1 1/8" x 12 UNF Nogo Thread Ring Gauge 2A Hardened Gauge Steel ANSI/ASME B1.1/B1.2 - Metav IndustryLine

Take advantage of the combination of fast, standards‑based inspection and robust, hardened construction to keep production moving with fewer rejects and faster throughput; precision verification is simplified by the NOGO function and ANSI/ASME compliance. Order the gauge directly via Metav Werkzeuge or ask the Metav consultants for application advice.

Thread ring gauge UNF NOGO, 1 1/8" x 12, 2A — Metav IndustryLine

The Thread ring gauge UNF NOGO, 1 1/8" x 12, 2A is a compact inspection gauge designed for rapid verification of external UNF threads to the ANSI/ASME standard, ideal for quality control in mechanical workshops and production lines.

• Right-hand UNF thread check
• ANSI/ASME B1.1/B1.2 compliance
• Hardened gauge steel construction
• NOGO verification for 2A tolerance

Fast, clear go/no‑go verification for external threads

The NOGO ring is engineered for immediate quality decisions on external UNF threads: the NOGO function rejects oversized threads and prevents out‑of‑tolerance parts from proceeding through assembly. The compact form factor and clear acceptance criteria reduce inspection time, supporting a lean quality workflow and lowering the risk of downstream failures. Using a dedicated ring gauge speeds up the inspection process compared with micrometre checks and simplifies operator training while maintaining repeatable results.

Durable construction that resists wear and handling

Manufactured from hardened gauge steel, this ring resists wear across repeated use, so the dimension that defines acceptability remains stable over long production runs. The robust construction and the specified 2A tolerance are selected to ensure the gauge keeps a consistent reference surface under normal shop conditions. For workshops that require a reliable measuring reference without frequent replacement, the gauge's material choice and heat treatment deliver a low total cost of ownership through extended service life.

Traceable standards and what the figures mean for inspection

Compliance with ANSI/ASME B1.1/B1.2 ensures that the thread form, pitch, and profile checked by the ring match recognised international dimensions for UNF threads. The designation 1 1/8" x 12 indicates the nominal diameter and the 12 threads per inch pitch, while the 2A class specifies the external thread tolerance envelope. For purchasers unfamiliar with these codes: selecting a gauge that matches the target standard removes ambiguity in acceptance criteria and supports consistent interchangeability across suppliers.

Practical benefits on the shop floor and in quality control

A dedicated NOGO ring delivers quick decisions at the point of manufacture: faulty workpieces are removed before value is added, saving rework and inspection time. The gauge’s modest weight (approximately 0.6 kg) and compact footprint make it straightforward to integrate into inspection benches or portable checking kits. Where traceability and conformity are required, the presence of a fixed‑dimension ring reduces operator variability and aligns daily checks with documented standards.

Contact Metav Werkzeuge today for tailored advice and to secure the Metav IndustryLine thread ring gauge with ANSI/ASME compliance for your inspection process — our consultants in Emmerich will assist with application details and availability.

Technical Data

• Article number: M315.991.F
• Label: Thread ring gauge UNF NOGO, 1 1/8" x 12 ANSI/ASME B1.1 / 2A
• GTIN: 4054469181080
• Manufacturer: Metav IndustryLine

Facts

• Nominal size: 1 1/8"
• Pitch: 12 threads per inch (tpi)
• Tolerance class: 2A
• Weight: 0.6 kg
• Standard: ANSI/ASME B1.1/B1.2
• ECLASS: 21170214

Special features

• Material: gauge steel, hardened
• Thread direction: right-hand thread
• Type: NOGO ring for external thread verification
• Intended use: production and incoming inspection

FAQ

What is the primary purpose of this gauge?
The thread ring gauge is a NOGO inspection tool for rapid verification of external UNF threads against the ANSI/ASME B1.1 profile; it is intended to identify oversized or out‑of‑tolerance threads.

How is the gauge used in routine inspections?
The NOGO ring is tried on the external thread; if it fails to seat as intended, the component is rejected. The thread ring gauge UNF NOGO, 1 1/8" x 12, 2A (SKU M315.991.F) provides a clear accept/reject result suitable for inline checks.

What does the 2A tolerance class mean?
The 2A designation defines the external thread tolerance band for manufactured parts; using a 2A NOGO ring confirms that the part does not exceed the upper limits of that external thread class.

Which materials is the gauge made from and why does it matter?
The gauge is made from hardened gauge steel, chosen for wear resistance and dimensional stability so that reference surfaces remain accurate over prolonged use.

Is the gauge suitable for workshop and production environments?
Yes; the NOGO ring is intended for shop‑floor and production inspection where quick conformity checks to ANSI/ASME B1.1 are required and repeatability under routine handling is essential.

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