No. 3 56 TPI UNF NOGO Thread Ring Gauge, Right-Hand, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of a combination of ANSI/ASME conformity, hardened gauge-steel construction and a precise 2A tolerance band to ensure consistent pass/fail control on external UNF threads. Order the gauge directly via Metav Werkzeuge or consult our application specialists for selection assistance.

Thread ring gauge NOGO No. 3 x 56 (UNF) — Metav IndustryLine

Thread ring gauge NOGO No. 3 x 56 (UNF) is a precision inspection gauge for rapid go/no-go verification of external UNF threads to ANSI/ASME B1.1 tolerances, designed for production and quality-control environments

• NOGO thread ring No. 3 x 56 UNF
• Hardened gauge steel for long service life
• Conforms to ANSI/ASME B1.1/B1.2

Certainty for thread conformity and process control

The NOGO inspection ring achieves a fast, unambiguous result when checking external UNF threads: a pass is identified by the inability to engage the NOGO side, proving the thread does not exceed the maximum material condition. Manufactured from hardened gauge steel, the ring delivers stable dimensions under repeated use, which reduces measurement drift and the need for frequent replacement. This makes it a dependable tool for inline checks and final inspection stations, helping to reduce scrap and prevent out-of-tolerance assemblies.

Durable design that keeps inspection cycles moving

Built to withstand repetitive handling, the inspection ring combines a compact form with robust material choice to deliver longevity. The hardened gauge-steel body resists wear from frequent engagement with threaded parts, while the No. 3 x 56 sizing (UNF) and 2A tolerance class reflect micromechanical precision appropriate for fine-pitch threads. Such durability minimises downtime associated with gauge replacement and keeps quality-control routines efficient, supporting continuous production flows.

Compliance and traceability in regulated workflows

Adherence to ANSI/ASME B1.1/B1.2 standards provides a clear, auditable basis for acceptance criteria in manufacturing and inspection protocols. The 2A tolerance designation indicates the external-thread class to which the ring corresponds, ensuring compatibility with specified mating internal threads. For manufacturers operating to documented quality systems, the rule-based outcome from a go/no-go gauge simplifies decision-making and records, aiding conformity checks without the need for elaborate measurement setups.

Practical benefits for the workshop and production line

As a purpose-made thread ring gauge, the device offers a rapid alternative to dimensional measurement when the objective is conformity rather than metrology. Its straightforward go/no-go function reduces operator interpretation and speeds up routine checks at assembly, in incoming inspection or at final control. The right-hand thread configuration ensures direct applicability to standard UNF components manufactured with conventional thread direction, helping the gauge integrate seamlessly into existing inspection procedures.

Contact Metav Werkzeuge for application advice, availability and to secure the Metav IndustryLine NOGO thread ring No. 3 x 56 (SKU M315.973.F) directly from our Emmerich hub by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: M315.973.F
• GTIN: 4054469180656
• Weight: 0.1 kg

Core figures

• Size: No. 3
• Thread pitch: 56 TPI
• Tolerance class: 2A

Special features

• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Type: NOGO thread ring
• Thread direction: right-hand

FAQ

What does the NOGO designation mean for this thread ring gauge?
The NOGO designation on the Thread ring gauge NOGO No. 3 x 56 (UNF) indicates the ring checks that an external thread does not exceed the maximum material condition; if the NOGO side engages, the part fails the tolerance check.

Which standard and tolerance does this gauge follow?
The inspection ring is manufactured to ANSI/ASME B1.1/B1.2 and corresponds to an external-thread tolerance of 2A, matching the common specification for UNF external threads.

Is the thread direction specified for the gauge?
Yes, the Metav IndustryLine NOGO ring is produced as a right-hand thread, matching standard UNF components with conventional thread direction.

For which applications is this ring particularly suited?
The ring is intended for rapid pass/fail verification of external UNF threads in production, incoming inspection and final acceptance processes where objective go/no-go decisions speed up workflow.

What identifier should be used when ordering or referencing this item?
Reference the Metav IndustryLine Thread ring gauge NOGO No. 3 x 56 (UNF), SKU M315.973.F, for accurate ordering and traceability.

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