3/8" 16 UNC Thread Go/No-Go Ring Gauge NOGO, Hardened Tool Steel, ANSI B1.1 2A - Metav IndustryLine

Take advantage of fast, standards-compliant inspection and durable construction to keep thread checks efficient and reproducible; the hardened gauge steel and ANSI/ASME B1.1 conformity ensure reliable results for production control. Order the thread ring gauge directly via Metav Werkzeuge or ask our consultants if needed.

Thread ring gauge UNC NOGO, 3/8-16 ANSI/ASME B1.1 / 2A — Metav IndustryLine hardened go/no-go ring

The Thread ring gauge UNC NOGO, 3/8-16 2A is a hardened go/no-go ring for fast verification of external UNC threads in production and inspection environments.

• Hardened gauge steel for long service life
• ANSI/ASME B1.1/B1.2 compliance
• NOGO ring for rapid go/no-go checks

Accuracy and compliance that streamlines inspection

A compact NOGO ring delivers immediate pass/fail results during routine checks, reducing measurement time and operator interpretation. The ring is manufactured from hardened gauge steel, which maintains dimensional stability under repeated use and minimises wear rates that would otherwise erode tolerance confidence. Conformity to ANSI/ASME B1.1 ensures the thread form and pitch are assessed against the accepted UNC standard, enabling consistent use across supply chains and in-house quality procedures. The product’s design supports tight workflow integration and faster decision cycles on the shop floor.

Robust construction for repeatable results

Durable construction and a defined tolerance class guarantee predictable behaviour in inspection routines. The tool is produced to tolerance class 2A, giving a clear acceptance boundary for external threads and helping avoid ambiguous assessments. Hardened material combined with precise machining reduces the need for frequent replacement, while the compact ring format allows quick handling and straightforward storage between checks. This reliability delivers operational savings by lowering downtime for gauge replacement and simplifying routine calibration planning.

Practical fit for quality systems and traceability

The ring is sized for a 3/8-16 UNC thread form and is ideal for use in incoming inspection, in-process checks or final verification. Traceability is supported through identifiable markings and product data, enabling documentation within quality records and certificates. When integrated into a documented inspection plan, the gauge helps demonstrate compliance with contractual and regulatory requirements and supports a consistent approach to thread acceptance criteria across batches and suppliers.

Contact Metav Werkzeuge for detailed compliance data and assistance with Metav IndustryLine thread gauges, and arrange the right inspection solution for the production line.

Technical data

• SKU: M315.982
• GTIN: 4054469180847
• Size: 3/8"
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2

Core measurements

• Thread pitch: 16 tpi
• Tolerance class: 2A
• Weight: 0.2 kg
• ECLASS: 21170214

Materials & features

• Type: UNC NOGO thread ring gauge
• Application: Go/no-go verification of external threads
• Category: Gauges / Thread inspection

FAQ

What standard does this ring gauge check against?
The ring gauge verifies threads to the ANSI/ASME B1.1 UNC standard; the Metav IndustryLine UNC NOGO ring with SKU M315.982 is produced to that specification.

Is the ring suitable for production use or only for laboratory inspection?
The hardened gauge steel and robust design make the ring suitable for regular production checks as well as inspection-room use to maintain consistent acceptance criteria.

What does the 2A tolerance class mean for checks?
Tolerance class 2A defines a commonly used external thread tolerance for UNC that ensures a balance between manufacturability and functional fit when using the NOGO verification ring.

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