1 1/2" UNEF Thread Plug Gauge 18 TPI Right-Hand Hardened Gauge Steel ANSI B1.1/B1.2 - Metav IndustryLine

Take advantage of a standards‑based inspection tool that combines UNEF 1 1/2" x 18 sizing, tolerance class 2B and hardened gauge steel construction for reliable, repeatable checks of internal threads; order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread plug gauge UNEF, 1 1/2" x 18, class 2B — Metav IndustryLine

Thread plug gauge UNEF, 1 1/2" x 18, class 2B suitable for checking internal UNEF threads to ANSI/ASME B1.1/B1.2 standards in production and inspection environments

• Right-hand UNEF 1 1/2" x 18
• Conforms to ANSI/ASME B1.1/B1.2
• Hardened gauge steel construction
• Tolerance class 2B for internal threads

Fast, standards-based pass/fail inspection that reduces rework

A compact, robust male gauge enables quick verification of internal threads according to ANSI/ASME B1.1/B1.2, ensuring compatibility with mating bolts and assemblies. The UNEF form at 1 1/2" x 18 tpi provides a clear go/no‑go result, which shortens inspection time and reduces the risk of assembly failures. For production lines and maintenance tasks, this method translates directly into fewer rejects and lower rework costs.

Durable construction for consistent results over time

Manufactured from hardened gauge steel, the unit resists wear from repeated engagement and preserves gauge geometry across many inspection cycles. The right‑hand thread design is optimised for standard fastening directions and the 2B tolerance reflects the internal thread acceptance class typically required in mechanical engineering. The material choice and heat treatment together deliver long service life and reliable dimensional stability.

Simple integration into quality control workflows

The plug style allows straightforward insertion into the component; a pass indicates conformity to the 2B acceptance class while a no‑go detects undersize or imperfect threads. This direct method supports traceable quality routines and can be documented in routine inspection records. For workshops requiring repeatable checks, the gauge is an efficient addition to first article inspection and random sampling programmes.

Confidence at procurement and on the shop floor

Specifying a gauge that adheres to recognised standards removes ambiguity in procurement and assures downstream teams that incoming parts meet mechanical expectations. The combination of clear standards compliance, robust hardened gauge steel construction and a defined tolerance class provides both technical certainty and practical peace of mind when selecting inspection tools for series production or repair operations.

Contact Metav Werkzeuge for expert advice on integrating the Metav IndustryLine thread plug gauge into inspection processes — phone +49 2822 7131930 or eMail info@metav-werkzeuge.com

Technical data

• Article number: M315.935.EF
• GTIN: 4054469179919
• Weight: 0.8 kg
• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2

Facts

• Size: 1 1/2"
• Pitch: 18 tpi
• Tolerance class: 2B
• Tariff number: 90173000

Special features

• Right-hand thread
• Thread form: UNEF (Unified Extra Fine)
• Product type: Thread plug gauge
• Categories: Gauge pins; Gauges

FAQ

What does the tolerance class 2B mean for internal threads?
Tolerance class 2B specifies the internal thread acceptance limits for standard engineering practice; the Thread plug gauge UNEF, 1 1/2" x 18, class 2B checks internal threads against those limits to confirm conformity.

Is this gauge suitable for production sampling or only for final inspection?
The Metav IndustryLine plug gauge is suitable for both production sampling and final inspection thanks to its hardened construction and standards‑based dimensions.

Does the gauge indicate whether a thread is damaged or simply out of tolerance?
A no‑go result from the Thread plug gauge UNEF, 1 1/2" x 18, class 2B indicates the internal thread fails to meet the specified tolerance; further assessment is required to distinguish between damage and dimensional error.

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