1" UNEF NOGO Thread Ring 1×20 TPI Right-Hand, ANSI B1.1/B1.2 Hardened Gauge Steel - Metav IndustryLine

Take advantage of a hardened gauge-steel construction and ANSI/ASME B1.1 conformity for reliable thread verification. The combination of standard compliance, a NOGO inspection function and robust material ensures repeatable acceptance testing and fewer downstream defects — order the ring gauge directly via Metav Werkzeuge or consult the specialists for application advice.

Thread ring gauge UNEF NOGO, 1" x 20, ANSI B1.1 / 2A by Metav IndustryLine

The Thread ring gauge UNEF NOGO, 1" x 20 is a hardened inspection gauge designed to verify external UNEF 1" × 20 right‑hand threads to ANSI/ASME B1.1 tolerances, intended for routine production and incoming inspection.

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 standard
• NOGO ring for 1" x 20 UNEF threads
• Tolerance class 2A inspection

Proven compliance with industry standards for consistent quality

The NOGO ring is manufactured to meet ANSI/ASME B1.1 requirements and the 2A tolerance class, providing unequivocal pass/fail assessment during thread inspection. Using a dedicated NOGO gauge removes subjective judgement from the final acceptance step: a properly manufactured external thread will not enter the NOGO ring, which directly translates into fewer non‑conforming parts proceeding through assembly. This standardised approach reduces rework and supports traceable quality control across serial production.

Robust materials for long service life on the shop floor

Machined from hardened gauge steel, the ring resists wear and preserves the inspection profile over extended use, delivering repeatable measurements across production batches. The material choice and heat treatment ensure dimensional stability despite frequent handling, while the compact 1" size keeps the tool convenient for bench inspection and portable quality stations. The right‑hand thread orientation matches common external fastener use, avoiding confusion during quick checks.

Designed to speed up inspection workflows

A NOGO ring offers an efficient binary inspection step that integrates easily into incoming goods checks and final inspections. Where gauges are used as a control gate, cycle times shorten and operator training is simplified: operators learn a single go/no‑go criterion instead of interpreting wear‑affected measurement charts. The result is a measurable reduction in inspection time per part and improved throughput without compromising safety or conformity.

Practical deployment across production and maintenance

Suitable for machine shops, tool rooms and quality departments, this ring gauge supports routine checks on threaded shafts, studs and turned components. The robust construction permits use near production lines and in maintenance stores where quick verification is required before assembly or welding operations. As a dedicated inspection tool, it complements dimensional equipment by providing a fast functional screen for threaded parts.

Advice and supply tailored to industrial requirements

Metav IndustryLine supplies the ring ready for shop use; complementing services and consultancy are available from the Metav Werkzeuge team to ensure correct implementation in inspection plans. Technical experts can advise on gauge handling, storage and replacement intervals to maintain measurement integrity and to align the tool with existing quality procedures.

For assistance with selection, procurement or integration of the UNEF NOGO ring, contact Metav Werkzeuge in Emmerich for specialist advice and supply: +49 2822 7131930 or info@metav-werkzeuge.com

Technical data

• Article number: M315.990.EF
• GTIN: 4054469181073
• Manufacturer: Metav IndustryLine
• Article name: Gewinde-Lehrring UNEF NOGO, 1 x 20 ANSI B1.1 / 2A

Facts

• Nominal size: 1"
• Thread pitch: 20
• Weight: 0.6 kg
• Tolerance class: 2A

Special features

• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Thread direction: right‑hand thread
• Eclass: 21170214
• Customs tariff number: 90173000

FAQ

What does the NOGO designation mean for inspection?
The NOGO designation indicates the ring is for no‑go verification: an external thread that enters the NOGO gauge fails the inspection, ensuring only parts within the acceptance envelope are passed.

Which standard does this ring follow and why is it important?
This ring is manufactured to ANSI/ASME B1.1 and B1.2 guidelines; adherence to these standards ensures compatibility with other standardised components and provides a uniform acceptance criterion across production.

Is the material suitable for frequent use in a production environment?
Yes, the ring is made from hardened gauge steel, chosen to resist wear and retain the inspection profile under repeated shop‑floor use.

Can this gauge be used for left‑hand threads?
This specific item is configured as a right‑hand thread NOGO ring; left‑hand variants are a different configuration and must be ordered separately.

How is identification handled for ordering and inventory?
The SKU for this item is M315.990.EF and the GTIN is 4054469181073, which can be used for procurement and traceability.

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