9/16" Thread Ring Gauge UNF 18 TPI Go, Right-Hand, Hardened Gauge Steel, ANSI B1.1/B1.2 - Metav IndustryLine

Take advantage of the combination of precision compliance, hardened construction, and reliable shop‑floor durability to keep thread inspections fast and reproducible; ideal for production control and incoming goods inspection. Order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread ring gauge UNF GO, 9/16"-18 ANSI/ASME B1.1 — Go gauge by Metav IndustryLine

The Thread ring gauge UNF GO, 9/16"-18 ANSI/ASME B1.1 2A is a purpose-made go gauge for quick verification of external UNF threads in production and inspection environments.

• ANSI/ASME B1.1 compliant GO gauge
• Hardened gauge steel construction
• Tolerance class 2A precision
• Right-hand thread 9/16"-18

Reliable verification that keeps production moving

A GO gauge is the fastest way to confirm whether an external thread falls within the allowable limits set by the standard; the ring presented here is designed for UNF 9/16"-18 threads and is built to the ANSI/ASME B1.1 specification. Using a standardised check instrument like this reduces ambiguity during inspection, shortens cycle times and prevents parts with undersize major diameters or incorrect lead forms from continuing down the line. The result is fewer stoppages, less rework and a more predictable quality flow.

Conformance and traceability for quality systems

The ring complies with the 2A tolerance class, providing the appropriate fit criteria for components intended to mate with internal 2B threads. By applying an inspection tool that matches the relevant normative requirements, suppliers and manufacturers demonstrate process control that aligns with many quality management systems. This helps to legitimise acceptance criteria during audits and simplifies communication between production, quality and purchasing teams.

Robust material and handling to reduce downtime

Manufactured from hardened gauge steel, the ring resists wear from repetitive engagement and retains its functional dimensions for extended service life. The compact, balanced form and modest mass make handling straightforward at the inspection bench, while the right‑hand thread orientation matches common production parts. These characteristics mean less frequent replacement, fewer stoppages for gauge changeover and a smaller total cost of ownership across high‑volume applications.

Practical use cases on the shop floor

This gauge suits end‑of‑line checks, incoming goods inspection and sampling within batch inspections where quick go/no‑go decisions are required. Typical applications include fasteners, shafts with threaded ends and small assemblies in automotive, machinery and maintenance operations. Operators will find the tool intuitive to use: engagement should be smooth without forcing, confirming a go result by hand feel and light rotation. For documentation and lot control, record the article number and GTIN on inspection reports to ensure traceability.

Choose the Metav IndustryLine UNF GO ring gauge for standards‑based thread control and contact Metav Werkzeuge for fast supply from Emmerich and application advice.

Technical data

• Article number: M315.955.F
• GTIN: 4054469180304
• Designation: Thread ring gauge UNF GO, 9/16"-18 2A
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Condition: Good

Numbers / Core technical data

• Size: 9/16"
• Thread pitch: 18 tpi
• Tolerance class: 2A
• Weight: 0.2 kg
• Tariff number: 90173000

Special features

• Right-hand thread
• GO gauge for external threads
• Hardened gauge steel construction
• Categories: gauge pins, gauges
• Compliance: ANSI/ASME B1.1/B1.2

FAQ

What thread size and standard does this gauge check?
The thread ring gauge checks UNF 9/16"-18 external threads and is manufactured to the ANSI/ASME B1.1/B1.2 standard for GO verification.

Is this a GO or NO‑GO gauge?
This is a GO gauge: the Metav IndustryLine ring confirms that an external thread is within the lower limit and form required for mating with a 2B internal thread.

What material is the gauge made from and why does it matter?
The gauge is made of hardened gauge steel, which gives wear resistance and dimensional stability during repetitive inspections, helping to maintain reliable checking performance over time.

How is the tolerance class specified for this gauge?
The instrument is made for tolerance class 2A, the commonly used external thread tolerance for general mechanical assemblies that mate with 2B internal threads.

Can this gauge be used on production lines for rapid checks?
Yes, the compact design and hardened construction make it suitable for fast shop‑floor checks, incoming inspection and sampling routines where quick go/no‑go results are required.

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