1 1/4" UNEF Thread Go Ring 18 TPI Right-Hand Hardened Gauge Steel ANSI B1.1/2A - Metav IndustryLine

Take advantage of a hardened gauge steel construction combined with strict ANSI/ASME B1.1 conformity and a precise 2A tolerance for reliable thread verification. Order the ring gauge directly via Metav Werkzeuge or consult the technical team for application advice.

Gewinde-Lehrring UNEF GO, 1 1/4 x 18 (ANSI/ASME B1.1) — Ring gauge, right-hand thread

A Gewinde-Lehrring UNEF GO, 1 1/4 x 18 ANSI B1.1 / 2A is a go ring gauge designed for fast verification of external UNEF threads in production and inspection environments.

• ANSI/ASME B1.1/B1.2 compliant go gauge
• UNEF 1 1/4 in, 18 tpi verification
• Hardened gauge steel for longevity
• Right-hand thread, tolerance class 2A

Ensure thread conformity with recognised standards

The go ring gauge provides an immediate go/no-go check against the ANSI/ASME B1.1 UNEF profile so that production batches meet specified thread form and pitch. As a GO gauge, it confirms whether an external thread falls within the allowable maximum material limit for assembly; acceptance is rapid and unambiguous, reducing downstream rework. The instrument’s compliance with the referenced standard offers a clear audit trail for quality control and supports consistent process decisions on the shop floor.

Durable construction for repeated inspection cycles

Manufactured from hardened gauge steel, the ring is engineered for wear resistance and dimensional stability under frequent use. The robust material means fewer replacements and predictable performance over time, which improves inspection throughput and lowers total cost of ownership. The compact mass of approximately 0.7 kg and stout form factor aid handling and reduce operator fatigue during repeated checks, making it well suited to continuous production or incoming inspection stations.

Accurate verification of 1 1/4 in UNEF threads

Designed for 1 1/4 in nominal threads at 18 tpi, the gauge verifies thread form, major diameter fit and pitch consistency in one simple operation. The marked tolerance class 2A corresponds to common external thread limits and provides a reliable acceptance criterion for mating parts. This gauge thus streamlines quality decisions: parts that pass the GO test proceed to assembly, while failures are flagged for rework or sorting, saving time and preventing costly assembly errors.

Practical benefits for workshop and quality teams

The ring’s right-hand configuration and unambiguous pass/fail functionality shorten inspection cycles and simplify operator training. Its rigid construction keeps runout and distortion low, supporting repeatable results across many cycles. Supplied as a dedicated verification tool for UNEF threads, it fits inspection benches and gauges sets used in mechanical engineering, maintenance departments and goods-receipt inspections, helping teams maintain steady production quality with minimal overhead.

Contact Metav Werkzeuge for tailored advice on thread inspection and secure immediate access to the ANSI/ASME‑compliant ring gauge M315.962.EF from stock in Emmerich.

Technical data

• Article number: M315.962.EF
• GTIN: 4054469180489
• Label: Gewinde-Lehrring UNEF GO , 1.1/4 x 18 ANSI B1.1 / 2A
• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2

Core specifications

• Nominal size: 1 1/4 in
• Threads per inch: 18 tpi
• Weight: 0.7 kg
• Tolerance class: 2A

Special features

• Go ring gauge for UNEF thread series
• Right-hand thread
• Designed for external thread verification
• SKU: M315.962.EF

FAQ

What is this gauge used for?
This ring gauge is used as a GO gauge to verify external UNEF 1 1/4 in × 18 tpi threads and to ensure conformity with the ANSI/ASME B1.1 profile.

Which thread tolerance does the gauge check?
The instrument checks external threads to tolerance class 2A, which is a standard external thread limit for many mechanical applications.

Is the gauge suitable for production inspection?
Yes, the hardened construction and clear GO functionality make the ring suitable for repetitive production or incoming inspection use with consistent pass/fail assessment.

Can this ring gauge be used for left-hand threads?
No, this specific gauge is manufactured as a right-hand thread verification tool and is not suitable for left-hand threads.

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