2" UNC NOGO Thread Ring Gauge 2A 4.5 TPI ANSI/ASME B1.1 - Metav IndustryLine

Take advantage of the combination of standard-compliant inspection capability, hardened gauge-steel construction and clear traceability for reproducible thread checks — order the Thread Ring Gauge UNC NOGO 2" x 4.5 (2A) directly via Metav Werkzeuge or ask our consultants if further specification is required.

Thread Ring Gauge UNC NOGO 2" x 4.5 (2A) — Metav IndustryLine

A Thread Ring Gauge UNC NOGO 2" x 4.5 (2A) designed for go/no‑go verification of external UNC threads in accordance with ANSI/ASME B1.1/B1.2 for industrial inspection tasks

• ANSI/ASME B1.1/B1.2 compliant thread gauge
• Hardened gauge steel construction
• Tolerance class 2A for external thread acceptance

Reliable standard compliance for process control

The ring is manufactured to the ANSI/ASME B1.1/B1.2 specification and delivers a consistent method for deciding acceptance or rejection of external UNC threads. As a NOGO member it defines the maximum material limit for a threaded part: a fail on the NOGO indicates oversize material or incorrect thread form. This measurable criterion supports quality plans and reduces subjective judgement during routine inspections, improving reproducibility in batch testing and in-process controls.

Robust construction for regular workshop use

Made from hardened gauge steel, the gauge resists wear and maintains its functional limit over repeated cycles, which preserves inspection integrity and reduces recalibration frequency. The solid construction and ergonomic ring form allow quick engagement with external threads, speeding up throughput in the workshop. Mass and balance support stable handling; the design suits standard production environments where durability and repeatable contact geometry matter.

Clear function and traceability for audits

The 2" nominal size with pitch 4.5 and tolerance 2A is expressly intended for external UNC thread verification; the NOGO function helps ensure non‑conforming parts are identified before assembly. Markings and trace data (including SKU) facilitate traceability in quality records and audits. Where statistical process control is used, this fixed‑limit tool provides a simple go/no‑go output that integrates with sampling plans and reduces measurement ambiguity on the shop floor.

Choose the Metav IndustryLine ring gauge for consistent, standard‑based thread inspection — contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or +49 2822 7131930 to confirm suitability and place an order.

Technical data

• Article number: M315.997
• GTIN: 4054469181226
• Weight: 0.9 kg
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2

Dimensional data

• Nominal diameter: 2"
• Pitch: 4.5
• Tolerance class: 2A
• Tariff number: 90173000

Special features

• Type: UNC NOGO thread ring gauge
• Use: External thread acceptance checking
• Category: Gauges / Lehren (thread gauges)
• SKU: M315.997

FAQ

What is the primary purpose of this thread ring gauge?
The Thread Ring Gauge UNC NOGO 2" x 4.5 (2A) is intended to perform go/no‑go checks on external UNC threads to determine whether parts meet the specified maximum material and form limits.

Which standard does this gauge follow?
This ring gauge is manufactured to ANSI/ASME B1.1/B1.2 and therefore provides a standardised acceptance criterion for UNC threads.

What does NOGO mean in practical terms?
A NOGO ring checks the maximum material condition; if the part enters the NOGO, the external thread is oversize or malformed and must be rejected or reworked.

What material is the gauge made from and how does that affect its use?
The gauge is made of hardened gauge steel, which enhances wear resistance and longevity, maintaining accurate limits over extended use in production environments.

How is the gauge identified for traceability?
Identification is provided via the SKU M315.997 and GTIN 4054469181226, which should be recorded alongside inspection results for audit trails.

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