3/8" UNC Thread Ring Gauge 3/8 x 16 GO, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of precise thread inspection through hardened gauge steel and ANSI/ASME compliance; the GO ring ensures fast, unambiguous acceptance testing for UNC external threads. Order the ring directly via Metav Werkzeuge or request consultation from our specialists to integrate it into existing quality routines.

Thread GO Ring UNC 3/8‑16 — ANSI/ASME B1.1, hardened gauge steel (Metav IndustryLine)

The Thread GO Ring UNC 3/8‑16 is a compact precision check gauge for rapid verification of external UNC threads to ANSI/ASME B1.1 with a 2A tolerance class.

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 standards
• Tolerance class 2A for external threads
• Compact 3/8‑16 UNC check ring

Ensure correct parts leave the shop first time

The GO ring is designed for rapid thread verification, providing a clear pass condition for external UNC threads. Manufactured from hardened gauge steel, the check ring resists wear and retains dimensional stability over repeated use, which reduces rejects and rework in production. Conformity to ANSI/ASME B1.1 means the gauge directly reflects the tolerancing system most commonly used for UNC fasteners, allowing straightforward integration into inspection routines and documentation chains. This combination of material and standard compliance improves throughput and traceability.

Reduce inspection time with unambiguous checking

Using a GO ring simplifies the inspection process: if the ring fits, the external thread meets the acceptable form for a 2A class UNC thread; if it does not fit, the thread requires correction. This binary check cuts decision time on the shop floor and supports consistent quality decisions across operators. The ring’s 3/8‑16 pitch and compact geometry make it suitable for fastener production lines, maintenance stations and bench inspections where speed and reproducibility are priorities. The item listed as M315.952 offers a practical, low-mass gauge (0.1 kg) that is easy to handle and store.

Practical fit for workshop and production environments

The compact format and robust construction make this check ring suited to machine shops, assembly lines and quality control benches where repeatability is required. As a dedicated thread GO ring, it eliminates interpretation error associated with visual inspection and provides a direct mechanical acceptance criterion for external threads manufactured to UNC specifications. The ring is marked and traceable by GTIN for inventory control, and the construction material ensures long service life under standard inspection loads, supporting reliable process control in everyday industrial use.

Choose Metav IndustryLine’s hardened UNC GO ring for dependable thread checks and contact Metav Werkzeuge for purchasing guidance or integration advice via +49 2822 7131930 or info@metav-werkzeuge.com

Technical data

• Article number: M315.952
• GTIN: 4054469180205
• Label: Thread GO Ring UNC GO, 3/8 x 16 ANSI B1.1 / 2A

Facts

• Size: 3/8"
• Pitch: 16 tpi
• Tolerance class: 2A
• Weight: 0.1 kg

Special features

• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Type: Thread GO ring
• Application: verification of external UNC threads

FAQ

What does "GO" signify on the ring?
The GO designation indicates a gauge used to verify that an external thread is within the maximum material limit; the Thread GO Ring UNC 3/8‑16 confirms acceptance when the ring fits the tested thread.

Is this ring compatible with standard UNC fasteners?
Yes, the ring is manufactured to ANSI/ASME B1.1 dimensions for UNC threads and is suitable for verifying external threads to the 2A tolerance class.

What material is used and how durable is it?
Constructed from hardened gauge steel, the check ring offers high wear resistance and dimensional stability for repeated inspection cycles.

What does tolerance class 2A mean for external threads?
Tolerance class 2A is the common external thread tolerance for UNC fasteners, balancing manufacturability and fit; the ring verifies conformance to that class.

Where is this gauge typically used?
Typical applications include machine shops, fastener manufacturers, maintenance departments and quality control benches where quick, repeatable checks of external UNC threads are required.

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