15/16" x 20 UNEF Thread Go Gauge Right-Hand, Hardened Gauge Steel, ANSI/ASME B1.1/B1.2 - Metav IndustryLine

Take advantage of a combination of ANSI/ASME conformity, hardened gauge steel construction, and a precise 2A external thread tolerance to keep thread production within specification and reduce rework. Order the gauge from Metav Werkzeuge or consult our specialists for application advice.

Thread Ring Gauge UNEF GO 15/16-20, ANSI B1.1 / 2A — Metav IndustryLine, hardened gauge steel, right-hand thread

The Thread Ring Gauge UNEF GO 15/16-20, ANSI B1.1 / 2A is a hardened GO ring gauge designed to verify external UNEF 15/16‑20 threads to ANSI/ASME tolerances for production and incoming inspection.

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 standard
• UNEF 15/16‑20 GO, tolerance class 2A
• Right‑hand thread form

Ensure thread quality with repeatable GO testing

A GO ring gauge is the fastest way to confirm that an external thread meets its major diameter and form limits without elaborate measurement setups. Manufactured in hardened gauge steel, this GO ring provides a durable pass condition check that integrates seamlessly into shop‑floor inspection routines. Using a GO ring for quick acceptance tests reduces machine downtime and limits scrap by identifying out‑of‑tolerance threads early. The combination of the UNEF 15/16‑20 pitch and 2A tolerance class ensures compatibility with components produced to ANSI/ASME B1.1 standards.

Standards compliance for reliable interchangeability

Conformity to ANSI/ASME B1.1 means the gauge corresponds to established U.S. Unified thread definitions, making it suitable for international production and maintenance tasks where thread interchangeability is essential. The specification 15/16‑20 denotes the nominal diameter and threads per inch, and the 2A designation specifies the external thread tolerance band; together they define the acceptance window for mating parts. For procurement and quality documentation, the gauge supports traceable inspection processes and clear pass/fail criteria.

Durable design for workshop environments

Constructed from hardened gauge steel, the ring resists wear during repeated use and preserves inspection accuracy over time. The item is supplied as a GO ring for right‑hand threads, suitable for routine throughput inspection at assembly stations or incoming goods checks. Its compact, single‑piece form factor is easy to handle and speeds up tactile checking compared with more elaborate metrology tools, offering a practical balance between robustness and operator convenience.

Practical application and inspection guidance

In practice, the GO ring gauge is passed over the external thread; a correct fit indicates the part meets the specified major diameter and form requirements for a GO condition. This method supports rapid decisions at the bench: accepted parts proceed to assembly, while failures prompt corrective action. For documentation purposes, note the ring’s GTIN and article number during inspection reporting to maintain traceability and audit trails within quality management systems.

Choose the Metav IndustryLine thread ring gauge for dependable, standards‑based GO testing and contact Metav Werkzeuge for tailored advice or order support at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: M315.959.EF
• GTIN: 4054469180403
• Label: Thread Ring Gauge UNEF GO, 15/16 x 20 ANSI B1.1 / 2A

Numbers / Core technical data

• Nominal size: 15/16"
• Threads per inch: 20 tpi
• Tolerance class: 2A
• Weight: 0.4 kg
• Tariff number: 90173000
• eClass: 21170214

Special features / Materials

• Material: gauge steel, hardened
• Thread form: UNEF (Unified Extra Fine)
• Type: GO ring gauge for external threads
• Standard: ANSI/ASME B1.1/B1.2
• Thread direction: right‑hand

FAQ

What does the GO designation mean for this ring gauge?
The GO designation indicates that the ring gauge is intended to check whether an external thread fits within the allowable acceptance limits; the Thread Ring Gauge UNEF GO 15/16‑20, ANSI B1.1 / 2A provides a pass condition for parts manufactured to the matching ANSI external thread specification.

Is this gauge suitable for international compatibility checks?
Yes, the gauge follows ANSI/ASME B1.1 definitions, so the Metav IndustryLine ring is suitable for verifying parts where unified thread interchangeability with US‑based standards is required.

How does the 2A tolerance class affect inspection results?
The 2A tolerance class denotes the external thread tolerance band; a passing fit with the 15/16‑20 GO ring confirms the thread sits within the specified dimensional limits for that class, ensuring expected mating performance with corresponding internal threads.

Can this ring gauge be used for left‑hand threads?
No, this specific item is manufactured as a right‑hand thread GO ring; left‑hand forms require a dedicated gauge made to the same nominal and tolerance specifications.

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