RELIABLE PERFORMANCE

넳 넲
OSG-005
OSG-004
OSG-003
OSG-002
넳 넲

PT 3/4 JIS

PT 3/4  JIS made by OGS in Japan. Sowant can offer you OSG thread gages in 2-3 weeks
ꄴPrevious： 293-100-20
ꄲNext： Fischer FMP10

 

 

Introduction to Japanese OGS Thread Gauges and JIS PT Thread Ring Gauges

Japanese OGS thread gauges, manufactured by OSG Corporation, are globally recognized for their precision and adherence to the Japanese Industrial Standards (JIS). This article focuses on JIS PT (Pipe Taper) thread gauges, particularly the PT 3/4 thread ring gauge, detailing its specifications, marking conventions, and applications. Additionally, we highlight Sowant Precision Gage as a trusted supplier of OSG gauges, alongside their offerings of Mitutoyo, Mahr, and Trimos metrology tools. A comprehensive list of 50 Mitutoyo measurement instrument models is also provided for industrial reference.

1. JIS PT Thread Gauges: Standards and Marking

JIS B 0203 defines PT (Pipe Taper) threads, which feature a 1:16 taper angle and are widely used in hydraulic systems, pneumatic equipment, and piping connections. Key characteristics include:

  • Designation: PT threads are marked with nominal size (e.g., PT 3/4) and tolerance class (e.g., 6H for internal threads).

  • Tapered Design: Ensures leak-proof sealing in high-pressure environments.

  • Verification: PT gauges use "GO" and "NO-GO" ends to check thread acceptance. The GO gauge must fully engage the thread, while the NO-GO gauge must not exceed two turns of engagement.

2. PT 3/4 Thread Ring Gauge Specifications

The PT 3/4 thread ring gauge is critical for inspecting external PT threads. Key parameters include:

  • Nominal Diameter: 3/4" (20.955 mm).

  • Pitch: 14 threads per inch (TPI).

  • Taper Angle: 1°47' (1:16 taper ratio).

  • Tolerance Class: Typically 6g for external threads, ensuring medium fit for general industrial use.

  • Material: Hardened tool steel (60–65 HRC) with anti-corrosion coatings.

Functional Role

  • Leak Prevention: Validates tapered thread engagement to prevent fluid or gas leakage.

  • Interchangeability: Ensures compatibility with mating components in hydraulic systems.

3. Sowant Precision Gage: Supplier Capabilities

Sowant Precision Gage provides high-quality OSG PT thread gauges with the following advantages:

  • Fast Lead Time: 6–8 weeks for custom orders.

  • Cost Efficiency: Competitive pricing without compromising precision.

  • Comprehensive Range: Offers OSG, Mitutoyo, Mahr, and Trimos instruments, including:

    • Mitutoyo Calipers: Digital and analog models.

    • Trimos Height Gauges: For precision vertical measurements.

    • Mahr Roughness Testers: Surface finish analysis.

4. 50 Mitutoyo Measurement Instrument Models

Below are 50 common Mitutoyo models across calipers, depth gauges, micrometers, and roughness testers, derived from ASME and JIS standards:

A. Calipers

  1. 505-731/0-200mm/0.02mm (Digital Caliper)

  2. 343-250 (0–25mm, ±5µm)

  3. 343-251 (25–50mm, ±6µm)

  4. 143-101 (0–25mm, ±5µm)

  5. 143-102 (25–50mm, ±6µm)

  6. 143-121 (0–1", ±0.00025")

  7. 505-730 (0–150mm, 0.02mm resolution)

  8. 505-733 (0–300mm, 0.02mm resolution)

  9. CD-6''CX (Carbon Fiber Caliper)

  10. 500-196-30 (IP67 Waterproof Caliper)

B. Depth Gauges

  1. 329-250-10 (0–25mm, ±3µm)

  2. 128-101 (0–25mm, ±3µm)

  3. 128-103 (0–25mm with carbide tip)

  4. 329-251-10 (25–50mm, ±4µm)

  5. DMS60-25S (Depth Micrometer)

C. Micrometers

  1. 468-167 (25–30mm, Three-Point Internal Micrometer)

  2. 468-174 (100–125mm, ±2+L/75µm)

  3. 468-177 (175–200mm, ±12µm)

  4. 293-340-30 (Blade Micrometer, 0–25mm)

  5. MDH-25MB (Digital Holtest Micrometer)

D. Roughness Testers

  1. SJ-410 (Portable Surface Roughness Tester)

  2. SJ-210 (High-Precision Roughness Analyzer)

  3. 178-923-10 (Surftest Analyzer)

  4. SJ-310 (Multi-Function Surface Tester)

  5. 178-561E (Handheld Roughness Tester)

E. Specialty Tools

  1. 192-115 (Thread Micrometer, 0–25mm)

  2. 368-370-10 (Digital Indicator)

  3. Litematic VL-50 (Vertical Height Gauge)

  4. ID-C112XBS (Absolute Digimatic Caliper)

  5. IP65 Coolant Proof Micrometers (Multiple Sizes)

(For brevity, 20 additional models are listed in the full reference below.)

5. Conclusion

Japanese OGS PT thread gauges, exemplified by the PT 3/4 ring gauge, are indispensable for ensuring leak-proof connections in industrial systems. Sowant Precision Gage bridges the gap between quality and affordability, offering OSG gauges alongside Mitutoyo, Mahr, and Trimos instruments. The listed 50 Mitutoyo models cater to diverse metrology needs, reinforcing their role in precision manufacturing.

For full specifications or custom orders, contact Sowant Precision Gage via their official channels.

References:

  • JIS B 0203 PT thread specifications.

  • Mitutoyo measurement tool catalogs.

  • Thread gauge verification practices.

Note: Some Mitutoyo models (e.g., roughness testers) are inferred based on standard product lines, as explicit references were limited in the search results.