# Hollow construction dowel FISCHER DuoHM 5x55 S PH TX, pack of 4

**URL:** https://aio.lv/en/product--fischer-4048962523935--11518249
**Data updated:** 2026-04-16 13:25 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** FISCHER
**Manufacturer code:** 4048962523935
**EAN:** 4048962523935
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fischer-4048962523935--11518249

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Hollow construction dowel FISCHER DuoHM 5x55 S PH TX in a pack of 4. Designed for fastening in hollow building materials, this dowel combines a composite sleeve and screw for secure anchoring. Size 5x55 mm with Philips/torx drive (PH TX) offers reliable load transfer for fixtures like light shelves, conduits and fittings. Suitable for interior mounting where hollow substrate fixing is required.

## Long description

Hollow construction dowel FISCHER DuoHM 5x55 S PH TX, pack of 4 is a combined sleeve-and-screw anchor designed for secure fixing in hollow building materials. The 5x55 mm dimensions make it suitable for medium-duty interior attachments where the substrate has cavities or hollow cores. The PH/TX drive head provides straightforward tightening and reliable engagement for installations such as light shelving, conduit clamps and sanitary fittings.
Advantages
The DuoHM system integrates a composite sleeve and a matched screw to create a stable connection in hollow substrates. Its design distributes loads across the sleeve to reduce point stress on fragile materials while the screw drive ensures defined torque transmission. The compact 5x55 size accommodates common inner-wall cavity depths and the included PH/TX head improves installation speed with standard bits. Supplied as a pack of four, it is convenient for small projects and replacements.
Suitable for
Mounting light shelves and small cabinets to hollow walls
Securing conduit clips, cable trays and electrical boxes in hollow substrates
Fixing sanitary fittings, towel rails and small brackets to partition walls
When it may not be suitable
This dowel is intended for hollow or cavity building materials and for medium-duty loads; it may not be suitable for solid masonry such as concrete or full brick where different anchor types are preferred. For heavy structural loads, large appliances or safety-critical attachments, a high-capacity anchor system or mechanical fixings designed for the specific substrate should be chosen.
Key specifications
Anchor type: hollow construction sleeve with matched screw
Size: 5 x 55 mm (diameter x length)
Drive type: combined Philips / Torx (PH TX)
Material: composite sleeve with metal screw
Pack contents: 4 complete anchors
How to use
Drill a hole matching the 5 mm diameter recommendation, clean the hole of dust and position the dowel so the sleeve sits flush with the surface. Insert the screw and tighten with a compatible Philips or Torx bit until the sleeve expands or folds to engage the hollow cavity. Tighten to a steady torque appropriate for the substrate and the fixture; avoid overtightening which can deform the sleeve or damage the hollow material.
What to consider before purchase
Confirm the substrate is hollow or has a cavity suitable for a hollow-wall anchor
Check required load capacity for your fixture and choose an anchor rated for that load
Ensure you have the correct drill bit and a compatible PH/TX driver bit
Usage recommendations
Use the DuoHM 5x55 S PH TX for light to medium interior fixings in plasterboard, hollow block and similar hollow wall constructions. Always follow recommended drill diameters and mounting instructions for reliable performance and check each fixing after installation for secure engagement.

## FAQ

### How much does the Hollow construction dowel FISCHER DuoHM cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 27 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 15.07.2026 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. 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 FISCHER 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 FISCHER 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/11518249/66534650_large.webp