5/16" UNC Thread Go Ring 18 Tpi ANSI B1.1/B1.2 2A, Hardened Gauge Steel - Metav IndustryLine

Benefit from precise GO checking, hardened gauge steel construction and conformity with ANSI/ASME B1.1 for fast, reproducible thread inspection. The combination of robust material and standard compliance supports consistent quality control and reduces rework. Order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread ring gauge UNC GO, 5/16 x 18 ANSI/ASME B1.1 / 2A — precision GO gauge for UNC external threads

Thread ring gauge UNC GO, 5/16 x 18 ANSI/ASME B1.1 / 2A is a purpose‑made GO ring for rapid acceptance checks of 5/16"‑18 UNC external threads in production and incoming‑inspection environments

• Hardened gauge steel construction
• ANSI/ASME B1.1 thread standard compliance
• Tolerance class 2A GO checking
• Suitable for 5/16"‑18 UNC threads

Consistent GO verification for production throughput

A GO ring gauge provides a straightforward, repeatable method to verify external threads against the relevant standard. Constructed from hardened gauge steel, this GO ring resists wear and maintains dimensional stability under frequent use, which helps to keep rejection rates low and production flowing. Compliance with ANSI/ASME B1.1 ensures compatibility with industry specifications and supports audit‑ready inspection procedures.

Minimise inspection time with a dedicated GO check

Using a dedicated GO ring avoids interpretation and speeds up tactile checks at the workbench or inspection station. The tolerance class 2A designation corresponds to the American Unified Thread Standard for external threads and confirms the acceptance limit for the mating part. For shops where fast, unambiguous checks are essential, a purpose‑built GO ring reduces cycle time while delivering clear go/no‑go criteria for operatives and quality staff.

Durable design and simple integration into QC workflows

The ring’s hardened gauge steel body combines longevity with predictable wear characteristics, enabling planned calibration intervals and lower life‑cycle cost. At roughly 0.1 kg, the gauge is easy to handle and can be incorporated into fixture checks or portable inspection kits. The compact form and standard thread designation make it suitable for routine use in metalworking, subcontract machining and incoming inspection of fasteners.

For reliable GO verification choose the Metav IndustryLine gauge — contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930 to discuss the M315.951 and delivery options

Technical data

• Article number: M315.951
• GTIN: 4054469180182
• Label: Thread ring gauge UNC GO, 5/16 x 18 ANSI/ASME B1.1 / 2A
• Material: Hardened gauge steel

Facts

• Thread designation: 5/16" × 18 UNC
• Pitch: 18 tpi
• Tolerance class: 2A
• Weight: 0.1 kg

Special features

• GO gauge for external thread acceptance
• Compliant with ANSI/ASME B1.1/B1.2
• Robust, wear‑resistant hardened steel
• Intended for production and incoming inspection

FAQ

What does GO mean for this ring gauge?
GO indicates that the ring verifies whether an external thread falls within the acceptable maximum material limit; the thread must pass the GO ring to be considered acceptable for mating.

Is this gauge suitable for inspection of mass‑produced fasteners?
Yes, the M315.951 GO ring is designed for repetitive acceptance checks in production environments and for incoming inspection of fasteners manufactured to 5/16"‑18 UNC.

How does the ANSI/ASME B1.1 standard affect use?
Compliance with ANSI/ASME B1.1 means the gauge corresponds to the Unified Thread Standard dimensions and tolerances, allowing consistent checks against recognised industry specifications.

What material and durability can be expected?
The ring is made from hardened gauge steel, providing predictable wear behaviour and long service life under routine inspection cycles.

Does the gauge include traceability details?
The product label and technical data include the SKU M315.951 and GTIN for traceability; calibration and certification details are available on request.

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