# Self‑drilling Phosphated Screw 3.5x25 mm by Koelner/Rawlplug — container pack, 6 pcs

**URL:** https://aio.lv/en/product--koelnerrawlplug-k-sl3-ws-3525--11800648
**Data updated:** 2026-03-09 07:39 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Koelner/Rawlplug
**Manufacturer code:** K-SL3-WS-3525
**EAN:** 5906675302188
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 99.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 82.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koelnerrawlplug-k-sl3-ws-3525--11800648

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Self‑drilling phosphated screw 3.5x25 mm from Koelner/Rawlplug supplied in a container pack of 6 pieces. Designed for fastening in thin metal and some composite materials without predrilling, featuring a phosphate surface treatment for corrosion resistance and improved thread engagement. Suitable for assembly, sheet metal work and light construction tasks.

## Long description

Self‑drilling phosphated screw 3.5x25 mm by Koelner/Rawlplug supplied in a container pack of 6 pieces. This fastener is designed to drill and form its own mating thread in thin sheet metal and certain composite panels without the need for a separate pilot hole. The phosphate surface treatment provides basic corrosion resistance and enhances lubricity for consistent thread forming and reliable holding power in light assembly and sheet metal applications.
Advantages
The self‑drilling point eliminates predrilling in many thin metal substrates, saving time on repetitive fastening tasks. The phosphate coating improves resistance to surface oxidation and reduces driving torque for smoother installation. Its compact 3.5x25 mm size balances holding strength with minimal material disruption, and the container pack of six keeps screws organized and ready for small jobs or sample use.
Suitable for
 Fastening thin steel sheets and light gauge metal panels
 Assembly of metal enclosures, ducts and brackets
 Attaching metal to metal or metal to certain composite substrates
 Small repair and light construction tasks where quick installation is needed
Key specifications
 Nominal diameter: 3.5 mm
 Length: 25 mm (overall)
 Head type: pan/washer style suitable for screwdriver or driver bit
 Drive type: compatible with common driver bits (e.g., Phillips or Pozidriv depending on variant)
 Point type: self‑drilling (integrated drill tip)
 Surface finish: phosphate coating for basic corrosion resistance and reduced driving friction
 Pack quantity: 6 pieces in a container
How to use
Select an appropriate driver bit that matches the screw drive. Position the screw perpendicular to the workpiece and apply steady axial pressure while driving at moderate speed so the self‑drilling tip can penetrate and form a mating thread. Avoid excessive speed or lateral force to prevent damage to the screw head or substrate. For thicker materials, check material compatibility and consider predrilling if the screw cannot form a proper thread.
Usage recommendations
Use these screws in dry or mildly corrosive indoor environments; apply additional protection or select a different surface treatment for prolonged outdoor exposure. Match screw length to material thickness to ensure adequate thread engagement without protrusion. Test on a scrap piece when working with composite panels to confirm suitability and driving technique.

## FAQ

### How much does the Self‑drilling Screw 3.5x25 mm Koelner/Rawlplug cost, and is it available for purchase?

The price is 99.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 150 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 10.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Self‑drilling Screw 3.5x25 mm Koelner/Rawlplug be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/Rawlplug 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/Rawlplug 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/11800648/67202052_large.webp