M106×2.0-6g Thread Ring Gage ,ISO 1502 standard or ASME B1.16M, Brand:SWTG (Sowant Precision Gage Co.,Ltd.) was made by CNC thread grinding machine, all thread data in tolerance.

Comprehensive Guide to ISO 1502 Metric Thread Ring Gauges: M106×2.0-6g Parameters and SWTG Product Specifications

1 Introduction to ISO 1502 Standard and Thread Ring Gauges

ISO 1502 is the international standard that specifies the gauges and gauging procedures for ISO general-purpose metric screw threads. This technical standard establishes uniform practices for inspecting metric threads to ensure proper assembly and interchangeability of threaded components across global manufacturing industries. For companies and engineers working with precision mechanical components, understanding and implementing ISO 1502 is crucial for maintaining quality control in threaded part production and verification.

Thread ring gauges are essential measuring instruments used for comprehensive inspection of external threads. These gauges feature both GO and NO-GO members that simultaneously verify the maximum and minimum material limits of threaded workpieces. According to ISO 1502 requirements, thread ring gauges provide a rapid and reliable method for determining the acceptability of external threads in production environments, ensuring that manufactured parts conform to specified dimensional parameters and tolerance classes.

This article will provide a detailed examination of the technical parameters for M106×2.0-6g thread ring gauges as specified in ISO 1502, along with corresponding requirements in the ASME B1.16M standard. Additionally, we will introduce the comprehensive product range of SWTG metric thread ring gauges, which are manufactured with precision engineering and premium materials to exceed industry standards for accuracy and durability.

2 Key Parameters of M106×2.0-6g Thread Ring Gauge According to ISO 1502

The M106×2.0-6g thread ring gauge is designed for inspecting right-hand metric ISO fine threads with a nominal diameter of 106 mm and a pitch of 2.0 mm. The "6g" designation indicates a medium tolerance grade for external threads commonly used in general engineering applications. Below are the essential parameters and specifications for this gauge according to ISO 1502 standards.

2.1 Thread Dimensions and Geometry

• Major Diameter: The nominal major diameter for M106×2.0 thread is 106 mm. For the 6g tolerance class, the actual major diameter limits are derived from ISO 1502 specifications and fall within a defined range to ensure proper assembly with mating parts.

• Pitch Diameter: This is the most critical dimension for thread gauging, representing the effective diameter where the widths of the thread and spaces are equal. For M106×2.0-6g thread ring gauge, the pitch diameter must be maintained within precise tolerance limits to ensure proper thread engagement and strength.

• Minor Diameter: The minor diameter completes the thread profile geometry, contributing to the overall thread strength and engagement characteristics.

• Pitch: The distance between corresponding points on adjacent threads is specified as 2.0 mm, classifying this as a fine pitch thread suitable for applications requiring high adjustment precision or where wall thickness is limited.

• Thread Angle: ISO metric threads feature a symmetrical V-profile with an included angle of 60°, as defined in the basic ISO 68-1 thread profile.

• Lead: For single-start threads like the M106×2.0, the lead is identical to the pitch, resulting in a lead of 2.0 mm.

*Table: Key Dimensions for M106×2.0-6g Thread Ring Gauge*

Note: Exact values for pitch diameter and minor diameter should be calculated according to ISO 1502 formulas and tolerance tables.

2.2 Tolerance Specifications

The 6g tolerance class specified for this thread ring gauge represents a medium quality grade commonly applied to general engineering applications. According to ISO 1502, the tolerance designation comprises two components: the tolerance grade (6) and the tolerance position (g). The number indicates the magnitude of the tolerance, while the lowercase letter signifies the position relative to the basic profile, with 'g' representing an upper deviation (fundamental deviation) for external threads.

The GO member of the thread ring gauge checks the maximum material limit, incorporating the cumulative effects of pitch, flank angle, and taper deviations. Conversely, the NO-GO member verifies the minimum material limit, ensuring the thread does not deviate beyond acceptable minimum dimensions. For workshop applications, thread ring gauges are typically calibrated using workshop setting plugs that establish the appropriate acceptance criteria.

The grinding of the first thread (from 1 mm pitch upward), as implemented in quality thread gauges, serves to remove contaminants from workpieces and prevents premature breakage of the first thread, enhancing the gauge's longevity and measurement consistency.

3 Corresponding Requirements in ASME B1.16M Standard

The ASME B1.16M standard provides the American counterpart to ISO 1502, establishing specifications for gages and gaging for metric M screw threads. While largely harmonized with ISO standards, there are important nuances that engineers and quality professionals should recognize when working with both standards.

3.1 Alignment with ISO 1502

ASME B1.16M-1984(R2016) covers the essential specifications and dimensions for the gages used on M series metric screw threads. This standard encompasses the specifications and dimensions for thread gages and measuring equipment, describing the basic purpose and use of each gage. The fundamental thread profile parameters, including the 60° symmetrical thread with basic ISO 68-1 profile designated as M profile, remain consistent between ASME B1.16M and ISO 1502.

For the M106×2.0-6g thread ring gauge, the primary dimensions including major diameter, pitch diameter, minor diameter, pitch, and thread angle maintain identical values between both standards. This interoperability ensures that components manufactured to either standard can be reliably inspected using the same gauging principles, facilitating international trade and manufacturing consistency.

3.2 Supplementary Provisions in ASME B1.16M

While maintaining technical alignment on fundamental parameters, ASME B1.16M includes additional useful information in its non-mandatory appendices. These sections provide conversion tables between metric and customary measurement systems, offering practical guidance for applications requiring cross-standard compatibility.

The ASME standard also provides specific guidance on inspection methodologies and acceptance criteria that may differ slightly from ISO approaches. These differences primarily concern administrative aspects of gauging practice rather than fundamental dimensional requirements, allowing organizations to implement appropriate quality procedures based on their specific regulatory and customer requirements.

4 Superior Performance of SWTG Thread Ring Gauges

SWTG thread ring gauges are manufactured to exceed the requirements of both ISO 1502 and ASME B1.16M standards, incorporating premium materials and precision engineering to deliver exceptional performance and longevity in industrial environments.

4.1 Material Excellence and Durability

SWTG thread ring gauges are crafted from Cr15 bearing steel, a high-carbon chromium steel renowned for its exceptional wear resistance and dimensional stability. This premium material selection is heat-treated to achieve a remarkable hardness of 58-62 HRC, significantly extending the gauge's service life even in high-volume production environments where frequent use would rapidly degrade conventional gauges.

The enhanced material properties of SWTG gauges provide superior resistance to thread wear and deformation, maintaining measurement integrity through extended use. This translates to reduced calibration frequency and lower total cost of ownership, as the gauges require less frequent replacement compared to conventional alternatives.

4.2 Precision Manufacturing and Quality Assurance

SWTG employs advanced CNC grinding technology to produce thread ring gauges with exceptional dimensional accuracy. This computer-controlled manufacturing approach ensures that all thread parameters, including the critical pitch diameter, thread form, and lead, are maintained within the strict tolerance boundaries specified in international standards.

Every SWTG thread ring gauge undergoes rigorous quality verification to confirm compliance with both ISO 1502 and ASME B1.16M requirements. This comprehensive quality assurance process includes full dimensional inspection and, when specified, comes with formal calibration documentation providing traceability to national measurement standards.

5 Comprehensive Product Range: 60 Metric Thread Ring Gauge Specifications

SWTG maintains an extensive inventory of metric thread ring gauges, encompassing a wide range of sizes and tolerance classes to meet diverse manufacturing requirements. Below is a comprehensive listing of 60 standard metric thread ring gauge configurations available from stock.

Table: SWTG Metric Thread Ring Gauge Specifications

6 Conclusion and Contact Information

SWTG thread ring gauges represent the pinnacle of precision measurement technology, combining strict adherence to international standards with advanced manufacturing techniques and premium materials. The comprehensive product range, including the featured M106×2.0-6g configuration, provides manufacturing organizations with reliable inspection solutions that ensure product quality and manufacturing efficiency.

For detailed technical specifications, pricing information, or to discuss your specific thread gauge requirements, please contact our technical sales team at sales@labsto.com. Our engineering specialists are available to provide personalized technical support and help you select the optimal gauging solutions for your specific application requirements.

SWTG is committed to delivering measurement solutions that exceed expectations through precision engineering, rigorous quality control, and exceptional customer service. We invite you to experience the SWTG difference in your precision measurement applications.