3/4" 20 TPI UNEF Thread Go/No-Go Ring Gauge Right-Hand, Hardened Gauge Steel, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of a hardened, standards‑compliant verification tool that speeds up go/no‑go checks and reduces rework: the ring gauge combines hardened gauge steel construction with ANSI/ASME B1.1/B1.2 conformity for reliable pass/fail assessment at the shop floor. Order directly via Metav Werkzeuge or consult the team for specification advice.

UNEF No‑Go Thread Ring Gauge, 3/4‑20 ANSI/ASME B1.1 — tolerance 2A (Metav IndustryLine)

The UNEF No‑Go Thread Ring Gauge, 3/4‑20 ANSI/ASME B1.1, tolerance class 2A is a hardened ring gauge designed for rapid verification of external threads in industrial production and incoming inspection.

• Hardened gauge steel construction
• ANSI/ASME B1.1/B1.2 conformity
• No‑Go check for 3/4‑20 UNEF external threads

Fast, unambiguous go/no‑go verification for external threads

A No‑Go ring gauge provides an immediate binary check that separates acceptable parts from those that require rework. Manufactured from hardened gauge steel, this ring gauge is intended for repeated use across production batches where speed and repeatability matter. The tool's No‑Go function ensures that threads exceeding the maximum material condition are detected instantly, cutting down on measurement time compared with full-form thread measurement and lowering the rate of downstream failures. For workshops handling fastened assemblies to ANSI/ASME B1.1/B1.2 standards, this approach reduces inspection bottlenecks while maintaining clear quality gates.

Robust construction for repeatable shop‑floor inspection

The ring gauge’s hardened material and compact form offer dimensional stability under frequent handling. The tolerance class 2A designation reflects industry practice for external threads and aligns the gauge with common production tolerances; this makes the tool suitable for routine quality control and supplier incoming inspections. The right‑hand thread configuration corresponds to typical fastener types and avoids ambiguity during assessment. Low maintenance and straightforward handling mean operators can perform multiple checks per minute, improving throughput without sacrificing reliability.

Standards compliance and integration into quality workflows

Conformity with ANSI/ASME B1.1/B1.2 ensures that the gauge measures against recognised thread definitions and flank forms, simplifying documentation and audit trails. As a No‑Go ring for 3/4‑20 UNEF threads, the gauge supports fast decision‑making in assemblies where a single non‑conforming fastener can cause rework or warranty exposure. The compact inspection method is ideal for production lines, assembly benches and incoming goods areas, enabling clear pass/fail records to be kept as part of standard quality procedures. Traceable identifiers such as article number and GTIN facilitate inventory and calibration tracking within a quality management system.

Choose Metav IndustryLine’s precision No‑Go ring gauge for secure, efficient thread control — contact Metav Werkzeuge in Emmerich for expert advice and supply from the European quality filter.

Technical Data

• Article number: M315.987.EF
• GTIN: 4054469180991
• SKU: M315.987.EF
• Label: UNEF No‑Go Thread Ring Gauge, 3/4 x 20 ANSI B1.1 / 2A

Facts

• Size: 3/4"
• Pitch: 20 TPI
• Weight: 0.4 kg
• Tolerance class: 2A

Special features

• Material: gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Thread direction: right‑hand thread
• Function: No‑Go ring gauge for external threads
• ECLASS: 21170214

FAQ

How is conformity to standards ensured with this ring gauge?
The No‑Go ring gauge is manufactured to represent the limiting dimensions defined in ANSI/ASME B1.1/B1.2; Metav IndustryLine ring gauges are produced to these tolerances so inspections compare directly to the standard thread form.

Can this gauge be used in serial production for quick checks?
Yes. The hardened construction and No‑Go design enable rapid pass/fail checks on 3/4‑20 UNEF external threads without time‑consuming measurements, making it suitable for high‑volume inspection.

What does tolerance class 2A mean for the inspection result?
Tolerance class 2A indicates the external thread quality level against which the gauge is applied; using this ring gauge verifies that external threads meet the expected production tolerance for class 2A fittings.

Is the gauge suitable for both left‑ and right‑hand threads?
This specific ring gauge is supplied for right‑hand threads as stated in the product details; left‑hand versions require a separately designated gauge.

Which materials is this ring gauge compatible with during inspection?
The tool is intended for dimensional verification of external threads regardless of the workpiece material; the gauge itself is made from hardened gauge steel for wear resistance.

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