# Knauf TN25 Drywall Screws 3.5x25mm

**URL:** https://aio.lv/en/product--knauf-669563--12503892
**Data updated:** 2026-06-10 09:28 (EEST)
**Category:** Nails, screws, self-tapping screws & dowels
**Manufacturer:** KNAUF
**Manufacturer code:** 669563
**EAN:** 4003982511720
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 17.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 14.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--knauf-669563--12503892

## 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 TN25 drywall screws, size 3.5x25mm, are high-quality fasteners designed for mounting gypsum boards to metal profiles. These screws feature a sharp point and a fine thread, ensuring secure and efficient installation in interior construction projects. Reliable performance for professional drywall systems.

## Long description

Knauf TN25 drywall screws, measuring 3.5x25mm, are precision-engineered fasteners specifically designed for the reliable attachment of gypsum boards to metal profiles. These screws are a fundamental component in professional interior construction, providing a secure and durable connection for wall and ceiling systems. With their sharp point and specialized thread design, they facilitate quick penetration and firm anchoring, ensuring that drywall panels remain stable and properly aligned throughout the life of the structure.
Advantages
The primary benefit of using Knauf TN25 screws lies in their optimized design for metal framing. The sharp point allows for immediate engagement with the metal profile, significantly reducing installation time and preventing the screw from slipping during the initial drive. The fine thread is specifically calibrated to grip metal studs effectively, providing high pull-out resistance and a flush finish that is ideal for subsequent taping and jointing processes. These fasteners are manufactured to meet rigorous quality standards, ensuring consistent performance across large-scale construction projects.
Suitable for
Mounting gypsum boards to metal profiles
Interior wall partition construction
Suspended ceiling installations
Drywall lining systems
When it may not be suitable
These screws are not intended for use with wooden framing, as the fine thread design is optimized specifically for metal profiles. They are also not suitable for heavy-duty structural applications or outdoor environments where high corrosion resistance is required, as they are designed for standard interior drywall systems.
Key specifications
Length: 25 mm
Diameter: 3.5 mm
Material compatibility: Metal profiles
Standard: DIN 7504P
Quantity: 1000 pieces
How to use
To install, position the gypsum board firmly against the metal profile. Using a power screwdriver equipped with a depth-limiting nosepiece, drive the screw through the board and into the metal stud. Ensure the screw head is driven slightly below the surface of the board to allow for proper finishing, but avoid breaking the paper surface of the gypsum board, as this can compromise the holding strength.
What to consider before purchase
Verify the thickness of your metal profiles to ensure the 25mm length is appropriate for your specific wall system.
Ensure you have a compatible screwdriver bit for the screw head type.
Calculate the total number of screws required based on the spacing recommendations for your drywall installation.
Usage recommendations
For optimal results, maintain a consistent screw spacing as specified by the drywall manufacturer and ensure the screwdriver is set to the correct depth to prevent damage to the gypsum board core.

## FAQ

### How much does the Knauf TN25 Drywall Screws 3.5x25mm cost, and is it available for purchase?

The price is 17.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 33 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/12503892/68843885_large.webp