# Koelner FT-3535 Phosphate Coated Drywall Screw for Wood Framing 3.5x35mm 1000 pcs

**URL:** https://aio.lv/en/product--koelner-ft-3535--12328583
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** Koelner
**Manufacturer code:** FT-3535
**EAN:** 5906675300221
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 16.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koelner-ft-3535--12328583

## 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 FT-3535 phosphate-coated screws designed for mounting drywall panels to wooden frames. These 3.5x35mm screws feature a sharp point for easy penetration and a durable finish to prevent corrosion. Ideal for professional construction and interior finishing projects, this pack contains 1000 pieces, ensuring reliable fastening for various wall and ceiling installations.

## Long description

The Koelner FT-3535 phosphate-coated drywall screw is a specialized fastener engineered for the secure attachment of gypsum plasterboard panels to wooden framing structures. Measuring 3.5x35mm, these screws are designed to provide a reliable hold in residential and commercial interior finishing applications. The phosphate coating offers a basic level of corrosion resistance, making them suitable for standard indoor environments where moisture levels are controlled.
Advantages
These screws feature a precision-engineered sharp point that allows for rapid and effortless penetration into wooden studs, significantly reducing the time required for installation. The trumpet head design ensures that the screw sits flush with the surface of the drywall without damaging the paper layer, providing a smooth finish that is easy to cover with joint compound. The durable phosphate finish provides a consistent surface that adheres well to finishing materials, while the robust steel construction ensures long-term structural integrity for wall and ceiling assemblies.
Suitable for
Mounting gypsum boards to wooden wall frames
Installing plasterboard on wooden ceiling joists
General interior renovation and construction projects
Professional drywall installation tasks
When it may not be suitable
These screws are not intended for use in outdoor environments or areas with high humidity, as the phosphate coating does not provide sufficient protection against rust in such conditions. They are also not suitable for fastening drywall to metal profiles, as the thread geometry is specifically optimized for wood.
Key specifications
Dimensions: 3.5mm diameter by 35mm length
Material: Carbon steel with phosphate coating
Head type: Trumpet head
Point type: Sharp point for wood
Quantity: 1000 pieces per pack
How to use
To use these screws, align the drywall panel with the wooden frame and use a power screwdriver equipped with a depth-sensitive bit. Position the screw perpendicular to the surface and drive it in until the head is slightly recessed below the surface of the board without breaking the paper facing. Ensure that the screw is driven deep enough to allow for proper finishing but not so deep that it compromises the structural hold of the board.
What to consider before purchase
Verify that the 35mm length is appropriate for the thickness of your drywall panels
Ensure the framing material is wood, not metal
Confirm the total number of screws required for your project area
Check that your screwdriver bit matches the drive type of the screw
Usage recommendations
For optimal results, use a drywall screwdriver with an adjustable depth stop to prevent over-driving the screws. Ensure that the wooden frame is dry and free from debris before beginning the installation to maintain a secure grip.

## FAQ

### How much does the Koelner FT-3535 Drywall Screw for Wood 3.5x35mm 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 — 24 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

https://aio.lv/img/cache/product/12328583/68248551_large.webp