# INSIZE Thread Plug Gauge GO/NO-GO M2.5x0.45 6H (MPN 4130-2D5)

**URL:** https://aio.lv/en/product--insize-4130-2d5--12365279
**Data updated:** 2026-04-26 18:54 (EEST)
**Category:** Measuring tools
**Manufacturer:** INSIZE
**Manufacturer code:** 4130-2D5
**EAN:** 6928640339950
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

INSIZE thread plug gauge GO/NO-GO for M2.5x0.45 threads with 6H tolerance (MPN 4130-2D5). Designed for inspection of internal metric threads, the set verifies acceptance (GO) and rejection (NO-GO) limits to ensure correct thread form and dimensional compliance. Suitable for quality control in manufacturing, maintenance, and inspection workflows.

## Long description

INSIZE Thread Plug Gauge GO/NO-GO M2.5x0.45 6H is a precision gauging tool designed to inspect internal metric threads with nominal size M2.5 and pitch 0.45 mm. The gauge set contains two ends: the GO end, which verifies that a thread meets the minimum acceptance limits, and the NO-GO end, which checks that the thread does not exceed the maximum material condition. Manufactured for routine quality control, the gauge provides a direct, tactile method to confirm thread form and dimensional compliance in production and maintenance environments.
Advantages
The INSIZE GO/NO-GO thread plug gauge offers rapid pass/fail assessment without the need for power or complex instrumentation, enabling immediate decisions on threaded part conformity. Its hard-wearing material and precision-ground thread profiles deliver repeatable measurements and long service life under normal inspection conditions. The simple two-ended design reduces operator training time and supports consistent quality control workflows across machining, assembly, and repair operations.
Suitable for
Incoming inspection of small internal metric threaded components (M2.5 x 0.45)
In-process quality checks on production lines for fasteners and threaded parts
Maintenance and repair tasks where quick verification of internal threads is required
Toolrooms and small-batch manufacturing where manual gauging is preferred
When it may not be suitable
This plug gauge is specific to internal metric threads of nominal size M2.5 with 0.45 mm pitch and 6H tolerance; it is not suitable for external thread measurement or for other thread sizes and pitches. For applications that require quantitative measurements, surface finish assessment, or digital data logging, dedicated measuring instruments such as thread micrometers, optical comparators, or CMMs should be used instead.
Key specifications
Thread size and pitch: M2.5 x 0.45
Tolerance class: 6H (internal thread tolerance)
Type: GO/NO-GO two-ended thread plug gauge
Function: GO end verifies acceptance limit; NO-GO end checks maximum material condition
Intended use: Inspection of internal metric threads
How to use
Clean the threaded hole and the gauge before inspection to remove chips, debris, and lubrication that could affect fit. Insert the GO end into the thread and apply gentle rotation; the GO end should enter and turn freely to indicate the thread meets the minimum internal dimensions. Then try the NO-GO end; it should not fully engage if the thread is within the maximum material limit. Record pass/fail results according to your quality procedures and store the gauge in a protective case to avoid damage.
What to consider before purchase
Verify that the nominal thread size (M2.5 x 0.45) and tolerance class (6H) match the threads you need to inspect
Decide if a simple GO/NO-GO check is sufficient or if you need quantitative measurement capability
Consider environmental factors and handling procedures to preserve gauge accuracy (cleaning, storage, and temperature stability)
Usage recommendations
Use the gauge at ambient temperature and follow a regular calibration and inspection schedule to ensure continued accuracy. Handle the tool carefully, avoid dropping, and keep it free of contaminants. Combine GO/NO-GO checking with occasional reference measurements using calibrated instruments if traceable dimensional data is required.

## FAQ

### What payment options are available?

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### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All INSIZE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized INSIZE service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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