No. 3 x 56 UNF Thread Go Plug Gauge, Right-Hand, ANSI/ASME B1.1 2B - Metav IndustryLine

The combination of hardened gauge steel and conformity to ANSI/ASME B1.1 ensures fast, reliable verification of internal UNF threads; the 2B tolerance gives consistent fit control and reduces assembly rework. Order the thread inspection tool directly via Metav Werkzeuge or consult our specialists for application advice.

Thread plug gauge UNF No. 3 x 56 (ANSI/ASME B1.1) – 2B, right-hand · Metav IndustryLine

A thread plug gauge UNF No. 3 x 56 for quick, repeatable verification of internal UNF threads in production and quality control environments, complying with ANSI/ASME B1.1/B1.2 and supplied in a hardened gauge-steel finish.

• ANSI/ASME B1.1 compliant thread form
• Hardened gauge steel construction
• Tolerance class 2B for internal thread fit

Reliable conformity for repeatable assemblies

The gauge is produced from hardened gauge steel, which provides long-term dimensional stability and resistance to wear under frequent use. Conformity with ANSI/ASME B1.1/B1.2 guarantees that the thread profile matches accepted UNF standards, so parts verified with this tool will mate predictably with external threads manufactured to the same norm. Using a standardised inspection piece reduces rejects and supports a consistent production flow.

Practical inspection that saves time on the shop floor

Designed for straightforward go/no-go-style checks, this plug gauge accelerates routine quality control without complex setup. The right-hand thread and No. 3 x 56 specification make it suitable for fine-pitch UNF internal threads often found in precision assemblies. The compact mass and robust construction allow fast manual handling while maintaining the necessary stiffness for reliable tactile evaluation, helping to avoid costly rework and downtime.

Durable, traceable tool for industrial environments

Finished in hardened steel and supplied with clear identification (SKU M315.913.F, GTIN 4054469179377), the gauge is engineered for repeated use in workshop and production settings. The tolerance class 2B ensures internal threads meet the commonly expected fit for functional assemblies. The tool’s compliance with trade classifications is documented by its tariff number, supporting procurement and customs processing when required.

Request application support from Metav Werkzeuge or order this Metav IndustryLine thread plug gauge for consistent, standards-based thread inspection in your workshop or production line.

Technical details

• SKU: M315.913.F
• GTIN: 4054469179377
• Tariff number: 90173000

Facts

• Size designation: No. 3
• Threads per inch: 56 tpi
• Tolerance: 2B
• Weight: 0.1 kg

Special features

• Material: hardened gauge steel
• Thread direction: right-hand
• Standard: ANSI/ASME B1.1/B1.2
• Category: Gauges — thread inspection

FAQ

What is the primary use of this gauge?
The thread plug gauge is intended for quick verification of internal UNF thread form and size; the Metav IndustryLine plug gauge No. 3 x 56 confirms whether an internal thread conforms to ANSI/ASME B1.1 and the 2B fit requirement.

How does tolerance class 2B affect fitting?
Tolerance class 2B denotes the standard internal thread fit under ANSI/ASME B1.1; using the M315.913.F plug gauge ensures internal threads fall within that acceptable range for reliable engagement with mating external threads.

Is the gauge suitable for high-volume inspection?
Yes, the hardened gauge-steel construction is selected for wear resistance and dimensional stability, making the gauge appropriate for repeated manual checks on production lines.

Which standard does this gauge check against?
This plug gauge verifies internal thread geometry and size against ANSI/ASME B1.1/B1.2, ensuring compatibility with parts specified to those standards.

How is the gauge identified for procurement and traceability?
The tool is identified by SKU M315.913.F and GTIN 4054469179377, and it is listed under tariff number 90173000 for customs and inventory purposes.

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