7/8" 20 TPI UNEF Thread Go/No-Go Plug Gauge Right-Hand Hardened Gauge Steel ANSI/ASME B1.1 2B - Metav IndustryLine

Ensure reproducible thread inspections with a hardened gauge steel plug that meets ANSI/ASME tolerances; the compact UNEF format and robust construction support frequent go/no-go checks and steady production quality. Order the thread plug gauge directly via Metav Werkzeuge or ask our consultants for application advice.

Thread plug gauge UNEF 7/8 x 20 ANSI B1.1 / 2B — hardened gauge steel, right‑hand thread (Metav IndustryLine)

The Thread plug gauge UNEF 7/8 x 20 ANSI B1.1 / 2B is a hardened gauge steel go/no-go plug gauge designed for rapid verification of internal UNEF threads in accordance with ANSI/ASME tolerances.

• Hardened gauge steel construction
• ANSI/ASME B1.1 thread standard
• UNEF 7/8 x 20 size, 2B tolerance
• Right-hand thread for standard fittings

Fast, reliable in-process verification for threaded parts

A thread plug gauge made from hardened gauge steel delivers consistent results during repetitive inspections. The UNEF 7/8 x 20 format with 2B tolerance is tailored for internal threads where a defined fit and interchangeability are required; using a dedicated go/no-go gauge streamlines acceptance testing and shortens inspection cycles. By offering a tactile, immediate check of thread quality, this gauge reduces the need for time‑consuming dimensional measurements and supports stable throughput in quality control routines.

Durable design that stands up to workshop use

Constructed in hardened gauge steel and weighing approximately 0.3 kg, the gauge is dimensioned for frequent handling while remaining robust against wear. The right-hand thread orientation matches standard fittings, simplifying assembly checks and maintenance tasks. Because the material and heat treatment prioritise surface hardness and resistance to abrasion, the gauge maintains its checking accuracy over many cycles, which lowers replacement frequency and total cost of ownership in production environments.

Conformance to standards and typical applications

Compliance with ANSI/ASME B1.1/B1.2 provides a clear, industry‑recognised specification for thread form and tolerance; this aids traceability and purchasing decisions for suppliers and inspection departments. Typical use cases include incoming goods inspection, first‑article checks, fit verification on assemblies and routine shopfloor audits in machining and maintenance shops. The compact format and precise pitch (20 tpi) make the gauge particularly suitable for fine‑threaded mechanical connections where consistent assembly behaviour is essential.

Contact Metav Werkzeuge today to secure the UNEF 7/8 x 20 thread plug gauge or request specific application advice via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: M315.928.EF
• GTIN: 4054469179742
• Weight: 0.3 kg
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Label: Thread plug gauge UNEF 7/8 x 20 ANSI B1.1 / 2B

Facts

• Size: 7/8"
• Threads per inch: 20 tpi
• Tolerance class: 2B
• Thread direction: Right-hand
• Mass: 0.3 kg

Special features

• UNEF thread form
• Hardened gauge steel construction
• For internal thread verification (go/no-go)
• Conforms to ANSI/ASME B1.1/B1.2

FAQ

What is this gauge intended to check?
The thread plug gauge UNEF 7/8 x 20 checks internal UNEF threads for conformity to the 2B tolerance; it is used as a go/no-go verification tool during inspections.

Does the gauge meet recognised standards?
Yes, this Metav IndustryLine thread plug gauge conforms to ANSI/ASME B1.1/B1.2, ensuring compatibility with standard thread specifications.

What material is the gauge made from and how durable is it?
Made from hardened gauge steel, the M315.928.EF plug gauge is engineered for wear resistance and long service life under frequent shopfloor use.

What does the 2B tolerance class mean for fittings?
The 2B class denotes a standard internal thread tolerance suitable for general engineering applications, providing controlled clearance for mating external threads.

Can this gauge be used for left‑hand threads?
No — the gauge is manufactured with a right‑hand thread and is intended for standard right‑hand internal thread verification.

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