1 1/8" x 18 UNEF Thread Go/No-Go Ring Gauge, Right-Hand, Hardened Gauge Steel, ANSI B1.1 2A - Metav IndustryLine

Take advantage of the combination of robust hardened gauge steel, strict ANSI/ASME B1.1 conformity and a clear NOGO function for fast, reproducible thread inspection; order the ring gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread ring gauge UNEF NOGO, 1 1/8 in × 18 TPI — hardened gauge steel, ANSI B1.1 / 2A (Metav IndustryLine)

A thread ring gauge UNEF NOGO, 1 1/8 in × 18 TPI for pass/fail inspection of external UNEF threads to ANSI B1.1 / 2A, designed for workshop and production-line quality control

• NOGO design for quick go/no-go testing
• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 standard
• Right-hand UNEF thread, 1 1/8 in × 18 TPI

Rapid, standards-based inspection for production workflows

The primary purpose of this ring gauge is to deliver a fast, unambiguous inspection step that integrates smoothly into production and incoming‑goods routines. The NOGO function verifies that an external UNEF thread does not exceed the upper limit of the tolerance band; a correctly manufactured thread must not pass the NOGO ring. Built to ANSI/ASME B1.1 requirements and specified as 2A tolerance, the gauge provides conformity that simplifies documentation and audit traces. The hardened construction guarantees dimensional stability under normal workshop handling, which reduces rework and speeds throughput.

Durable construction that preserves accuracy

Constructed from hardened gauge steel, the ring is engineered for repeated use in demanding environments. Hardening increases wear resistance so the measuring edge maintains profile integrity over many cycles, ensuring consistent results without frequent requalification. The right‑hand UNEF geometry with 18 TPI is machined to reflect the external thread form, making the device suitable for direct, tactile pass/fail checks on shafts and small fittings. Weight and balance support secure hand operation while avoiding unnecessary operator fatigue during repetitive checks.

Practical benefits for quality departments and workshops

As a dedicated go/no‑go instrument, the ring gauge removes interpretation from routine checks: the part either passes the GO/NOGO logic or it does not. This clarity shortens inspection time per component and reduces decision latency on the shopfloor. The gauge is particularly appropriate where rapid acceptance sampling or 100% feed‑line checks are required and where traceable compliance with the ANSI standard is essential for customers, certificates or regulatory audits. The compact form factor also means straightforward storage and quick retrieval between operations.

Easy integration and traceability

Identification marks such as the size and tolerance class make it straightforward to include the gauge in calibration plans and quality records. Where a documented calibration history is required, the ring can be managed alongside existing gauge sets to maintain a clear audit trail. Its rugged finish and standard designation simplify communication with suppliers and external laboratories when spare gauges or reconditioning services are needed; the standardised format shortens lead times and avoids misunderstandings about thread form or pitch.

For assured compliance with ANSI/ASME B1.1 and reliable, repeatable checks using hardened gauge steel, contact Metav Werkzeuge to discuss integrating the UNEF NOGO thread ring gauge into the inspection process — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: M315.991.EF
• GTIN: 4054469181103
• Weight: 0.6 kg
• Size: 1 1/8 in

Facts

• Thread pitch: 18 TPI
• Tolerance class: 2A
• Tariff number: 90173000

Special features

• NOGO thread ring gauge
• Material: hardened gauge steel
• Right-hand UNEF thread
• Standard: ANSI/ASME B1.1/B1.2

FAQ

What does NOGO mean for a thread ring gauge?
A NOGO ring gauge indicates the upper limit for an external thread; the external thread must not pass the ring. The thread ring gauge UNEF NOGO, 1 1/8 in × 18 TPI is used to ensure threads are not oversize relative to ANSI/ASME B1.1 requirements.

Is this gauge suitable for production-line checks?
Yes. The ring gauge is intended for rapid pass/fail inspections in production and incoming‑goods control, where the hardened construction and standard designation support frequent use and traceable results.

Which standard and tolerance does the gauge follow?
The device is manufactured to ANSI/ASME B1.1/B1.2 and specified as 2A tolerance for external threads, providing a clear reference for conformity and documentation.

Can the ring gauge be reconditioned if worn?
Reconditioning is possible depending on wear; the hardened gauge steel construction extends service life, and Metav Werkzeuge can advise on reconditioning options and replacement where appropriate.

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