No. 2 x 64 TPI UNF Nogo Thread Ring Gauge, Right-Hand, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of a robust inspection solution that pairs ANSI/ASME B1.1 compliance with hardened gauge steel and a precise 2A tolerance class for reliable thread acceptance testing; order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Gewinde-Lehrring UNF NOGO, No. 2 x 64 — NOGO thread ring gauge, ANSI/ASME B1.1, 2A tolerance, Metav IndustryLine

The Gewinde-Lehrring UNF NOGO, No. 2 x 64 is a dedicated NOGO ring gauge for quick pass/fail inspection of UNF threads in production and incoming inspection, designed for standard-compliant quality control in mechanical workshops and components manufacturing.

• NOGO function for reliable rejection of oversize threads
• Hardened gauge steel for long service life
• Conforms to ANSI/ASME B1.1/B1.2 standards
• Tolerance class 2A for precise thread control

Ensure production quality with a standards-based NOGO control

A NOGO ring gauge is the straightforward, low-risk method for preventing oversize external threads from passing through final checks. Constructed from hardened gauge steel, this ring resists wear and preserves the reference profile over long inspection cycles, so measurements remain reproducible. The gauge follows ANSI/ASME B1.1/B1.2, giving a clear, normative basis for acceptance criteria; the 2A tolerance class represents industry-standard allowance for external threads, ensuring results are compatible with typical engineering specifications. As a consequence, the device reduces the chance of assembled failures caused by oversized threads and supports reproducible quality control workflows.

Fast, practical inspection that fits a production line

Designed as a compact NOGO ring for UNF No. 2 x 64, the gauge supports efficient go/no-go checks at receiving, in-process inspection or final control. The simple tactile check removes interpretation ambiguity: if the NOGO does not enter, the thread is within tolerance; if it does, the component is rejected for rework or segregation. The lightweight construction (approx. 0.1 kg) and robust finish enable frequent handling without sacrificing durability, helping to keep throughput steady and reduce rework costs. Integration into standard inspection routines is immediate, which makes this ring a pragmatic choice for quality assurance in small-batch production as well as larger-scale runs.

Practical handling, maintenance and traceability for workshop use

The ring gauge is supplied as a ready-to-use control artefact; regular visual inspection and periodic verification against master gauges will maintain measurement integrity. Stored clean and protected from contamination, the hardened gauge steel resists corrosion but benefits from light oiling in humid environments. For documented quality systems, the ring can be referenced in inspection records as the normative check for UNF No. 2 x 64 thread controls. Choosing a standards-conformant ring like this supports auditability and reduces ambiguity in nonconformance handling, reinforcing both operational reliability and customer trust in delivered components.

Contact Metav Werkzeuge today to secure this Metav IndustryLine NOGO thread ring gauge and ensure standard-compliant thread control at your production or inspection station — Metav Werkzeuge provides expert advice and fast delivery from Emmerich.

Technical Data

• Article number: M315.972.F
• GTIN: 4054469180632
• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Tolerance class: 2A
• Thread designation: UNF No. 2 x 64
• Feature: NOGO ring gauge
• Special note: right-hand thread

Facts

• Threads per inch: 64 tpi
• Weight: 0.1 kg
• Tariff number: 90173000

Special features

• Right-hand thread configuration
• Category: ring gauge / plug and ring gauges (inspection gauges)
• Intended use: production and incoming inspection

FAQ

What does NOGO mean and how does it work?
A NOGO ring gauge is used to verify that an external thread is not oversized; the Gewinde-Lehrring UNF NOGO, No. 2 x 64 (Metav IndustryLine, SKU M315.972.F) must not enter a correct thread — if it does, the part is rejected.

Which standard does this thread ring comply with?
The ring is manufactured to ANSI/ASME B1.1/B1.2 thread form standards and graded to tolerance class 2A, ensuring compatibility with common engineering and inspection practices.

Is this gauge suitable for right-hand threads?
Yes, the gauge is specified for right-hand threads, matching the intended UNF external thread direction for No. 2 x 64 parts.

What material is the gauge made from and why?
The ring is made from hardened gauge steel, chosen for wear resistance and dimensional stability so that the reference profile remains consistent through repeated inspections.

How should the gauge be maintained to preserve accuracy?
Keep the ring clean and lightly oiled in humid environments, perform periodic verification against master standards, and record checks in inspection logs for traceability of thread controls.

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