High-Precision Thread Gauges:
ACME Series
Master-grade thread plug and ring gauges crafted from premium Tungsten Carbide and Ceramics. Calibrated at 20℃ for aerospace, medical, and defense industries.
MISHUTE ACME Series Trapezoidal Thread Gauges: The Industrial Gold Standard for 29° Precision Testing
In high-torque power transmission and heavy-duty machinery, the integrity of a thread fit is non-negotiable. MISHUTE ACME Series Trapezoidal Thread Gauges are precision-engineered to meet the rigorous ANSI/ASME B1.5-1997 standards, providing the definitive verification for 29° thread profiles.
We eliminate the common industry pain points of rapid gauge wear and calibration instability. By utilizing premium alloys like GCr15 and SKD11 combined with advanced heat treatment, MISHUTE ensures your quality control process remains consistent over thousands of inspection cycles. Whether you are managing a global supply chain or overseeing a high-precision assembly line, MISHUTE delivers the reliability your brand demands.
Thread Gauges
Standard Material: GCr15
Optional Materials: SKD11, CrWMn, or other machinable materials
Material Hardness: 58–65 HRC
Common Tolerance Grades:
Grades: 2G, 3G, 4G
Technical Specifications
| Thread gauge designation | Threads/inch | Plug guage L | kg | D | GOL | Ring guage kg | D | NOT GOL | kg |
| 1/4 | 16 | 90 | 0.02 | 38 | 12 | 0.1 | 38 | 8 | 0.0.7 |
| 5/16 | 14 | ||||||||
| 3/8 | 12 | 96 | 0.03 | 16 | 0.13 | 10 | 0.08 | ||
| 7/16 | 12 | 105 | 0.04 | ||||||
| 1/2 | 10 | 0.05 | 24 | 0.19 | 14 | 0.11 | |||
| 5/8 | 8 | 140 | 0.11 | 45 | 32 | 0.28 | 45 | 18 | 0.16 |
| 3/4 | 6 | 154 | 0.18 | 0.32 | 0.19 | ||||
| 7/8 | 6 | 166 | 0.24 | 53 | 40 | 0.52 | 53 | 22 | 0.28 |
| 1 | 5 | 0.27 | 63 | 0.58 | 63 | 0.32 | |||
| 1 1/8 | 5 | 0.34 | 0.73 | 0.38 | |||||
| 1 1/4 | 5 | 182 | 0.46 | 50 | 0.77 | 28 | 0.41 | ||
| 1 3/8 | 4 | 202 | 0.66 | 73 | 0.82 | 73 | 0.45 | ||
| 1 1/2 | 4 | 212 | 0.87 | 0.89 | 0.47 | ||||
| 1 3/4 | 4 | 214 | 1.11 | 85 | 56 | 1.5 | 85 | 32 | 0.8 |
| 2 | 4 | 216 | 1.53 | 1.62 | 0.87 | ||||
| 21/4 | 3 | 246 | 2.05 | 100 | 70 | 1.81 | 100 | 40 | 0.95 |
| 2 1/2 | 3 | 246 | 2.95 | 19.6 | 1.01 | ||||
| 2 3/4 | 3 | 255 | 3.35 | 112 | 2.02 | 112 | 1.08 | ||
| 3 | 2 | 275 | 4.8 | 2.1 | 1.17 | ||||
| 31/2 | 2 | 280 | 6.2 | 140 | 2.28 | 140 | 1.26 | ||
| 4 | 2 | 280 | 8.11 | 160 | 85 | 2.6 | 160 | 55 | 1.45 |
| 4 1/2 | 2 | 301 | 8.35 | 180 | 90 | 2.68 | 180 | 65 | 1.52 |
| 5 | 2 | 330 | 8.76 | 2.82 | 1.69 |
3/4-0.1P-0.3LUNC-2B LH
UN: Thread designation (UN J: aviation-specific thread designation; UNS: ultra-fine pitch thread) 3/4: Nominal thread diameter
0.3L: Lead (lead/pitch for multi-start threads)
0.1P:
2B: Thread tolerance zone
LH: Left-hand thread (may be omitted for right-hand threads)
T/GO: Go end (can be fully engaged with the workpiece thread)
Z/NOGO: No-go end (cannot be fully engaged with the workpiece thread; engagement does not exceed 2 pitches)
TT: Go-Go (Engages fully with the go end of a new thread ring gauge)
TZ: Go-No-Go (Cannot fully engage with the go end of a new thread ring gauge; engagement does not exceed 1 pitch)
TS: No-Go (Cannot fully engage with the go end of a new thread ring gauge; engagement does not exceed 1 pitch)
ZT: No-Go-Go (Passes fully when screwed into the go end of a new thread ring gauge)
ZZ: Go-Stop (Fails to pass fully when screwed into the go end of a new thread ring gauge; engagement does not exceed 1 pitch)
ZS: Stop-Loss (Fails to pass fully when screwed into the go end of a new thread ring gauge; engagement does not exceed 1 pitch)
Single-MID Gauge: Refers to a gauge where the single mean diameter (MID) dimension of the thread is found to be within tolerance.
Single-parameter gauge: Refers to a thread where every parameter is compliant, including major diameter, mean diameter, minor diameter, pitch, half-angle and taper.
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.
Why Choose Us
Precision Guaranteed by Advanced Equipment
Extended Lifespan through Material Innovation
Global OEM & Export Experience
Applications
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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