology Verification

To ensure every MISHUTE gauge is "Zero-Defect," we employ dual-verification methods. We utilize the traditional "Three-Wire Method" with high-precision micrometers alongside state-of-the-art Integrated Thread Scanners—the preferred method of national metrology institutes—to guarantee the accuracy of every flank angle and pitch.

Bespoke OEM/ODM Customization

MISHUTE understands that B2B clients often have unique requirements. We offer 360° customization services including specialized dimensions, alternative materials, custom branding/marking, and protective packaging tailored to your brand’s distribution needs.

pin gauge manufacturer

Why Choose Us

Precision Guaranteed by Advanced Equipment

We use top-tier German and Swiss measuring systems to ensure that every micron meets your specifications.

Extended Lifespan through Material Innovation

Our Zirconia Ceramic and Tungsten Carbide gauges significantly lower your Total Cost of Ownership (TCO) by reducing replacement frequency.

Global OEM & Export Experience

Serving markets in North America and Europe, we understand international standards and the rigorous demands of global supply chains.
Where Precision Matters

Industry Applications

Our precision measuring tools serve critical quality control across automotive, medical, new energy, electronics and other high-tech industries.

Automotive

Precision gauges help automotive manufacturers verify critical dimensions, bores, shafts, and threads, supporting high-volume production, assembly accuracy, and quality consistency.

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Medical

Precision gauges support the inspection of critical dimensions in medical components and instruments, helping manufacturers maintain accuracy, consistency, and reliable quality control.

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New Energy

Precision gauges support dimensional inspection of components used in batteries, electric vehicles, and energy systems, helping maintain accuracy, consistency, and production quality.

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Electronics

Precision gauges enable reliable inspection of small holes, shafts, and critical dimensions in semiconductor components, supporting tight tolerances and consistent manufacturing.

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Aerospace

Precision gauges help verify critical dimensions, holes, shafts, and threads in aerospace components, supporting tight tolerances, reliable assembly, and stringent quality control.

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Machine Tooling

Precision gauges help machining manufacturers verify bore, shaft, thread, and critical dimensions, supporting accurate production, process control, and consistent quality.

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FAQ

Calibration frequency depends on the material and usage volume. Our Carbide gauges typically last 5-10 times longer between calibrations compared to steel.

Yes, every gauge includes a factory inspection report. Traceable third-party certification is also available.

We specialize in bespoke orders for special diameters, pitches, and thread profiles like ACME or Buttress.

While Ceramic is brittle compared to steel, our Zirconia (ZrO2) is highly toughened to withstand industrial use while providing unmatched corrosion resistance

WE ARE HAPPY TO SOLVE PROBLEMS FOR CUSTOMERS

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