1 3/4" Thread Ring Gauge UNC GO 5 TPI ANSI B1.1 2A - Metav IndustryLine

Taking advantage of precise ANSI/ASME B1.1 compliance, hardened gauge steel construction and a clearly defined 2A tolerance yields reliable GO verification for UNC external threads; order the ring gauge directly via Metav Werkzeuge or consult our specialists for application guidance.

Thread ring gauge UNC GO, 1 3/4" x 5 TPI, ANSI/ASME B1.1 – 2A (Metav IndustryLine)

A Thread ring gauge UNC GO, 1 3/4" x 5 TPI, 2A designed for fast, repeatable acceptance testing of external UNC threads in workshop and production environments

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 thread standard
• Tolerance class 2A for GO verification
• Ideal for workshop and production control

Assured conformity for UNC external threads

The primary benefit of this ring gauge is standards-based verification: manufactured to match ANSI/ASME B1.1/B1.2, the gauge provides a direct pass/fail check for external UNC threads at the specified nominal size and pitch. The 2A tolerance class corresponds to the accepted external-thread allowance for general-purpose UNC threads, making the tool suitable for incoming inspection and process control where conformity to the standard is mandatory. Because the instrument is a GO ring gauge, it confirms that external threads fall within the lower limits of the tolerance zone, enabling clear go/no-go decisions and reducing interpretation time during routine checks.

Robust design for repeatable shop-floor use

Constructed from hardened gauge steel, the ring is engineered for longevity under frequent handling and contact with workpieces. The choice of hardened material improves wear resistance and maintains the thread form over long service intervals, which supports consistent repeatability in inspection results. The compact form and balanced mass make the gauge straightforward to seat on the thread, while the solid construction reduces the risk of deformation that could otherwise compromise accuracy. These characteristics help maintain stable measurement quality throughout production runs, reducing rework and process disruption.

Practical integration into quality workflows

As a metrology instrument intended for production control, the ring gauge facilitates rapid throughput in standard inspection routines. The nominal size of 1 3/4" with a 5 TPI pitch aligns with common UNC specifications used in heavy‑duty fastenings and fittings, so the gauge directly supports applications in mechanical assembly and maintenance operations. Labelling and identification via GTIN ensure traceability in inventory and calibration records, and the compact acceptance check provided by the GO gauge shortens inspection cycles without sacrificing reliability.

Durable specification that supports procurement and supply security

The combination of a prescribed standard (ANSI/ASME), hardened gauge steel material and clear tolerance designation makes this ring gauge a dependable component of a calibrated inspection toolkit. Suitable for use at the workshop bench and on the production line, the instrument helps maintain process stability and supports documented quality procedures. Sourcing through Metav IndustryLine ensures availability and continuity of supply from a European quality filter that serves industry and trade.

For a reliable GO check of UNC external threads, request the Metav IndustryLine ring gauge (SKU M315.966) from Metav Werkzeuge in Emmerich for secure delivery and technical advice via info@metav-werkzeuge.com or phone +49 2822 7131930

Technical data

• Article number: M315.966
• GTIN: 4054469180571
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Type: Thread ring gauge GO, 2A
• Nominal size: 1 3/4"
• Thread pitch: 5 TPI
• Weight: 0.8 kg
• Tariff number: 90173000

Facts

• Nominal diameter: 1 3/4"
• Thread pitch: 5 TPI
• Tolerance class: 2A
• Weight: 0.8 kg

Special features

• Hardened gauge steel for wear resistance
• Conforms to UNC thread form per ANSI/ASME
• GO ring gauge for clear acceptance testing
• Category: Gauges / Measuring tools

FAQ

What thread standard does this ring gauge check?
The ring checks UNC external threads in accordance with ANSI/ASME B1.1/B1.2; the instrument is specified for the UNC form and verified at the labelled size.

What does tolerance class 2A indicate for external threads?
Tolerance class 2A denotes the standard external-thread allowance under ANSI/ASME B1.1; the GO ring confirms that threads meet the lower-limit acceptance for that class.

Is this gauge suitable for routine production inspection?
Yes, the hardened construction and clear GO/NO-GO function make the gauge appropriate for shop-floor and production‑line acceptance testing.

How is the thread pitch expressed on the gauge?
The pitch is given as 5 TPI, indicating five threads per inch for the specified nominal diameter.

What material is used and how does that affect durability?
Manufactured from hardened gauge steel, the ring offers improved wear resistance and sustained thread form retention under frequent use.

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