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1.125-20UNJS-3A Thread Ring Gauge

1.125-20UNJS-3A Thread Ring Gauge made in China, price is very cheap, all thread ring gage made CNC thread grinding machine, all parameter of thread ring gages in tolerance.
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1.125-20UNJS-3A Thread Ring Gauge made in China, price is very cheap, all thread ring gage made CNC thread grinding machine, all parameter of thread ring gages in tolerance.

 1.125-20UNJS-3A Thread Ring Gauge made by Sowant Precision Gage

The 1.125-20UNJS-3A Thread Ring Gauge is a specialized tool designed for inspecting external UNJ-series threads, which are widely used in aerospace and high-precision mechanical systems due to their enhanced fatigue resistance and controlled root radius. This gauge adheres to the ASME B1.15 standard for UNJ threads, ensuring compliance with critical dimensional tolerances and thread form accuracy.

Key Specifications of 1.125-20UNJS-3A:

  • Nominal Diameter: 1.125 inches

  • Threads Per Inch (TPI): 20

  • Tolerance Class: 3A (tight fit for external threads, minimal allowance)

  • Material: Cr15 bearing steel (hardness HRC 58-60), offering exceptional wear resistance and longevity.

  • Root Radius: Unique UNJ design with a controlled root radius to reduce stress concentration in threaded components.

  • Applications: Aerospace fasteners, defense equipment, and high-stress mechanical assemblies requiring fatigue-resistant threads.

Sowant Precision Gage: Expertise in UNJ Thread Gauges

Sowant Precision Gage specializes in manufacturing custom UNJ-series thread ring/plug gauges with rapid turnaround and competitive pricing:

  1. Advanced Manufacturing: All gauges are produced using CNC thread-grinding machines, ensuring pitch diameter accuracy within ±0.002 mm and compliance with ASME/BS EN standards.

  2. Short Lead Time: Delivery within 3–4 weeks, even for non-standard specifications.

  3. Material Quality: Cr15 bearing steel with chrome plating for corrosion resistance and extended service life.

  4. Quality Assurance: Gauges are calibrated using master setting plugs (TT/ZT gauges) and NIST-traceable systems.

20 UNJ Thread Ring Gauge Models (Nominal Diameter ≈1.5 inches, 3A Tolerance)

Below is a curated list of China made UNJ-series thread ring gauges suitable for aerospace and precision engineering applications:

  1. China made UNJ-series thread ring gauges 1.5-20UNJS-3A

  2. China made UNJ-series thread ring gauges 1.625-18UNJS-3A

  3. China made UNJ-series thread ring gauges 1.75-16UNJS-3A

  4. China made UNJ-series thread ring gauges 1.875-14UNJS-3A

  5. China made UNJ-series thread ring gauges 2.0-12UNJS-3A

  6. China made UNJ-series thread ring gauges 1.25-20UNJS-3A

  7. China made UNJ-series thread ring gauges 1.375-18UNJS-3A

  8. China made UNJ-series thread ring gauges 1.9375-16UNJS-3A

  9. China made UNJ-series thread ring gauges 2.125-14UNJS-3A

  10. China made UNJ-series thread ring gauges 2.25-12UNJS-3A

  11. China made UNJ-series thread ring gauges 1.5625-20UNJS-3A

  12. China made UNJ-series thread ring gauges 1.6875-16UNJS-3A

  13. China made UNJ-series thread ring gauges 1.8125-14UNJS-3A

  14. China made UNJ-series thread ring gauges 2.0625-12UNJS-3A

  15. China made UNJ-series thread ring gauges 2.375-10UNJS-3A

  16. sowant is the best of China made UNJ-series thread ring gauges 1.4375-20UNJS-3A

  17. do you know the manufacture of China made UNJ-series thread ring gauges 1.718-18UNJS-3A?

  18. the lead time of China made UNJ-series thread ring gauges 1.999-16UNJS-3A is how? 3-4 weeks?

  19. where can buy China made UNJ-series thread ring gauges 2.3125-14UNJS-3A

  20. China made UNJ-series thread ring gauges 2.5-12UNJS-3A,unit price is how much?

Gagemaker Products Distributed by Sowant Precision Gage

Sowant also resell Gagemaker, a leading U.S.-brand specializing in precision measurement instruments. Below are 40+ Gagemaker models across multiple categories:

1. Thread Pitch and Minor Diameter Instruments

  • Pitch Diameter Gauges: PD-6000, PD-8001, PD-6001,PD-8002,PD-8004,PD-8006,PD-8008

  • Thread Plug Gauges: PG-6000, PG-7000.

  • Thread Ring Gauges: RG-7000, RG-5000.

2. Thread Lead and Angle Measurement Systems

  • Lead Checking Gauges: LG-5002, LG-3000.

  • Angle Comparators: TH-3000, TH-2500.

3. Thread Height and Form Instruments

  • Height Micrometers: MRP-5500, MRP-5000, MRP-25007.

  • Form Testers: BX-1000, BXG-1000.

4. Calibration and Length Measurement Systems

  • MIC TRAC™ Bench Centers:

    • MT-3012-50 (0–12", ±0.0001")

    • MT-3024F-50 (0–24", ±0.0002" with Force-Lok™)310.

    • MT-3048-10 (0–48", ±0.00023")10.

  • Calibration Kits: CAL-PAK, TF-1F blocks5.

5. Specialty Gauges for Oil and Gas

  • API Thread Gauges: NC, REG, BCSG, LTC (for API SPEC 7-1 connections).

  • Taper Pipe Gauges: NPT, BSPT.

6. Software and Accessories

  • CERTIFI™ Calibration Software: For automated gauge certification.

  • TDWin™ Thread Engineering Software: Supports UNJ, ACME, and metric threads.

Quality Assurance and Industry Applications

Sowant’s gauges and Gagemaker instruments are critical for:

  • Aerospace: Validating UNJ threads per BS EN 6029-2017.

  • Oil and Gas: Calibrating API-spec threads for drill pipes and casings.

  • Automotive: Ensuring fastener compliance in high-torque assemblies.

For custom orders or technical specifications, contact Sowant Precision Gage at sales@labst.comor visit www.swttool.com.

Sources: ASME B1.15, BS EN 6029-2017, and Gagemaker technical documentation.