1/4"×28 Thread Go Ring Gauge UNF, Right-Hand, Hardened Gauge Steel, ANSI B1.1 2A - Metav IndustryLine

Take advantage of a compact, standards-compliant verification tool that combines 1/4‑28 UNF thread checking with durable, hardened gauge steel construction; order directly via Metav Werkzeuge or consult our specialists for application advice.

Thread Gauge Ring UNF GO, 1/4‑28 2A — Metav IndustryLine, hardened gauge steel

The Thread Gauge Ring UNF GO, 1/4‑28 2A is a precision Go ring gauge for rapid verification of external UNF threads in production and inspection environments.

• Precision Go ring for 1/4-28 UNF threads
• Hardened gauge steel construction
• Conforms to ANSI/ASME B1.1/B1.2
• Tolerance class 2A for external threads
• Right-hand thread configuration

Reliable verification that keeps production moving

A Go ring gauge provides a quick, repeatable check that an external thread meets assembly requirements. The 1/4‑28 UNF designation denotes the nominal size and the 28 tpi (threads per inch) pitch; verification against the ANSI/ASME B1.1/B1.2 standard ensures compatibility with corresponding internal threads manufactured to the same reference. In practice, this results in fewer assembly failures and a measurable reduction in rework and scrap — a clear efficiency gain for inspection routines on the shop floor.

Robust construction for long service life

Manufactured from hardened gauge steel, this ring gauge is engineered to withstand frequent use in a workshop environment. The material choice and heat treatment give wear resistance that conserves tolerance integrity over many inspection cycles, extending the interval between recalibrations. The designation tolerance class 2A identifies the external thread tolerance band and aligns the gauge with common engineering expectations for fit and function, so measurement outcomes are both meaningful and actionable.

Simple integration into quality workflows

Compact and lightweight, the ring is easy to handle at inspection benches and during incoming goods checks. As a Go gauge it confirms that a threaded part will assemble within the intended tolerance; acceptance is immediate when the ring fits correctly. The right-hand thread configuration matches the vast majority of standard fastenings, making this an intuitive tool for production technicians and quality engineers who require rapid, unambiguous results without elaborate setup.

Choose Metav IndustryLine thread gauges for dependable, standards-compliant verification; contact Metav Werkzeuge in Emmerich for specification guidance and supply from the European quality hub.

Technical data

• Article number: M315.950.F
• GTIN: 4054469180175
• Description: Thread gauge ring UNF GO, 1/4 x 28 ANSI B1.1 / 2A

Facts

• Nominal size: 1/4 in
• Threads per inch: 28 tpi
• Mass: 0.1 kg
• Tolerance class: 2A

Special features

• Right-hand thread
• Hardened gauge steel
• Conforms to ANSI/ASME B1.1/B1.2
• Go ring gauge (acceptance check)

FAQ

What is the primary use of this ring gauge?
The Thread Gauge Ring UNF GO, 1/4‑28 2A is used to verify that external UNF threads meet the acceptance criteria for assembly and conformity with the ANSI/ASME standard.

Does this gauge check right- or left-hand threads?
This ring gauge is supplied as a right-hand thread configuration and is suitable for standard right-hand UNF external threads.

Which standard does the gauge comply with?
Compliance is to ANSI/ASME B1.1/B1.2, ensuring dimensional compatibility with internal threads produced to the same standard.

What does tolerance class 2A mean for inspection?
Tolerance class 2A denotes the external thread tolerance band; use of this Go gauge confirms the part falls within that specified external tolerance for reliable mating.

What material is the gauge made from and why does that matter?
The gauge is made from hardened gauge steel, chosen for wear resistance and dimensional stability so inspection results remain consistent over extended use.

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