1" UNF Thread Plug Gauge 1x12 TPI ANSI B1.1 2B, Hardened Gauge Steel - Metav IndustryLine

Take advantage of a gauge that combines strict ANSI compliance, hardened gauge steel construction and a precise tolerance class 2B fit for reliable production control; order or request advice directly from Metav Werkzeuge for seamless integration into inspection workflows.

Thread plug gauge 1" x 12 UNF — ANSI/ASME B1.1 / 2B (Metav IndustryLine)

A thread plug gauge 1" x 12 UNF designed for checking right-hand internal UNF threads to ANSI/ASME specifications in production and inspection environments

• Right-hand UNF thread, 1" x 12 tpi
• Hardened gauge steel for wear resistance
• Tolerance class 2B to ANSI/ASME B1.1
• Suitable for production inspection

Consistent conformity to ANSI standards for worry-free checks

The gauge is manufactured to the ANSI/ASME B1.1/B1.2 thread form and supplied in a tolerance class 2B, ensuring that internal threads meet common US Unified National Fine (UNF) fit specifications. Using a dedicated thread plug gauge for go/no-go evaluation removes ambiguity from quick inspection routines and reduces downstream rework. The familiar 1" × 12 tpi geometry allows direct substitution into established inspection plans and holds up under frequent use thanks to the hardened construction. This combination of standard conformity and robust material reduces audit friction and supports traceable quality procedures.

Built for repetitive use: durability and dimensional stability

Constructed from hardened gauge steel, the tool resists wear and maintains dimensional integrity over repeated engagement cycles, which is essential when gauges are operated on the shop floor several times a shift. The right-hand thread orientation is standard for most UNF applications; the plug design provides a tactile pass/fail confirmation that is both fast and unambiguous. By specifying a gauge with a defined tolerance class 2B, inspection throughput improves because acceptance criteria are clear and repeatable, helping to lower scrap rates and improve process capability metrics in batch production.

Practical integration into workshop and QA routines

The plug gauge is optimised for use directly at the point of manufacture or within a control bench: it supports quick verifications after tapping operations and during incoming inspection of purchased components. As a compact metrology tool, it fits into existing gauge sets and racks and pairs well with complementary checks such as thread ring gauges or profilometry where required. The simple go/no-go principle that this type of gauge applies makes it an efficient first line of defence in quality assurance, enabling technicians to identify issues immediately and escalate for corrective action when necessary.

Request a technical consultation or a supply recommendation from Metav Werkzeuge GmbH — Metav IndustryLine gauges are supported from our Emmerich hub and technical advice is available at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• SKU: M315.930.F
• GTIN: 4054469179797
• Weight: 0.45 kg
• Material: Gauge steel, hardened
• Thread: UNF 1" × 12 tpi, right-hand
• Tolerance class: 2B
• Standard: ANSI/ASME B1.1/B1.2
• Tariff number: 90173000

Facts

• Diameter: 1"
• Pitch: 12 tpi
• Weight: 0.45 kg
• Tolerance class: 2B

Special features

• Right-hand thread
• Hardened gauge steel for wear resistance
• Intended use: production and inspection
• Categories: Measuring pins, Gauges

FAQ

What thread form and size does this gauge check? The thread plug gauge 1" x 12 UNF (Metav IndustryLine, SKU M315.930.F) verifies internal UNF threads with 1" diameter and 12 threads per inch in accordance with ANSI/ASME B1.1

Which tolerance class is used and what does it mean? Tolerance class 2B denotes the standard internal thread tolerance for UNF fittings; the gauge confirms that internal threads fall within the accepted limits for assembly and fit

Is this gauge suitable for shop-floor production checks? Yes — the hardened gauge steel construction and go/no-go plug format make the gauge suitable for repetitive production inspection and quick acceptance testing

What standards does the gauge comply with? Compliance is to ANSI/ASME B1.1/B1.2, ensuring compatibility with common UNF thread specifications used in manufacturing and assembly

Can the gauge be used alongside other thread inspection tools? The gauge integrates easily with existing inspection sets and complements ring gauges or more advanced dimensional checks when additional verification is required

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