# Hex self-locking nut Niczuk M8 — stainless steel/steel not specified

**URL:** https://aio.lv/en/product--niczuk-81491008000--11828733
**Data updated:** 2026-03-09 14:37 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Niczuk
**Manufacturer code:** 81491008000
**EAN:** 5907754249158
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 2.06 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--niczuk-81491008000--11828733

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

Hexagonal self-locking nut Niczuk M8 designed to secure threaded connections and resist loosening under vibration. This M8-sized lock nut features a self-locking mechanism for reliable retention in assemblies, suitable for general fastening tasks in machinery, automotive repairs, construction and maintenance where an M8 threaded fastener is required.

## Long description

Hexagonal self-locking nut Niczuk M8 in stainless steel/steel is designed to secure threaded connections and reduce the risk of loosening under vibration. The M8 size fits standard metric threads and the self-locking feature provides frictional resistance that maintains preload in assemblies where movement or shock could otherwise cause fasteners to back off. The nut is intended for use with bolts and studs of compatible M8 thread pitch in general fastening applications.
Advantages
The self-locking mechanism increases joint reliability by creating axial friction against the mating thread without requiring additional locking elements. Made from stainless steel/steel, the nut combines corrosion resistance properties with mechanical strength suitable for many indoor and outdoor environments. Its hexagonal shape allows for simple installation and removal using common wrenches or sockets, enabling standard assembly and maintenance procedures.
Suitable for
 Mechanical assemblies and machinery where vibration is present
 Automotive repairs and vehicle components requiring M8 fasteners
 Construction and maintenance tasks with metric threaded connections
 Equipment mounting, brackets, and structural fastening requiring reliable locking
Key specifications
 Type: Hexagonal self-locking nut
 Thread size: M8 (metric)
 Material: stainless steel/steel (not specified which part is stainless)
 Locking method: frictional self-locking insert/feature
 Drive: hexagonal, fits standard wrenches and sockets
How to use
Select a corresponding M8 bolt or stud with matching thread pitch, hand-start the nut onto the threaded component to avoid cross-threading, and then tighten to the required torque using a wrench or socket appropriate for a hex nut. The self-locking feature will engage as the nut tightens, increasing friction to resist loosening; follow equipment-specific torque recommendations to achieve correct preload without damaging threads or the locking element.
Usage recommendations
For assemblies exposed to frequent disassembly, inspect the locking feature for wear and replace the nut if the locking ability diminishes. Avoid applying lubricants directly to the locking element unless specified by application guidelines, as lubrication can reduce locking performance. When corrosion resistance is critical, confirm which material—stainless or standard steel—applies to the specific part and choose compatible coatings or materials for mating fasteners.

## FAQ

### How much does the Niczuk hex self-locking nut M8 cost, and is it available for purchase?

The price is 2.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 75 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 20.07.2026 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. 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 Niczuk 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 Niczuk 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/11828733/67229694_large.webp