1/4" 20 UNC Thread Plug Gauge ANSI B1.1 2B, Hardened Gauge Steel - Metav IndustryLine

Benefit from a robust combination of hardened gauging steel and strict ANSI/ASME B1.1 compliance for repeatable internal thread verification; ideal for in‑line inspection and final acceptance tests. Order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Thread plug gauge UNC 1/4-20 — ANSI/ASME B1.1, tolerance 2B (Metav IndustryLine)

Thread plug gauge UNC 1/4-20 for quick verification of internal UNC threads, designed for workshop and production inspection tasks

• Hardened gauging steel construction
• Complies with ANSI/ASME B1.1 standard
• Thread size 1/4-20 UNC, 20 tpi

Reliable verification for internal UNC threads

The Thread plug gauge UNC 1/4-20 from Metav IndustryLine is engineered for consistent thread verification of internal UNC threads in production and quality control. Manufactured to the ANSI/ASME B1.1/B1.2 profile and delivered in tolerance class 2B, the gauge provides a clear go/no-go decision basis when used as part of acceptance testing. The compact design simplifies handling on the shop floor while ensuring that inspections are traceable and repeatable, supporting efficient process control in assembly and incoming inspection.

Durable construction reduces downtime

Made from hardened gauging steel, the gauge offers high wear resistance and long service life under frequent use. The robust material and precision machining preserve thread form and dimensional fidelity, translating into fewer replacements and less rework. A low mass and compact form factor make the tool easy to store and to integrate into inspection stations, while the material choice minimises corrosion and surface damage during routine handling, promoting reliable measurement performance over time.

Fits into quality workflows and traceability systems

This plug gauge is optimised for routine inspection tasks within production environments, incoming goods control and final inspection steps. The clear specification—1/4‑20 UNC, 20 tpi, 2B tolerance—simplifies documentation and procurement, and the SKU and GTIN support inventory and traceability procedures. When incorporated into an inspection plan, the gauge helps enforce part conformity to international thread standards, reducing assembly rejects and improving overall product quality.

Request technical clarification or order supply from Metav Werkzeuge for Metav IndustryLine gauges — contact info@metav-werkzeuge.com or call +49 2822 7131930 for delivery and availability details

Technical Data

• Article number: M315.920
• GTIN: 4054469179513
• Material: Gauging steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Thread size: 1/4" UNC
• Tolerance class: 2B

Facts

• Weight: 0.1 kg
• Thread pitch: 20 tpi
• ECLASS: 21170214

Special features

• Category: Thread plug gauge (internal thread verification)
• Application: Inspection and acceptance testing of UNC threads
• Durable surface and wear resistance

FAQ

What is the primary purpose of this plug gauge?
The plug gauge is intended for verification of internal UNC threads, providing a quick and reliable acceptance test for parts manufactured to ANSI/ASME B1.1 standards.

Which thread specification does the gauge check?
It checks 1/4-20 UNC threads with a pitch of 20 tpi and is manufactured to a 2B tolerance class for standard internal thread acceptance.

What material is used and how does it affect durability?
Constructed from hardened gauging steel, the gauge resists wear and maintains form under repeated use, ensuring long service life and stable inspection results.

Can this gauge be used in incoming inspection and final assembly checks?
Yes, the gauge is suitable for incoming goods inspection, in‑process checks and final assembly verification where adherence to ANSI/ASME B1.1/B1.2 is required.

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