No. 2 56 TPI Thread Plug Gauge UNC 2B, Hardened Gauge Steel, ANSI/ASME B1.1/B1.2 - Metav IndustryLine

Take advantage of the combination of hardened gauge steel, clear compliance with ANSI/ASME B1.1 and a defined 2B tolerance to secure reproducible thread checks in production and inspection. Order the gauge directly via Metav Werkzeuge or consult our technical advisers for specification support.

Thread plug gauge UNC No.2 x 56 – 2B tolerance, ANSI/ASME B1.1 (Metav IndustryLine)

A thread plug gauge UNC No.2 x 56 for verification of internal UNC threads, designed for workshop and production inspection where standard compliance and durability are required

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 standard
• UNC No.2 x 56 thread form
• Tolerance class 2B assurance

Durable construction for dependable repeatability

The plug is manufactured from hardened gauge steel, providing high wear resistance and dimensional stability under repeated use. This robust material choice keeps the effective gauge geometry stable over many inspection cycles, reducing rework and downtime. As a result, the device supports repeatable inspection routines and maintains a consistent fit assessment for internal UNC threads with minimal recalibration needs.

Standards compliance that supports quality control

Designed to the ANSI/ASME B1.1 thread form and specified as UNC No.2 x 56 with tolerance class 2B, the gauge delivers a verifiable reference against common Unified Thread standards. The specified 2B tolerance indicates a medium internal fit suitable for general assembly and machining checks, enabling reliable go/no‑go decisions in incoming inspection, in‑process checks and final quality gates. The clear standard alignment simplifies documentation and audit traces.

Efficient integration in workshop and production checks

Compact and straightforward to use, this thread plug gauge fits into established inspection benches and handheld kits alike. Its nominal size No. 2 and 56 tpi configuration make it directly applicable for small‑format UNC fastenings commonly found in instrumentation, small assemblies and maintenance tasks. When combined with systematic inspection procedures, the gauge helps to reduce assembly failures and improves first‑pass yield, offering practical efficiency gains on the shop floor.

For guaranteed thread verification with Metav IndustryLine quality, contact Metav Werkzeuge for ordering and technical advice: info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: M315.912
• Label: Gewinde-Lehrdorn UNC, Nr. 2 x 56 ANSI B1.1 / 2B
• GTIN: 4054469179346
• Material: gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2

Facts

• Size: No. 2
• Threads per inch: 56 tpi
• Weight: 0.1 kg
• Zolltarifnummer: 90173000

Special features

• Tolerance class: 2B
• Application: internal UNC thread verification
• Categories: Gauge pins; Gauges
• SKU: M315.912

FAQ

What is the primary use of this plug gauge?
The thread plug gauge UNC No.2 x 56 is used for verification of internal UNC threads, providing a simple go/no‑go check for conformity to the ANSI/ASME B1.1 specification.

Which tolerance and standard does the gauge follow?
This gauge is manufactured to ANSI/ASME B1.1/B1.2 and specified to tolerance class 2B, giving a medium internal fit suitable for general assembly and inspection tasks.

Is the material suitable for repeated workshop use?
Made from hardened gauge steel, the plug gauge provides good wear resistance and dimensional stability for frequent verification cycles, extending usable life in routine inspection settings.

Can this gauge be used for other thread series?
The instrument is specifically formed for UNC No.2 x 56 and is intended for internal UNC thread checking; other thread series require gauges matched to their respective forms and standards.

How should the gauge be maintained to preserve accuracy?
Clean the gauge after use, store it protected from moisture and mechanical damage, and include it in regular inspection intervals to confirm continued conformity; traceability is supported by the SKU M315.912 and GTIN for inventory and calibration records.

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