# Self-tapping screw Koelner/Rawlplug 3.5x20 mm stainless steel, pack 22 pcs (16 blisters)

**URL:** https://aio.lv/en/product--koelnerrawlplug-b-uc-s-3520-a2--11800370
**Data updated:** 2026-03-09 07:38 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Koelner/Rawlplug
**Manufacturer code:** B-UC-S-3520-A2
**EAN:** 5906675426891
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 17.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 14.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koelnerrawlplug-b-uc-s-3520-a2--11800370

## 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-tapping screw by Koelner/Rawlplug, size 3.5 x 20 mm, made of stainless steel. Supplied as a set of 22 screws packaged in 16 blisters. Designed for fastening tasks in metal, wood and plastics where corrosion resistance is required. Suitable for general assembly, repairs and installation work requiring durable, rust-resistant fasteners.

## Long description

Self-tapping screw Koelner/Rawlplug 3.5x20 mm in stainless steel is a compact fastener designed for corrosion-resistant joining of thin materials. The 3.5 x 20 mm size provides a balance between grip length and low-profile head, making these screws suitable for a variety of light- to medium-duty fastening tasks. The pack contains 22 screws supplied in 16 blisters for convenient storage and controlled dispensing on the job.
Advantages
Made from stainless steel to resist rust and corrosion, these self-tapping screws maintain mechanical integrity in indoor and outdoor environments. Their self-tapping thread eliminates the need for pre-tapped holes in many materials, speeding up assembly and repair work. The small 3.5 mm diameter reduces splitting risk in thin woods and plastics while the 20 mm length offers sufficient penetration for secure joins without excessive protrusion.
Suitable for
 Fastening thin metal sheets and light-gauge steel components
 Joining wood panels, trims and molding in furniture or interior works
 Mounting plastic parts, housings and cable clips
 General assembly, repair and installation tasks requiring corrosion-resistant fasteners
Key specifications
 Material: stainless steel (corrosion-resistant)
 Diameter: 3.5 mm
 Length: 20 mm
 Head/profile: self-tapping screw geometry suitable for cutting threads into base material
 Quantity per pack: 22 screws supplied in 16 blister packs
How to use
Select an appropriate screwdriver or driver bit that matches the screw head. For harder base materials, consider drilling a pilot hole slightly smaller than the screw core diameter to reduce insertion torque and prevent material stress. Insert the screw perpendicular to the surface and drive at moderate speed until the head is flush or reaches the required seating depth. Avoid overtightening to prevent stripping the formed thread or damaging the workpiece.
Usage recommendations
Use these stainless steel self-tapping screws in applications where corrosion resistance is important, such as damp indoor areas or outdoor fixtures; store blister packs in a dry place and keep spare blisters for future maintenance needs.

## FAQ

### How much does the Self-tapping screw Koelner/Rawlplug 3.5x20 mm 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 — 368 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. 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/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/11800370/68519929_large.webp