# TDM Brass Lock-Nut 3/4 inch

**URL:** https://aio.lv/en/product--tdmbrass-120en34--12505065
**Data updated:** 2026-06-10 09:31 (EEST)
**Category:** Nails, screws, self-tapping screws & dowels
**Manufacturer:** tdm\_brass
**Manufacturer code:** 120EN34
**EAN:** 4770364160325
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 2.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tdmbrass-120en34--12505065

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 07.07.2026 | 1.89 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The TDM Brass 3/4 inch lock-nut is a reliable plumbing component designed for securing threaded connections in piping systems. Made from high-quality brass, it ensures durability and resistance to corrosion. This lock-nut is essential for preventing loosening in water supply and heating installations, providing a tight and secure fit for various 3/4-inch threaded fittings.

## Long description

The TDM Brass 3/4 inch lock-nut is a robust plumbing component engineered to provide a secure and stable connection within various piping systems. Constructed from high-quality brass with a nickel finish, this lock-nut offers excellent resistance to corrosion and mechanical wear, ensuring long-term reliability in both water supply and heating installations. Its precise threading is designed to lock fittings firmly in place, preventing accidental loosening due to vibrations or thermal expansion.
Advantages
The primary benefit of this lock-nut is its durable brass construction, which provides superior strength compared to plastic or lower-grade metal alternatives. The nickel coating adds an extra layer of protection against oxidation, making it suitable for environments where moisture is present. Its standard 3/4-inch internal thread ensures compatibility with a wide range of plumbing fixtures, allowing for a tight, leak-resistant seal that maintains the integrity of the entire piping network.
Suitable for
Securing threaded connections in residential water supply systems
Locking fittings in place within heating and radiator installations
Industrial piping applications requiring vibration-resistant joints
Connecting various 3/4-inch threaded plumbing components
When it may not be suitable
This lock-nut is not intended for use with piping systems that exceed the specified temperature range of -20 to +120°C, as extreme conditions may compromise the material integrity. It is also not suitable for applications involving highly aggressive chemical substances that could react with the brass or nickel plating.
Key specifications
Material: Brass with nickel finish
Connection type: 3/4 inch internal thread
Operating temperature range: -20°C to +120°C
Application: Plumbing and heating systems
How to use
To install the TDM Brass lock-nut, first ensure that the threaded pipe or fitting is clean and free of debris. Thread the lock-nut onto the pipe until it reaches the desired position against the mating fitting. Use an appropriate wrench to tighten the nut firmly, ensuring that the connection is secure without over-tightening, which could potentially damage the threads. Verify that the seal is tight and check for any signs of leakage once the system is pressurized.
What to consider before purchase
Verify that your piping system utilizes a 3/4-inch thread size
Ensure the operating environment stays within the -20 to +120°C temperature range
Check for compatibility with other materials in your piping system to prevent galvanic corrosion
Usage recommendations
Regularly inspect the connection points in your plumbing system for signs of wear or loosening, especially in high-vibration environments, to ensure the lock-nut remains properly tightened over time.

## FAQ

### How much does the TDM Brass 3/4 inch Lock-Nut cost, and is it available for purchase?

The price is 2.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 180 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 Thursday 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. All transactions are 100% secure and encrypted.

### 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 tdm\_brass 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 tdm\_brass 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/12505065/68845831_large.webp