1.1/2" Thread Plug Gauge UNC 6 TPI ANSI B1.1 2B - Metav IndustryLine

Take advantage of a precision inspection tool that combines hardened gauge steel construction, compliance with ANSI/ASME B1.1 and a clear 2B tolerance for reliable internal thread verification; order the item directly via Metav Werkzeuge or consult our advisers for technical matching to production requirements.

Thread plug gauge UNC 1½" x 6 TPI — Thread plug gauge, ANSI/ASME B1.1, 2B (Metav IndustryLine)

The Thread plug gauge UNC 1½" x 6 TPI, 2B is a purpose-made inspection gauge for rapid verification of internal UNC threads in production and incoming inspection environments.

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 threads
• Tolerance class 2B for internal threads
• 1½" UNC with 6 TPI pitch

Rapid, standard-compliant checks that reduce rework

Designed for fast go/no-go inspection, this gauge supports immediate acceptance decisions on UNC internal threads. With conformity to ANSI/ASME B1.1, inspections follow established thread geometry standards so measurement uncertainty is reduced and documentation requirements are straightforward. The clear pass/fail nature of the tool shortens inspection time, improving throughput while safeguarding component compatibility.

Durable materials for long service life

Constructed from hardened gauge steel, the gauge resists wear in repetitive use and preserves its functional dimensions over many cycles. This material choice gives stable contact surfaces and predictable behaviour under normal workshop handling. The resulting durability lowers replacement frequency and supports consistent checking procedures across batches, which is beneficial for production environments requiring repeatable quality control.

Precise tolerance interpretation for internal threads

Tolerance class 2B identifies the acceptance range for internal threads and aligns with common engineering practice for UNC fastenings. Using this gauge provides an unambiguous statement about whether an internal thread meets the defined tolerance band, avoiding subjective judgments. The 1½" UNC size with 6 TPI is suitable for large assemblies where thread fit and mechanical integrity are critical, ensuring reliable assembly performance.

Integrating the gauge into inspection routines

Implementation is straightforward: use the gauge as a go/no-go reference during incoming inspections, in-process checks or final quality control. The compact, single-piece design makes handling simple and fast, and the weight and balance facilitate stable seating in the thread. Regular visual inspection and scheduled interchange with calibrated masters will maintain confidence in inspection outcomes and support traceable quality records.

Contact Metav Werkzeuge GmbH in Emmerich for availability, technical matching and ordering of Metav IndustryLine gauges including the M315.935

Technical Data

• Article number: M315.935
• GTIN: 4054469179902
• Weight: 0.8 kg
• Material: gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Tolerance class: 2B
• Pitch: 6 TPI
• Size: 1 1/2"
• Customs tariff number: 90173000

Facts

• Size (inch): 1½"
• Thread pitch: 6 TPI
• Tolerance: 2B
• Weight (kg): 0.8

Special features

• Conforms to ANSI/ASME B1.1/B1.2
• Application: verification of internal UNC threads
• Product category: thread plug gauge / gauges
• Manufacturer: Metav IndustryLine

FAQ

How is the gauge used for go/no-go inspection?
The gauge is applied by seating the plug into the internal thread: the go end must engage fully for acceptance while the no-go end must not enter beyond its limit; the M315.935 from Metav IndustryLine serves as a quick verification tool for UNC internal threads.

What does tolerance class 2B mean for internal threads?
Tolerance class 2B specifies the internal thread fit and allowable form variations for standard UNC threads; the 2B designation used with this gauge ensures compatibility with corresponding external threads manufactured to the matching class.

Is this gauge compliant with recognised thread standards?
Yes — the gauge conforms to ANSI/ASME B1.1, ensuring dimensional compatibility with industry-standard UNC thread profiles and making it suitable for regulated production environments.

What material and durability can be expected?
Made from hardened gauge steel, the gauge is engineered for wear resistance and long-term dimensional stability under routine inspection cycles, supporting sustained accuracy for batch checks.

For which applications is this plug gauge suitable?
The gauge is intended for production and incoming inspection of larger UNC threaded components, assemblies and fixtures where a 1½" UNC, 6 TPI specification and reliable internal-thread verification are required.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com