1/2" Thread Go Gauge UNC 13 TPI, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of a hardened gauge steel construction together with ANSI/ASME B1.1 conformity to secure repeatable thread checks and minimise production rejects; the No‑go function and 2A tolerance ensure fast go/no‑go decisions on UNC 1/2‑13 threads. Order the thread gauge directly via Metav Werkzeuge or ask our consultants if needed.

Thread Ring Gauge UNC No‑Go, 1/2‑13, ANSI B1.1 / 2A by Metav IndustryLine

A precision No‑Go thread ring gauge for verifying 1/2‑13 UNC external threads to ANSI/ASME B1.1 standards, built for shop‑floor and quality‑control use

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 threading standard
• No‑go function for 1/2‑13 UNC threads
• Tolerance class 2A for repeatable assessment

Fast, standards‑based thread verification for production control

The ring is designed as a No‑Go inspection tool for UNC threads and provides a rapid binary check that supports throughput in assembly and machining processes. Manufactured from hardened gauge steel, the design resists wear and preserves the measuring profile over many cycles, which reduces the need for frequent replacement and the risk of false acceptance. Compliance with ANSI/ASME B1.1 ensures measurements are traceable to the industry reference, allowing integration into documented quality procedures and minimising ambiguity in acceptance criteria.

Clear enforcement of thread tolerances to reduce rework

Using a No‑Go ring with 2A tolerance offers a deterministic way to detect oversize or out‑of‑tolerance external threads before parts reach assembly. The simple pass/fail principle shortens inspection times and concentrates attention on corrective action for production feeds that exceed acceptable limits. This approach contributes directly to cost control: fewer assemblies rejected downstream, faster fault isolation and less time spent on subjective gauging. The measurable nature of the check supports statistical process control and clear non‑conformity reporting.

Practical features for workshop and quality labs

The gauge is configured for the common UNC size 1/2‑13, with the No‑Go function tailored to external threads. The compact, robust construction suits both the shop floor and bench inspection; the material selection and finish prioritise surface integrity of the thread profile. Lightweight handling and unambiguous use make the tool accessible to operators with varying experience, while the conformity to recognised standards supports auditability and supplier communication. For parts subject to batch testing, the ring enables quick sorting without elaborate setup or measuring fixtures.

For reliable thread inspection specify Metav IndustryLine and contact Metav Werkzeuge for tailored advice and rapid supply from Emmerich

Technical data

• Article number: M315.984
• GTIN: 4054469180892
• Customs tariff: 90173000

Data

• Size: 1/2"
• Pitch: 13 threads per inch
• Tolerance class: 2A
• Weight: 0.2 kg

Special features

• Material: hardened gauge steel
• Type: No‑Go ring gauge for external threads
• Standard: ANSI/ASME B1.1/B1.2
• Category: Gauges / Thread inspection

FAQ

What is the gauge used for?
The No‑Go ring gauge is used to check external 1/2‑13 UNC threads; the Metav IndustryLine No‑Go ring provides a fast pass/fail verdict to confirm whether threads exceed the allowable limit.

Does this ring conform to recognised standards?
Yes; the gauge is manufactured to meet ANSI/ASME B1.1 threading standards and is intended for use where standardised acceptance criteria are required.

Which tolerance does the ring represent?
The tool follows 2A tolerance for external threads, designed to detect oversize conditions in UNC 1/2‑13 threads.

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