# Wall plug Fischer DuoHM 4 x 55 S PH PZ Grey 4 mm Diameter 55 mm Length

**URL:** https://aio.lv/en/product--fischer-572920--11002657
**Data updated:** 2026-01-06 11:18 (EET)
**Category:** Home Goods Accessories
**Manufacturer:** FISCHER
**Manufacturer code:** 572920
**EAN:** 4048962523980
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fischer-572920--11002657

## 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

Fischer DuoHM 4 x 55 S PH PZ wall plugs are designed for secure anchoring in various materials. They feature a 4 mm diameter and 55 mm length, suitable for M4 screws. The package includes 25 wall plugs and screws, making it ideal for multiple applications. The grey color ensures a discreet look in installations.

## Long description

Fischer DuoHM wall plug (4 x 55 S PH PZ) is a cavity anchor designed to secure attachments in panel building materials with thicknesses from 9.5 to 30 mm. The plug combines a nylon base body and a metal sleeve to form a reliable anchor for M4 screws; the delivered set includes plugs and matching screws. Its narrow edge keeps the fixing hidden behind the mounted part, and the metric internal thread allows repeated screwing and unscrewing.
Advantages
The DuoHM installs quickly and easily with a cordless screwdriver without additional setting tools, cutting installation time by up to 50% versus conventional panel plugs. Its two-component construction—metal sleeve and nylon base—provides high load capacity: the metal sleeve folds and presses against the back of the panel while the nylon body knots in the material. One plug length covers common panel thicknesses from 9.5–30 mm for flexible and cost-efficient use. A nylon anti-rotation lock prevents rotation during installation and protects the surface of the building material. The metric internal thread allows the screw to be removed and refitted multiple times, and the plug accepts standard metric screws in addition to the supplied ones.
Suitable for
Mounting fixtures to plasterboard, gypsum fibreboard and other panel building materials
Fixing light to medium-weight items where panel thickness is 9.5–30 mm
Applications requiring repeated removal and reinstallation of screws (M4)
Key specifications
Brand: FISCHER
Model: DuoHM 4 x 55 S PH PZ
Diameter: 4 mm
Length: 55 mm
Suitable screw size: M4 (metric internal thread)
Suitable panel thickness: 9.5–30 mm
Material: Nylon base body with metal sleeve
Colour: Grey
Package contents: 25 wall plugs and screws (as supplied)
MPN: 572920
EAN: 4048962523980
How to use
Drill a hole to the plug diameter, insert the Fischer DuoHM plug into the panel until the narrow edge sits flush, then drive the supplied M4 screw with a compatible PH or PZ bit using a cordless screwdriver. The metal sleeve will fold and clamp against the rear of the panel while the nylon body forms a knot in the material. To remove the attachment, unscrew the screw; the metric internal thread allows multiple reinsertions of the screw. If required, you may use other standard M4 screws compatible with the plug.
Usage recommendations
Use the DuoHM plug only in appropriate panel building materials within the specified thickness range (9.5–30 mm) and with M4 screws. For optimum performance, follow drilling diameter and installation depth recommendations and avoid using the plug in unsuitable base materials such as solid masonry.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Grey |
| Length | 55 mm |
| Diameter | 4 mm |
| Package type | Box |
| Screw type | Pozidriv |
| Product type | Wall plug |
| Screw drive size | PZ2 |
| Minimum drill hole depth | 55 mm |
| Maximum fixture thickness | 10 mm |
| Drill hole diameter | 8 mm |
| Minimum cavity depth | 45 mm |
| Screw anchors included in set | 25 x DuoHM 4 x 55 |
| Screws included in set | 25 x Screw M4 x 55 |
| Panel thickness (min) | 9.5 mm |
| Panel thickness (max) | 30 mm |

## FAQ

### How much does the Wall plug Fischer DuoHM 4 x 55 S PH PZ cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 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

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