1 1/4" UNEF Thread Go/No-Go Ring 18 TPI Right-Hand Hardened Gauge Steel ANSI B1.1/B1.2 - Metav IndustryLine

Take advantage of precise thread acceptance control with a hardened gauge steel construction and ANSI/ASME B1.1 compliance to safeguard production quality; order this NOGO ring directly via Metav Werkzeuge or consult our specialists for fitment advice.

Thread ring gauge UNEF NOGO, 1 1/4 x 18 (2A) — NOGO thread ring gauge, hardened gauge steel, Metav IndustryLine

Thread ring gauge UNEF NOGO, 1 1/4 x 18 (2A) for verification of external UNEF threads in production and incoming‑inspection environments

• NOGO type for thread conformity control
• Hardened gauge steel construction
• ANSI/ASME B1.1 compliant
• Right‑hand UNEF 1 1/4‑18 2A

Reliable pass/fail control that prevents false acceptance

The NOGO design provides an unambiguous go/no‑go decision that reduces downstream rework and rejects before assembly. Made from hardened gauge steel, the ring resists wear and maintains form stability under repetitive use, which delivers consistent verification of external threads. Integration into routine inspection prevents incorrect fittings and supports traceable quality checks.

Built to meet industry standards for interchangeability

Manufactured to ANSI/ASME B1.1/B1.2, the gauge is suited for environments where adherence to thread standards is mandatory. The 2A tolerance class ensures the tool corresponds to the established external thread limits for UNEF series, making it appropriate for serial production checks and supplier inspections where standard conformity is required.

Designed for practical workshop and production workflows

Lightweight yet robust, the ring simplifies shop‑floor handling and fastens rapid inspection cycles without specialised fixtures. The right‑hand UNEF specification and 18 tpi pitch match common US fine‑thread applications, enabling straightforward verification of threaded shafts and studs. The clear pass/fail function reduces operator uncertainty and speeds up quality processes.

Long‑term value through durability and traceability

The hardened material and precise manufacturing maintain gauge integrity over many inspection cycles, thereby lowering lifecycle costs when compared with softer tools. The ring supports consistent tolerance control in component production and incoming inspection, contributing to reproducible assembly quality and fewer warranty issues.

For stock enquiries or to discuss suitability for specific thread forms, contact Metav Werkzeuge for expert guidance and availability of the Metav IndustryLine NOGO thread ring gauge.

Technical data

• SKU: M315.992.EF
• GTIN: 4054469181127
• Manufacturer: Metav IndustryLine

Facts

• Size: 1 1/4"
• Pitch: 18 tpi
• Weight: 0.6 kg

Special features

• NOGO type thread ring
• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Tolerance class: 2A
• Thread direction: right‑hand
• Description: thread ring gauge for UNEF external threads

FAQ

Is this gauge suitable for checking external UNEF threads?
Yes. The Thread ring gauge UNEF NOGO, 1 1/4 x 18 (2A) is specifically designed for verification of external UNEF threads to the ANSI/ASME B1.1 standard.

What does the NOGO designation mean in practice?
NOGO indicates the ring must not pass over an externally threaded part; if it does, the thread is out of tolerance. The Metav IndustryLine NOGO ring provides a clear fail criterion for quality control.

Which tolerance class does the ring represent?
The gauge is made to 2A tolerance class for external threads, corresponding to the nominated limits for a standard UNEF external thread.

Can this ring be used for left‑hand threads?
No. This specific ring is manufactured for right‑hand UNEF threads; left‑hand threads require a dedicated gauge.

What identifying code should be referenced when ordering?
Refer to SKU M315.992.EF and the size designation UNEF 1 1/4‑18 when checking stock or placing an enquiry.

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