No. 2 x 56 UNC Go Thread Ring, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of standardised acceptance testing, long-term durability and compact portability for efficient thread inspection; the combination of hardened gauge steel, ANSI/ASME compliance and tolerance class 2A supports reproducible results on the shop floor. Order the gauge directly via Metav Werkzeuge or consult our specialists for matching inspection equipment.

Thread plug gauge UNC GO No. 2 x 56 (ANSI B1.1 / 2A) — Metav IndustryLine GO inspection gauge, hardened

The Thread plug gauge UNC GO No. 2 x 56 (ANSI B1.1 / 2A) is a hardened GO gauge intended for quick acceptance checks of UNC 56 tpi external threads in production, assembly and incoming inspection.

• Hardened gauge steel construction
• ANSI/ASME B1.1 compliant
• Tolerance class 2A GO verification
• Compact, lightweight inspection gauge

Precision that maintains throughput

A dedicated thread verification tool simplifies pass/fail decisions at the workstation. The GO gauge confirms that an external thread meets the maximum material envelope required by UNC 56 tpi specification; if the gauge enters freely, the thread diameter and form are within tolerance. This rapid check reduces measurement time compared with full coordinate measurement, improving throughput for batch inspection while keeping rejects and rework to a minimum.

Durable construction for repeated use

Manufactured from gauge steel, hardened, the gauge is engineered for wear resistance and consistent performance over many cycles. The robust material ensures dimensional stability under repetitive handling and exposure to typical workshop environments. The lightweight nature (approx. 0.1 kg) makes the gauge easy to carry between machine centres and inspection benches without compromising repeatability.

Standards-based acceptance to avoid disputes

Conformance with ANSI/ASME B1.1/B1.2 and classification as 2A provides an objective basis for contractual inspections and supplier approvals. Using a standard GO gauge streamlines communication with suppliers and customers, because the acceptance criterion is defined by established norms rather than subjective judgement. The standard reference reduces non-conformance discussions and aligns inspection practice across departments.

Practical use and typical applications

The GO-only plug gauge is ideal for fast verification of external UNC threads during production runs, maintenance checks and incoming goods inspections. It is suited to machine shops, assembly lines and service departments where quick Go/No-Go decisions are needed. For complete inspection workflows, the GO gauge may be used alongside corresponding NOGO gauges and conventional measurement tools to document compliance and traceability.

For procurement or expert advice on the Metav IndustryLine thread plug gauge, contact Metav Werkzeuge for a compatibility check or to request a tailored quotation by phone or email.

Technical Data

• Article number: M315.942
• GTIN: 4054469179988
• Label: Gewinde-Lehrring UNC GO, Nr. 2 x 56 ANSI B1.1 / 2A

Facts

• Size: No. 2
• Threads per inch: 56 TPI
• Weight: 0.1 kg

Special features

• Material: Gauge steel, hardened
• Tolerance class: 2A
• Standard: ANSI/ASME B1.1/B1.2

FAQ

What is the primary purpose of this gauge? The thread plug gauge UNC GO No. 2 x 56 (ANSI B1.1 / 2A) is used to verify that external UNC threads with 56 tpi conform to the GO acceptance limits defined by the standard.

Does the gauge check pitch and major diameter? Yes, the GO gauge assesses the combined form of thread pitch and major diameter to confirm the thread lies within the permissible envelope for a GO acceptance.

Is the gauge suitable for production use? The Metav IndustryLine GO gauge is designed for repetitive shop-floor checks; its hardened construction supports repeated use in production and inspection environments.

What does tolerance class 2A mean for inspections? Tolerance class 2A denotes the standard external thread tolerance band for UNC threads; using a 2A GO gauge ensures the thread meets that common industrial fit.

Can this gauge be used as the only inspection tool? The GO plug gauge offers rapid accept/reject decisions; however, for full documentation or to resolve borderline cases a complementary NOGO gauge or dimensional measurement may be appropriate.

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