# Thread Plug Gauge INSIZE M40x1.5 6H GO/NOGO, model 4139-40R

**URL:** https://aio.lv/en/product--insize-4139-40r--11777372
**Data updated:** 2026-03-08 22:47 (EET)
**Category:** Measuring tools
**Manufacturer:** INSIZE
**Manufacturer code:** 4139-40R
**EAN:** 6940561966848
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 82.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 68.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--insize-4139-40r--11777372

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

INSIZE thread plug gauge M40x1.5 6H GO/NOGO (model 4139-40R) is a go/no-go measuring tool for verifying internal M40×1.5 metric threads with 6H tolerance class. The gauge provides pass/fail checking of thread acceptance and is used in quality control, inspection and assembly to ensure correct thread size and conformity to specification.

## Long description

INSIZE Thread Plug Gauge M40x1.5 6H GO/NOGO (model 4139-40R) is a precision go/no-go measuring tool designed to verify internal metric threads with M40×1.5 pitch and 6H tolerance. The gauge provides a quick and reliable pass/fail check to confirm that internal threads meet dimensional requirements and assembly fit. It is intended for routine inspection in workshops, production lines, and maintenance settings where consistent thread quality is required.
Advantages
The gauge offers immediate go/no-go verification without the need for complex measurement setup, reducing inspection time and human error. Manufactured to stable geometric tolerances, it ensures repeatable results and consistent assessment of thread conformity. The physical construction is compact and durable for use in shop-floor environments, simplifying thread acceptance checks during incoming inspection, in-process control, and final quality control.
Suitable for
Incoming inspection of threaded components
In-process quality control on production lines
Assembly verification to ensure correct thread fit
Maintenance and repair checks for threaded holes
Key specifications
Thread size and pitch: M40 × 1.5
Tolerance class checked: 6H internal thread
Type: Go/No-Go (GO and NOGO ends)
Use: Verification of internal metric threads
Application environment: Workshop and production inspection
How to use
Insert the GO end of the gauge into the internal thread and apply gentle, straight pressure; the GO end should enter smoothly if the thread is within tolerance. Then attempt to insert the NOGO end; it should not fully engage the thread if the thread is acceptable. Do not force either end; forcing can damage the gauge and the tested part. Handle the gauge by the shank and keep it aligned with the thread axis during checks.
Usage recommendations
Keep the gauge clean and free of chips or debris, store it in a protective case when not in use, and inspect periodically for wear or damage. Use the gauge at room temperature and avoid exposing it to corrosive environments. Replace the gauge if any signs of wear, burrs or deformation appear to maintain accurate pass/fail results.

## FAQ

### How much does the Thread Plug Gauge INSIZE M40x1.5 6H 4139-40R cost, and is it available for purchase?

The price is 82.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Thread Plug Gauge INSIZE M40x1.5 6H 4139-40R be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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

https://aio.lv/img/cache/product/11777372/67168355_large.webp