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

Take advantage of a hardened gauge‑steel construction, precise UNC thread form to ANSI/ASME B1.1, and a clear NOGO pass/fail function to speed up quality checks and reduce rework; order the gauge directly via Metav Werkzeuge or contact our consultants for application advice.

Thread ring gauge NOGO 5/16‑18 UNC, tolerance 2A (Metav IndustryLine)

The thread ring gauge NOGO 5/16‑18 UNC, tolerance 2A is a compact NOGO ring for fast verification of external UNC threads to ANSI/ASME standards on production and inspection benches

• Hardened gauge steel for long service life
• ANSI/ASME B1.1 compliant thread form
• NOGO ring for quick pass/fail inspection
• Light weight for portable shop‑floor use

Ensure conformity with recognised thread standards

The ring is manufactured for repeatable verification of external UNC threads and is produced to the ANSI/ASME B1.1 thread form with 2A tolerance. As a NOGO ring, it performs a decisive check: the gauge must not enter an undersized or out‑of‑tolerance external thread. This clear binary verification reduces interpretation errors and accelerates inspection cycles, supporting traceable quality decisions and lowering the risk of scrap or downstream assembly faults.

Robust build quality that preserves accuracy

Made from hardened gauge steel, the component resists wear and maintains its measuring edges under frequent use. The material choice ensures dimensional stability and a long service life even in busy workshops; the unit’s weight of 0.2 kg contributes to easy handling during repetitive checks. Minimal maintenance and stable geometry translate into fewer gauge replacements and predictable inspection intervals, which supports efficient production planning.

Practical for shop‑floor and small‑batch inspection

The NOGO ring is tailored for rapid, tactile checks at the workbench. Its geometry and 5/16‑18 thread size make it suitable for routine acceptance tests, first‑piece inspections and in‑process checks where quick go/no‑go decisions prevent defective assemblies from progressing. The single‑function NOGO design complements full gauge sets and provides a focused control point that integrates simply into existing quality routines without complex measurement setups.

Procurement reliability and traceable identification

Supplied by an experienced precision partner, this ring gauge benefits from a consistent quality filter at Metav’s Emmerich location and fits into standard procurement and inventory systems through its clear identification details. Trusted distribution, steady stock levels and Metav’s longstanding market presence support predictable supply for maintenance and series production planning, increasing operational reliability for manufacturing and inspection teams.

For reliable UNC thread control choose the Metav IndustryLine ring gauge and contact Metav Werkzeuge in Emmerich for ordering or further technical guidance via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: M315.981
• GTIN: 4054469180823
• Description: Thread ring gauge NOGO, 5/16‑18 UNC, tolerance 2A
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2

Core data

• Size: 5/16"
• Thread pitch: 18 tpi
• Tolerance class: 2A
• Weight: 0.2 kg
• Tariff number: 90173000

Special features

• NOGO ring for external thread inspection
• Compact, portable for shop‑floor use
• Category: Gauges / Measuring tools
• Intended for fast pass/fail checks

FAQ

What does NOGO mean in this gauge?
NOGO indicates that the ring must not enter a correctly manufactured external thread; the NOGO ring in this thread ring gauge is used to detect oversize or out‑of‑tolerance external threads.

Which standard does the gauge follow?
The ring is produced to ANSI/ASME B1.1/B1.2 for UNC threads and is specified with tolerance class 2A for external thread verification.

What material is used for the ring gauge?
The thread ring gauge is made from hardened gauge steel, chosen to provide wear resistance and durable dimensional stability under repeated use.

How is the gauge identified for procurement and stock control?
Identification is provided via SKU M315.981 and GTIN 4054469180823, enabling clear traceability in purchasing and inventory systems.

Can this ring be used for precision laboratory calibration?
This NOGO ring is intended for production and workshop verification of external UNC threads; for lab‑grade calibration, consult the supplier about traceable calibration services and suitable artefacts

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