1 1/2" UNC Go/No-Go Thread Ring Gauge 6 TPI, Hardened Gauge Steel ANSI/ASME B1.1/B1.2 - Metav IndustryLine

Take advantage of the combination of ANSI/ASME conformity, the NOGO go/no-go function and the durable hardened gauge steel for reliable, fast thread inspection. Order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread ring gauge UNC NOGO, 1 1/2 x 6, ANSI B1.1 — NOGO inspection gauge by Metav IndustryLine

Thread ring gauge UNC NOGO, 1 1/2 x 6 ANSI B1.1 2A designed for rapid go/no-go verification of external UNC threads in workshop and production environments

• Hardened gauge steel for durable wear resistance
• ANSI/ASME B1.1 compliance for standardised inspection
• NOGO ring for quick go/no-go verification
• Compact design, nominal weight 0.7 kg

Rapid, standard-compliant verification to protect production quality

The NOGO thread ring gauge is engineered to provide a fast, objective decision on external UNC threads, reducing downstream rework and scrap. Built to the ANSI/ASME B1.1/B1.2 specification with tolerance class 2A, the gauge delivers inspection results that align with widely accepted US thread standards. The NOGO function prevents acceptance of undersized or incomplete external threads by failing parts that do not meet the required form, which streamlines quality control and shortens cycle times on the shop floor. The combination of clear pass/fail logic and compliance with an established standard supports traceable, auditable inspection processes.

Durable construction for repeatable measurements and low life-cycle cost

Manufactured from hardened gauge steel, the ring offers high wear resistance and retains form under regular use, making it suitable for repetitive checks in production runs. The compact form factor and the nominal weight of 0.7 kg make handling straightforward at inspection stations while still offering sufficient mass for stable engagement with threaded parts. Reduced maintenance intervals and predictable wear behaviour contribute to a lower total cost of ownership compared with softer materials. When stored and used in line with standard good-practice inspection routines, the gauge sustains dimensional integrity and supports consistent results across many inspection cycles.

Traceability and workshop integration for quality assurance

Identified as M315.995 and supplied with a clear label and GTIN, the ring gauge is easy to document within quality-management systems and inventory records. The device is intended exclusively for go/no-go checks of external UNC threads with a nominal size of 1 1/2" and a pitch of 6 tpi, providing unambiguous applicability for engineering and maintenance teams. Its simple operation supports quick training of inspectors and straightforward integration into first-article inspection or in‑process control routines. Where formal record-keeping is required, the gauge's standard references facilitate conformity reports and help maintain consistent production tolerances.

For assured thread inspection and workshop-ready measuring equipment, request the Metav IndustryLine NOGO thread ring gauge via Metav Werkzeuge — our Emmerich team will advise on suitability and delivery options

Technical data

• Article number: M315.995
• GTIN: 4054469181189
• Label: Gewinde-Lehrring UNC NOGO, 1.1/2 x 6 ANSI B1.1 / 2A

Facts

• Weight: 0.7 kg
• Thread size: 1 1/2"
• Pitch: 6 tpi
• Tolerance class: 2A

Special features

• Material: hardened gauge steel
• Type: NOGO ring gauge for external threads
• Standard: ANSI/ASME B1.1/B1.2
• Use: go/no-go inspection of external UNC threads

FAQ

What size and pitch does this ring gauge check?
The ring gauge verifies external UNC threads of nominal size 1 1/2" with a 6 tpi pitch.

Is the gauge compliant with recognised standards?
Yes — this NOGO ring gauge is manufactured to ANSI/ASME B1.1/B1.2 and supplied as tolerance class 2A for standardised inspection.

What material is the gauge made from and why does it matter?
Constructed from hardened gauge steel, the ring ensures long-term wear resistance and repeatable dimensional stability during routine checks.

How is the product identified for inventory and traceability?
The gauge is listed as M315.995 and carries the GTIN 4054469181189 to simplify documentation and stock control.

Can this gauge be used for internal thread inspection?
No — the device is a NOGO ring gauge specifically for external thread verification; internal thread checking requires the corresponding plug gauge.

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