1" UNC Thread Plug Gauge 1-8 TPI ANSI B1.1 2B, Hardened Gauge Steel - Metav IndustryLine

Take advantage of the combination of standards compliance, hardened gauge steel and precise 2B tolerance for reliable in‑process inspection. Order the gauge directly via Metav Werkzeuge or request technical advice from our consultants.

Thread plug gauge UNC 1" x 8 – ANSI/ASME B1.1, tolerance 2B (Metav IndustryLine)

The Thread plug gauge UNC 1" x 8 is a precision inspection tool for checking internal Unified threads to the ANSI/ASME B1.1 standard, suitable for workshop and production quality control.

• Thread size 1" x 8 UNC, 8 tpi
• Conforms to ANSI/ASME B1.1 standard
• Hardened gauge steel for wear resistance
• Tolerance class 2B for internal thread checks

Consistent conformity for production inspection

The thread plug gauge verifies internal thread form quickly and reliably, supporting the familiar go/no‑go workflow used in routine inspections. Built to the ANSI/ASME B1.1 specification, the gauge confirms basic parameters such as major diameter and pitch, with the 1" x 8 designation indicating the nominal size and 8 threads per inch (8 tpi). This makes the tool an efficient choice for incoming inspection, process control and final checks where reproducible pass/fail decisions are required.

Durable construction reduces downtime and rework

Manufactured from hardened gauge steel, the device offers high wear resistance, which translates into longer service life and more consistent check dimensions over time. The robust material and heat treatment reduce the frequency of replacement and help maintain repeatability in production environments. Using a gauge with stable surface hardness minimises uncertainty and supports predictable tooling cycles, improving overall process efficiency.

Clear tolerancing for unambiguous results

Tolerance class 2B denotes the internal thread tolerance band under the Unified Thread Standard and is commonly used for general‑purpose, fit‑controlled components. In practice, a 2B classification provides an established balance between manufacturability and assembly fit, making it suitable for components where reliable thread engagement is required without the need for extreme tightness. The plug gauge simplifies conformity assessment by relating directly to these accepted engineering limits.

Seamless integration into quality workflows

The gauge is designed for straightforward incorporation into workshop procedures: it is compact, quick to use and lends itself to frequent checks at the machine or inspection bench. Traceability is supported through clear identification (SKU and GTIN in the technical data), which helps when documenting inspection records. For production teams seeking predictable throughput and fewer stoppages, the gauge offers a practical, standards‑based inspection method that complements statistical process control routines.

Contact Metav Werkzeuge today for delivery and technical advice on this Metav IndustryLine thread plug gauge — phone +49 2822 7131930 or info@metav-werkzeuge.com

Technical data

• Article number: M315.930
• GTIN: 4054469179773
• Mass: 0.45 kg
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2

Facts

• Thread size: 1" x 8
• Thread pitch: 8 threads per inch (8 tpi)
• Tolerance class: 2B

Special features

• Designed for internal thread inspection
• Wear‑resistant hardened finish
• Category: Gauges / Plug gauge

FAQ

What is the primary use of this plug gauge?
The plug gauge is intended for rapid verification of internal UNC threads to ANSI/ASME B1.1; it supports simple go/no‑go checks during incoming inspection and in‑process quality control.

Which thread size and pitch does the gauge check?
This Metav IndustryLine gauge checks a 1" x 8 UNC thread, corresponding to 8 threads per inch (8 tpi).

What does tolerance class 2B mean for practical checks?
Tolerance class 2B defines the acceptable internal thread tolerance band under the Unified Thread Standard and indicates a common, general‑purpose internal thread fit suitable for most assemblies.

Is the gauge suitable for production use and repeated checks?
Yes. Made from hardened gauge steel, the gauge is designed for repeated use with enhanced wear resistance to provide consistent pass/fail decisions in production environments.

How is the gauge identified for traceability?
Identification for documentation is provided via the article number M315.930 and the GTIN 4054469179773, which should be recorded alongside inspection results.

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