No. 4 x 48 UNF Thread Plug Gauge Go, Right-Hand, Hardened Gauge Steel, ANSI/ASME B1.1/B1.2 - Metav IndustryLine

The hardened, right‑hand UNF GO thread ring gauge No. 4 x 48 (2A) provides repeatable verification to ANSI/ASME B1.1, combining conformity and robust construction for reliable inspection routines; order the gauge directly via Metav Werkzeuge or consult the technical team for application advice.

UNF GO Thread Ring Gauge No. 4 x 48 (ANSI/ASME B1.1 / 2A) — Hardened Gauge Steel, Right‑hand Thread — Metav IndustryLine

UNF GO Thread Ring Gauge No. 4 x 48 is a precision GO ring gauge designed to check external UNF threads in production and inspection environments according to ANSI/ASME B1.1 standards.

• ANSI/ASME B1.1/B1.2 conformity
• Hardened gauge steel construction
• Right‑hand UNF No. 4, 48 tpi, tolerance 2A

Conformity and repeatable inspection results

The primary benefit of the gauge is its adherence to ANSI/ASME B1.1, ensuring that acceptance decisions are founded on an established international standard. Manufactured as a GO ring gauge, this tool verifies that external threads meet the maximum material allowance for assembly. Built for routine use in workshop or production inspection, the device supports consistent pass/fail checks and reduces ambiguity in go/no‑go decisions through its standardised geometry.

Durable design for industrial handling

Constructed from hardened gauge steel, the ring gauge is made to withstand frequent use on the shop floor while maintaining dimensional stability. The right‑hand thread orientation matches standard UNF production and allows direct comparison with external threaded parts. The hardened material and precise manufacturing minimise wear and preserve the gauge form over time, which lowers the need for premature replacements and maintains measurement integrity across production batches.

Practical advantages for quality control workflows

As a ring gauge with 2A tolerance, the instrument targets common clearance and fit requirements for small UNF threads. With 48 tpi and the No. 4 size, the gauge offers a compact solution for frequent thread checks on components and assemblies. Using a GO ring gauge in a first‑line inspection reduces cycle time compared with full thread measurement, while still providing decisive evidence that a threaded component will assemble correctly into specified mating parts.

Traceability and procurement confidence

The product is supplied under the Metav IndustryLine range and carries the internal SKU for ordering and stock control. Lightweight and easy to handle, the gauge integrates into existing inspection routines and can be inventoried alongside other gauges and measurement tools. Procurement from Metav provides the additional assurance of established distribution and quality management centred in Emmerich, which supports reliable stock and consistent delivery for production planning.

Contact Metav Werkzeuge for purchase or specification matching of the Metav IndustryLine UNF GO thread ring gauge and secure dependable gauges for routine thread inspection — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• SKU: M315.944.F
• GTIN: 4054469180038
• Designation: UNF GO thread ring gauge No. 4 x 48 2A

Facts

• Size: No. 4
• Thread: 48 tpi
• Tolerance class: 2A
• Weight: 0.1 kg

Materials & special features

• Material: hardened gauge steel
• Thread direction: right‑hand
• Standard: ANSI/ASME B1.1/B1.2
• Category: ring gauge

FAQ

Which standard does this ring gauge follow?
This UNF GO thread ring gauge conforms to ANSI/ASME B1.1/B1.2 for UNF thread form and manufacturing dimensions.

What size and thread specification does the gauge check?
The gauge is designed for UNF No. 4 external threads with 48 threads per inch (tpi) and a 2A tolerance class.

What material is the gauge made from and how durable is it?
Manufactured from hardened gauge steel, the ring gauge is intended for regular inspection use and offers good wear resistance for repeat go/no‑go checking.

How is the gauge intended to be used in a production workflow?
As a GO ring gauge, it is used for quick acceptance testing of external threads: the workpiece should enter the gauge without obstruction to confirm conformance to the maximum material condition.

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