# Hex nut Koelner M12 A2 stainless steel DIN 934 — pack of 13

**URL:** https://aio.lv/en/product--koelner-b-934-12-a2--11801093
**Data updated:** 2026-03-09 07:40 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Koelner
**Manufacturer code:** B-934-12-A2
**EAN:** 5906675427584
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 37.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koelner-b-934-12-a2--11801093

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Koelner hex nut M12 A2 conforms to DIN 934. Manufactured from A2 stainless steel, this M12 threaded nut provides corrosion resistance for fastening applications. Supplied as a set of 13 pieces, it is suitable for general mechanical assemblies, construction, plumbing fittings and outdoor installations where stainless hardware is required.

## Long description

Koelner hex nut M12 A2 conforms to DIN 934 and is supplied as a pack of 13 pieces. Made from A2 stainless steel, this hexagonal nut is designed for use with M12 metric threads and offers corrosion resistance suitable for a wide range of fastening tasks. The nut’s standardized DIN 934 dimensions ensure compatibility with bolts and threaded rods in general mechanical assemblies, construction, plumbing fittings and outdoor installations where stainless fasteners are preferred.
Advantages
The A2 stainless steel composition provides good corrosion resistance in typical indoor and outdoor environments, reducing the risk of rust and staining. Conformity to DIN 934 guarantees dimensional accuracy and interchangeability with standard M12 bolts and studs. Supplied in a set of 13, the pack offers enough quantity for small projects or maintenance tasks and simplifies procurement when multiple identical fasteners are required.
Suitable for
Mechanical assemblies and machine maintenance
Construction and metalwork fastening
Plumbing fixtures and pipe connections
Outdoor equipment and installations exposed to weather
DIY projects requiring corrosion-resistant M12 fasteners
Key specifications
Thread size: M12 metric
Material: A2 stainless steel (austenitic stainless)
Standard: DIN 934 hex nut dimensions
Shape: Hexagonal nut (6-sided)
Pack quantity: 13 pieces
How to use
Select an M12 bolt or threaded rod with a matching pitch and thread form, then hand-start the nut onto the bolt to avoid cross-threading. Use an appropriate-sized wrench or socket to tighten the hex nut to the required torque specified for the application and bolt grade. For assemblies exposed to vibration or thermal cycling, consider using a locking washer or thread-locking solution compatible with stainless steel to maintain joint integrity.
Usage recommendations
Store the nuts in a dry, clean environment to preserve the stainless surface finish. When fastening into dissimilar metals, take measures to prevent galvanic corrosion, such as using insulating washers or compatible materials. Follow applicable torque charts and installation standards to ensure safe and reliable connections.

## FAQ

### How much does the Hex nut Koelner M12 A2 DIN 934 cost, and is it available for purchase?

The price is 44.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 280 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 03.07.2026 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 Koelner 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 Koelner 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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