1/2" 13 TPI UNC Go Thread Ring Gauge ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of hardened gauge steel, ANSI/ASME B1.1/B1.2 conformity and tolerance class 2A for fast, reproducible verification of external UNC threads; order the gauge directly via Metav Werkzeuge or consult the technical team for selection support.

Go thread ring gauge UNC GO, 1/2 x 13 ANSI/ASME B1.1 – 2A (Metav IndustryLine)

a Go thread ring gauge UNC GO, 1/2 x 13 ANSI/ASME B1.1 – 2A designed for quick go/no-go inspection of external UNC threads in production and incoming inspection

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1/B1.2
• Tolerance class 2A, UNC 1/2-13

Reliable thread verification for production control

The Go thread ring gauge UNC GO, 1/2 x 13 ANSI/ASME B1.1 2A serves as a direct, unambiguous check for external UNC threads: a simple go/no-go outcome removes interpretation from routine inspections and speeds up throughput. As a plain-limit gauge, it provides a rapid acceptance criterion that is compliant with the referenced standard, supporting consistent quality control and reduced rework. The directness of a ring gauge helps maintain production rhythm while safeguarding assembly fit.

Durable construction for repeatable measurements

Manufactured from hardened gauge steel, the ring offers wear resistance and a long service life under regular workshop use. The tolerance class 2A corresponds to the established external thread limits for UNC threads, ensuring that parts passing the gauge will meet typical assembly and interchangeability demands. The compact mass (approx. 0.2 kg) and robust material keep handling straightforward while preserving the gauge geometry necessary for repeatable results across many cycles.

Integration into inspection routines and supplier control

Designed for practical metrology workflows, this GO ring is ideal for incoming inspection, final checks and in-process sampling where quick decision-making is essential. The item is traded as M315.954 and carries the international identifier GTIN 4054469180250, easing traceability in procurement and inventory systems. Backed by Metav’s position as a precision partner in Emmerich, the gauge complements a broader quality strategy that emphasises accessibility of accurate tools for industry and specialist trades.

For reliable thread verification, request the Metav IndustryLine GO ring (M315.954) via Metav Werkzeuge—technical advisors are available at info@metav-werkzeuge.com or +49 2822 7131930 to assist with specification and procurement.

Technical data

• Article number: M315.954
• GTIN: 4054469180250
• Weight: 0.2 kg
• Material: Hardened gauge steel
• Label: Go thread ring gauge UNC GO, 1/2 x 13 ANSI B1.1 / 2A

Numbers / Core technical data

• Size: 1/2"
• Thread pitch: 13 tpi
• Tolerance class: 2A
• Tariff number: 90173000

Special features / Versions

• Standard: ANSI/ASME B1.1/B1.2
• Type: GO ring gauge for external threads
• Condition: good
• Category: Gauges / Thread gauges

FAQ

What does "GO" mean on a ring gauge?
The GO designation indicates a limit gauge that must fit the part; for this UNC GO ring the GO condition confirms the external thread is within the allowable acceptance limits defined by ANSI/ASME B1.1.

Which standard does this thread gauge follow?
This ring gauge complies with ANSI/ASME B1.1/B1.2, ensuring the measurement limits and thread form meet the recognised UNC specifications for external threads.

What is the meaning of tolerance class 2A?
Tolerance class 2A denotes the external thread tolerance band for UNC threads under ANSI/ASME rules; parts that pass a 2A GO gauge are expected to assemble properly with corresponding internal threads.

Is the gauge suitable for workshop use or only for laboratory inspection?
The gauge is manufactured in hardened gauge steel and is intended for routine workshop and production inspection, offering practical durability for frequent go/no-go checks.

How is the product identified for ordering and traceability?
This item is listed as M315.954 with GTIN 4054469180250, facilitating straightforward ordering and inventory tracking.

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