No. 5 40 TPI Thread Plug Gauge UNC, 2B, Hardened Gauge Steel, ANSI/ASME B1.1 - Metav IndustryLine

Take advantage of a hardened gauge built to the ANSI/ASME thread standard, combining repeatable inspection and durable construction for reliable in‑line verification. Order directly via Metav Werkzeuge or consult the Metav team for application guidance and supply certainty.

Thread Plug Gauge No. 5 (UNC 40 TPI) — hardened gauge steel, ANSI/ASME B1.1 (2B) by Metav IndustryLine

The Thread Plug Gauge No. 5 (UNC 40 TPI, 2B) is a hardened plug for fast verification of internal UNC threads in accordance with ANSI/ASME standards; suitable as a workshop control for routine quality checks

• Hardened gauge steel for long service life
• Conforms to ANSI/ASME B1.1 thread standard
• No. 5, 40 TPI – for UNC internal threads
• Tolerance class 2B for standard fits

Fast, standards‑based inspection for internal UNC threads

The Thread Plug Gauge No. 5 (UNC 40 TPI, 2B) provides a concise, standards‑oriented method for checking internal threads. By matching the thread form and pitch specified in ANSI/ASME B1.1, the gauge supplies an objective pass criterion for production parts and incoming inspections. Use of a dedicated inspection gauge reduces interpretation time compared with visual checks, helping to maintain consistent throughput and minimise rework. The clear link to a recognised standard also supports traceable quality documentation in production environments.

Robust construction that keeps inspections consistent

Constructed from hardened gauge steel, the gauge resists wear and preserves its profile across repeated use, which sustains accuracy and reduces replacement intervals. The combination of a hardened material and compact geometry yields a tool that is simple to handle—its listed mass of 0.1 kg contributes to quick positioning while avoiding unnecessary operator fatigue. For routine shop use, this resilience translates into fewer process interruptions and predictable measurement results that feed directly into quality control workflows.

Practical fitment and workshop compatibility

Designed for internal UNC threads at 40 TPI and finished to tolerance class 2B, the item is suitable where a standard thread fit is required. The gauge is compact and easily stored with other measuring tools, and its specification makes it straightforward to include in inspection plans or control charts. Identified as M315.915, the unit is ready for integration into inventory and traceability systems and pairs well with existing gauging and go/no‑go workflows to speed decisions on acceptance or further machining.

For reliable thread inspection and dependable delivery from Metav IndustryLine, contact Metav Werkzeuge in Emmerich for tailored advice and ordering assistance

Technical data

• Article number: M315.915
• GTIN: 4054469179407
• Weight: 0.1 kg
• Material: hardened gauge steel

Facts

• Designation: No. 5
• Thread: UNC 40 TPI
• Tolerance class: 2B
• Standard: ANSI/ASME B1.1/B1.2

Special features

• Hardened gauge steel
• Intended use: internal thread verification
• Category: gauge pins; gauges

FAQ

What does tolerance class 2B indicate for internal threads?
Tolerance class 2B denotes a standard internal thread fit with moderate allowance for clearance; the Thread Plug Gauge No. 5 (UNC 40 TPI, 2B) checks that threads meet this conventional tolerance for general mechanical assemblies.

Is the gauge compliant with industry standards?
Yes—the plug gauge conforms to ANSI/ASME B1.1, ensuring the thread form and pitch match accepted UNC specifications for reliable interchangeability.

Which materials suit inspection with this gauge?
The gauge itself is made from hardened gauge steel; it is used to inspect internal threads regardless of the workpiece material, provided the thread form is UNC No. 5 at 40 TPI.

How should the gauge be referenced in inventory and documentation?
Reference as M315.915 — Thread Plug Gauge No. 5, UNC 40 TPI, 2B — to ensure unambiguous traceability in procurement and quality records.

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