# Knauf LN 3.5x9mm Self-Tapping Screws for Metal Profiles

**URL:** https://aio.lv/en/product--knauf-00003512--12505967
**Data updated:** 2026-06-10 09:33 (EEST)
**Category:** Nails, screws, self-tapping screws & dowels
**Manufacturer:** KNAUF
**Manufacturer code:** 00003512
**EAN:** 4003982034434
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 16.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--knauf-00003512--12505967

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 08.07.2026 | 1.89 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Knauf LN 3.5x9mm screws are specialized fasteners designed for connecting metal profiles in drywall construction systems. These high-quality self-tapping screws ensure a secure and stable connection between metal components. Essential for professional interior finishing, they provide reliable performance and durability for various wall and ceiling framing applications.

## Long description

Knauf LN 3.5x11mm self-tapping screws are professional-grade fasteners specifically engineered for the secure assembly of metal profiles in drywall construction systems. These high-quality screws are designed to provide a robust and stable connection between metal components, ensuring the structural integrity of wall and ceiling framing. Manufactured to meet rigorous standards, these fasteners are an essential component for achieving precise and durable interior finishing results.
Advantages
The primary advantage of these Knauf screws lies in their specialized design, which allows for efficient penetration and fastening into metal profiles without the need for pre-drilling. Their high-quality construction ensures resistance to shearing and loosening, providing long-term stability for complex framing structures. By utilizing these dedicated fasteners, installers can achieve consistent performance and reliable connections that meet professional building requirements for drywall systems.
Suitable for
Connecting metal profiles in drywall partition walls
Assembling metal ceiling grid systems
Fastening metal components in interior construction
Professional drywall framing projects
When it may not be suitable
These screws are specifically optimized for metal-to-metal connections and are not intended for fastening drywall boards to metal profiles or for use with wood substrates. They may not provide adequate holding power in materials other than the specified metal profiles.
Key specifications
Diameter: 3.5 mm
Length: 11 mm
Material application: Metal
Standard: DIN 7504P
Quantity: 1000 pieces
How to use
To use these screws, ensure that the metal profiles are correctly aligned and positioned according to the construction plan. Use a power screwdriver with a suitable bit to drive the screw through the overlapping metal profiles. The self-tapping tip is designed to pierce the metal efficiently; apply steady pressure until the screw head is flush with the surface of the profile. Avoid over-tightening to maintain the integrity of the metal connection.
What to consider before purchase
Verify the thickness of the metal profiles to ensure compatibility with the screw length
Ensure the use of a compatible screwdriver bit to prevent damage to the screw head
Calculate the total number of connections required for your project to ensure sufficient quantity
Usage recommendations
For optimal results, use a professional-grade electric or battery-powered screwdriver with adjustable torque settings to prevent stripping the metal or damaging the screw head during installation.

## FAQ

### How much does the Knauf LN 3.5x9mm Screws for Metal Profiles cost, and is it available for purchase?

The price is 19.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 143 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 Friday 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 KNAUF 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 KNAUF 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/12505967/68847112_large.webp