7/8" 14 TPI UNF Thread Plug Gauge Right-Hand, Hardened Gauge Steel, ANSI/ASME B1.1/B1.2 - Metav IndustryLine

Take advantage of a robust inspection solution that combines conformity to ANSI/ASME B1.1, a 2B tolerance class and durable, hardened gauge steel for repeatable internal thread verification; order the gauge directly via Metav Werkzeuge or consult the specialists for application support.

Thread plug gauge UNF 7/8 x 14 (ANSI/ASME B1.1) — hardened gauge steel, 2B tolerance by Metav IndustryLine

The Thread plug gauge UNF 7/8 x 14 ANSI/ASME B1.1 / 2B is a compact inspection mandrel for checking internal UNF threads to the ANSI/ASME standard in production and quality-control environments

• UNF 7/8 x 14 to ANSI/ASME B1.1
• Hardened gauge steel construction
• Tolerance class 2B for internal threads
• Right-hand thread check

Reliable verification for internal UNF threads

A thread plug gauge provides a direct, tactile method to confirm whether an internal UNF thread meets specification. The UNF 7/8 x 14 geometry is manufactured to comply with ANSI/ASME B1.1, ensuring compatibility with mating external threads produced to the same standard. This method reduces measurement ambiguity by giving a clear acceptance criterion: the mandrel either engages within tolerance or it does not. The primary benefit is faster go/no-go assessment on the shop floor, improving throughput while maintaining consistent quality control.

Built for repeatable accuracy and long service life

Constructed from hardened gauge steel, the gauge resists wear and maintains dimensional stability under repeated use. The robust material selection reduces the need for frequent replacement, which translates into lower lifecycle costs and less downtime for inspection tooling. Durable finishing and precise manufacturing keep the checking surface true to the thread form, so inspection intervals can be scheduled with confidence rather than guesswork. This results in measurable time savings in routine checks and first-article inspections.

Standards explanation and the meaning of 2B

The designation 2B denotes a standard internal thread tolerance class commonly used in metric and unified systems for general-purpose assemblies. When combined with ANSI/ASME B1.1 compliance, it signifies that the internal thread geometry falls within the expected clearance and fit range for general engineering applications. For engineers and quality managers this offers a clear specification reference, simplifying acceptance criteria and documentation during incoming inspection or final assembly checks.

Practical handling and workshop integration

The gauge is designed for straightforward use in the workshop: insert the mandrel into the bore to verify thread fit, visually inspect the engagement, and log acceptance. Lightweight yet stable, the tool integrates easily into existing inspection routines and is suitable for bench or portable checks. The compact form factor supports efficient storage and handling in busy production environments. For tailored measurement strategies or integration into a quality plan, Metav IndustryLine documentation and personnel can advise on best-practice procedures for traceable inspection workflows.

For application advice or immediate supply of this Metav IndustryLine thread plug gauge, contact Metav Werkzeuge in Emmerich by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: M315.928.F
• GTIN: 4054469179759
• Label: Gewinde-Lehrdorn UNF, 7/8 x 14 ANSI B1.1 / 2B
• Manufacturer: Metav IndustryLine
• Material: hardened gauge steel

Facts

• Size: 7/8"
• Thread pitch: 14 tpi
• Tolerance class: 2B
• Weight: 0.3 kg
• Tariff number: 90173000

Special features

• Right-hand thread
• Complies with ANSI/ASME B1.1/B1.2
• Hardened gauge steel
• Categories: Measuring pins; Gauges

FAQ

What does the 2B tolerance class indicate for internal threads?
The 2B designation indicates a standard internal thread tolerance for general-purpose fits; the thread plug gauge UNF 7/8 x 14 checks that the internal thread falls within this acceptable clearance range.

Is this gauge suitable for production line spot checks?
Yes. The Metav IndustryLine inspection mandrel is designed for rapid go/no-go verification on the shop floor, offering quick acceptance criteria without complex setups.

Which standard ensures compatibility with mating external threads?
The gauge is manufactured to ANSI/ASME B1.1, which defines unified screw threads; use this standard to ensure matching between internal threads and mating external parts.

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