No. 4 x 48 UNF Thread Go/No-Go Ring Gauge, Right-Hand, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of a purpose‑built no‑go thread ring that combines strict ANSI conformity, hardened gauge steel, and a clear 2A tolerance for reliable in‑process inspection. Order directly via Metav Werkzeuge or consult the Metav team for application advice and supply from Emmerich.

Gewinde‑Lehrring UNF NOGO, No. 4 × 48 (ANSI/ASME B1.1 / 2A) — no‑go thread ring gauge for UNF inspection

Gewinde‑Lehrring UNF NOGO, No. 4 × 48 ANSI B1.1 / 2A is designed for go/no‑go control of UNF threads in production and incoming inspection, offering a compact, hardened gauge for repeatable results in workshop or production environments.

• ANSI/ASME B1.1/B1.2 compliant
• No. 4 × 48 UNF thread specification
• No‑go ring gauge, tolerance class 2A
• Hardened gauge steel construction

Ensure thread conformity with a dedicated no‑go control

A dedicated no‑go ring gauge is the fastest way to verify that external UNF threads do not exceed the upper tolerance limit. The supplied ring, manufactured in hardened gauge steel, resists wear and preserves the 2A tolerance over many inspection cycles, which reduces false rejects and protects process throughput. This check is particularly effective where repeatability and speed are essential, such as batch release or final inspection.

Compact specification tailored for UNF No. 4 × 48 applications

The ring matches the No. 4 × 48 UNF standard defined in ANSI/ASME B1.1, ensuring dimensional compatibility with mating components. The gauge’s compact format keeps handling simple on the shop floor while delivering a clear binary result: pass or fail. Using a purpose‑built thread ring accelerates decision making in production and eliminates ambiguity compared with visual checks or ad‑hoc measurement.

Built for routine inspection and process reliability

Constructed from hardened gauge steel, the gauge offers high surface hardness and dimensional stability under normal shop conditions. The right‑hand thread configuration corresponds to standard external fasteners and simplifies alignment during checking. Regular use of such a gauge supports quality assurance by catching oversize threads before assembly, reducing rework and downstream failures.

For consistent thread control trust Metav IndustryLine — contact Metav Werkzeuge in Emmerich for expert advice and prompt supply on this no‑go ring gauge

Technical data

• Article number: M315.974.F
• GTIN: 4054469180670
• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Type: No‑go thread ring gauge

Data

• Thread: No. 4 × 48 UNF
• Threads per inch: 48 tpi
• Tolerance class: 2A
• Weight: 0.1 kg
• Mass/Size: No. 4

Special features

• Right‑hand thread
• Hardened construction
• Designed for production and incoming inspection
• Category: thread gauge / no‑go ring

FAQ

What is the intended use of this no‑go ring gauge?
The no‑go ring gauge is used to check that external UNF threads do not exceed the allowable maximum size; the Gewinde‑Lehrring UNF NOGO, No. 4 × 48 is suitable for production and incoming inspection.

Which standard does the gauge follow?
The ring is manufactured to ANSI/ASME B1.1, matching the No. 4 × 48 UNF specification and the 2A tolerance class for external threads.

Is the gauge suitable for everyday shop use?
Yes. The hardened gauge steel construction is intended for routine shop inspection and offers good wear resistance for frequent checks.

How is a failed thread identified with this gauge?
If an external thread does not enter the no‑go ring, it is within tolerance; if the thread enters the ring, the Gewinde‑Lehrring indicates an oversize or out‑of‑tolerance condition.

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