No. 5 44 TPI UNF Thread Ring Gauge Right-Hand ANSI/ASME B1.1 2B - Metav IndustryLine

Combining proven ANSI/ASME conformity, hardened gauging steel and a 2B tolerance class delivers dependable, repeatable thread acceptance for production and inspection. Order the gauge via Metav Werkzeuge or consult our product specialists for specification advice.

Thread plug gauge UNF No. 5 × 44 — hardened gauging steel, ANSI/ASME B1.1 (2B)

The Thread plug gauge UNF No. 5 × 44 (ANSI/ASME B1.1, 2B) is a purpose-built go/no-go checking instrument for fine UNF internal threads used in precision assemblies and quality control.

• ANSI/ASME B1.1 compliant thread standard
• Hardened gauging steel for long life
• Tolerance class 2B for precise acceptance
• Right-hand UNF No. 5 × 44 thread form

Assured conformity for fine UNF internal threads

Precision inspection relies on clear standards and robust gauging. The plug gauge is manufactured to ANSI/ASME B1.1/B1.2, matching the Unified National Fine (UNF) form for a No. 5 × 44 thread, and presented in tolerance class 2B for internal thread acceptance. This classification means the gauge corresponds to the nominal internal-thread tolerance used in general engineering practice, enabling straightforward pass/fail decisions on threaded bores and components. The compliance with the standard supports interchangeability across suppliers and prevents rework due to mismatched thread forms.

Built to withstand routine shop use while preserving accuracy

Materials and heat treatment determine how long a gauge remains reliable. Constructed from hardened gauging steel, the plug gauge resists wear from repeated contact with mating parts and retains profile integrity under normal handling. The right-hand UNF thread form is produced with tight flank geometry to reduce measurement ambiguity. Lightweight yet robust, the item is suited to handheld inspection and can be incorporated into benches for systematic sampling without rapid degradation. Basic care — cleaning after use and avoiding excessive torque — preserves calibration and service life.

Versatile for production control and incoming inspection

This gauge is ideal for inline checks, incoming goods inspection and final QC of small assemblies where fine UNF threads are specified. Typical applications include fastening points in instrumentation, small flanges and precision fittings. The simple go/no-go principle shortens inspection time: the go end confirms minimum material and thread pitch conformity, the no-go end signals oversize or incorrect form. By implementing standardised gauging, process engineers secure consistent acceptance criteria and reduce subjective interpretation during quality checks.

Rapid decision-making through a clear go/no-go method

The plug gauge supports uncomplicated, repeatable checks: the go tester should enter smoothly without forcing, while the no-go must not fully engage; any deviation indicates a non-conforming thread. This method removes ambiguity from measurements and accelerates quality decisions on production lines. For traceability, record lot checks alongside the gauge SKU and GTIN. Where traceable calibration is required, Metav can provide advice on calibration options to integrate this gauge into routine inspection schedules and quality management systems.

For reliable in-line verification of fine UNF internal threads, request the Metav IndustryLine No. 5 × 44 UNF thread plug gauge from Metav Werkzeuge or contact our advisers in Emmerich for tailored specification support.

Technical data

• SKU: M315.915.F
• GTIN: 4054469179414
• Designation: Thread plug gauge UNF No. 5 × 44 ANSI/ASME B1.1 / 2B
• Brand: Metav IndustryLine

Facts

• Size: No. 5
• Threads per inch: 44 tpi
• Tolerance class: 2B
• Weight: 0.1 kg
• Customs tariff number: 90173000

Special features

• Material: gauging steel, hardened
• Thread direction: right-hand (UNF)
• Standard: ANSI/ASME B1.1/B1.2
• Category: Gauges / Measuring pins / Inspection tools

FAQ

What thread form and size does this gauge check?
The gauge verifies the UNF No. 5 × 44 thread form in accordance with ANSI/ASME B1.1; the go/no-go ends are matched to the Thread plug gauge UNF No. 5 × 44 (Metav IndustryLine, SKU M315.915.F).

What does tolerance class 2B indicate for internal threads?
Tolerance class 2B denotes the common internal-thread tolerance for general engineering use; the plug gauge is manufactured to this class to ensure standard acceptance limits for mating parts.

Is the gauge suitable for repeated production checks?
Yes — manufactured from hardened gauging steel, the tool is designed for routine shop checks and maintains profile accuracy under normal inspection regimes.

How should the plug gauge be used in go/no-go testing?
The go end must enter freely to confirm minimum material and correct pitch; the no-go end must not fully engage. Any departure from this behaviour indicates a non-conforming thread according to the specified standard.

Can this gauge be used for calibration records or traceability?
The gauge can be included in a traceability programme; for formal calibration services and interval recommendations, Metav Werkzeuge can advise on the best practice for laboratory or in-house calibration.

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