15/16" UNEF Thread Go/No-Go Ring Right-Hand 20 TPI ANSI B1.1 2A - Metav IndustryLine

Take advantage of hardened gauge steel, ANSI/ASME B1.1 conformity and tolerance class 2A for fast, repeatable verification of external threads; order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread ring gauge UNEF NOGO, 15/16-20 ANSI/ASME B1.1 / 2A — NOGO external thread ring, hardened gauge steel, right-hand thread

The Thread ring gauge UNEF NOGO, 15/16-20 ANSI/ASME B1.1 / 2A is a hardened no-go ring designed for rapid verification of external UNEF threads on finished parts, ensuring conformity with industry thread form standards and consistent production quality.

• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1 thread standard
• NOGO function for quick external checks
• Right-hand thread, 15/16-20 UNEF size

Reliable inspection through hardened construction

The ring is manufactured from hardened gauge steel, giving it the rigidity required for frequent use on the shop floor. Hardened material reduces wear and preserves the go/no-go profile so that checks remain consistent over time. The mechanical stability of the gauge translates directly into fewer false rejects and more predictable process control, which supports efficient batch inspection and reduces rework.

Conformity with recognised thread standards

Built to ANSI/ASME B1.1, the ring matches the official UNEF profile and pitch conventions; the designation 15/16-20 denotes an external thread with 20 threads per inch on a 15/16-inch nominal diameter. Using a gauge that adheres to a formal standard guarantees compatibility with mating parts manufactured elsewhere and simplifies acceptance criteria in quality documentation.

NOGO function explained and practical benefit

As a NOGO ring, this tool is intended to detect oversized or incorrectly formed external threads: the part must not enter the NOGO member when within tolerance. This single-purpose check accelerates routine inspections and reduces interpretation effort compared with dimensional measurements alone. The clear pass/fail nature of the NOGO test increases throughput on production lines while maintaining objective evidence for quality records.

Workshop suitability and traceability

With a compact mass of 0.4 kg and a robust design, the ring is easy to handle during repeated checks and resists the knocks typical in industrial environments. The tolerance class 2A specifies manufacturing tightness suitable for standard commercial and industrial fits, offering a practical balance between accuracy and durability. The product's GTIN and SKU support traceability in procurement and inventory systems, assisting calibration cycles and asset management.

For precise thread verification with Metav IndustryLine quality, contact Metav Werkzeuge for ordering or technical matching — email info@metav-werkzeuge.com or call +49 2822 7131930 for expert advice and delivery options.

Technical Data

• Article number: M315.989.EF
• GTIN: 4054469181042
• Label: Thread ring gauge UNEF NOGO, 15/16-20 ANSI/ASME B1.1 / 2A
• Manufacturer: Metav IndustryLine

Facts

• Mass: 0.4 kg
• Size: 15/16" (15/16-20)
• Pitch/threads per inch: 20
• Tolerance class: 2A

Special features

• Material: hardened gauge steel
• Thread orientation: right-hand thread
• Function: NOGO ring for external thread inspection
• Standard: ANSI/ASME B1.1/B1.2

FAQ

What is a NOGO ring used for?
A NOGO ring is used to verify that an external thread does not exceed the maximum material condition; the Thread ring gauge UNEF NOGO, 15/16-20 ANSI/ASME B1.1 / 2A must not fit an out-of-tolerance thread, providing a decisive pass/fail result.

Which standard does this gauge follow?
The gauge conforms to ANSI/ASME B1.1, ensuring the thread form and pitch meet widely recognised UNEF specifications for interchangeability.

Is this gauge suitable for left-hand threads?
No — the gauge features a right-hand thread orientation as stated in the product data and is intended for standard right-handed external UNEF threads.

What material is the ring made from and why does that matter?
The ring is made from hardened gauge steel, offering wear resistance and dimensional stability so that inspection results remain reliable during routine use.

How should the ring be used in a quality inspection routine?
Apply the NOGO ring to the external thread; a correct part will not pass the NOGO member. Record the result as part of regular batch sampling to maintain traceable quality evidence for the Thread ring gauge UNEF NOGO, 15/16-20 ANSI/ASME B1.1 / 2A.

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