# Screw with mushroom head and serrated flange nut Baks SGKFM8X20 for photovoltaic structures

**URL:** https://aio.lv/en/product--baks-651820--12114228
**Data updated:** 2026-03-20 10:06 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** Baks
**Manufacturer code:** 651820
**EAN:** 5900993226454
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--baks-651820--12114228

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Screw set Baks SGKFM8X20 includes a mushroom-head screw and a serrated flange nut designed for photovoltaic (PV) mounting structures. Intended for mechanical fastening in solar panel frames and racking systems, the set provides secure clamping and resistance to loosening thanks to the serrated flange. Suitable for outdoor PV installations where reliable threaded connections are required.

## Long description

Screw set Baks SGKFM8X20 combines a mushroom-head screw and a serrated flange nut engineered for fastening photovoltaic mounting structures. The components are intended for mechanical joining in solar panel frames and racking systems, providing a clamped connection between metal profiles and module carriers. The serrated flange nut reduces the risk of loosening under vibration and thermal cycling common in outdoor solar installations.
Advantages
The mushroom-head screw offers a low-profile, rounded head that distributes load over a wider surface while minimizing interference with adjacent components. The serrated flange nut integrates a toothed flange that bites into the mating surface to increase friction and resist rotational loosening. Together the pair delivers a straightforward, maintenance-friendly fastening solution for PV structures where reliable threaded connections are required.
Suitable for
Fastening solar panel frames to aluminium or steel rails
Securing racking system cross-members and brackets
Applications requiring vibration-resistant threaded joints
Outdoor PV installations exposed to temperature changes and wind loads
Key specifications
Head type: mushroom (rounded, low-profile) screw head
Nut type: serrated flange nut for increased anti-rotation
Size designation: M8 x 20 (nominal thread diameter and length)
Primary application: mechanical fastening for photovoltaic mounting structures
Design features: flange serration for improved clamping friction
How to use
Position the screw through the component to be fastened and engage the serrated flange nut on the mating fastening surface. Tighten to the torque recommended for M8 fasteners in the specific material of the mounting profile, ensuring the flange teeth seat against the surface to provide anti-rotation action. Inspect the joint after installation to confirm correct engagement and torque; re-check periodically in accordance with PV system maintenance intervals.
Usage recommendations
Use appropriate corrosion-resistant materials and coatings compatible with the mounting structure; where dissimilar metals are combined, consider protective measures to prevent galvanic corrosion. Apply the manufacturer-recommended torque values for M8 fasteners and avoid over-tightening that could strip threads or deform thin-walled profiles.

## FAQ

### How much does the Baks SGKFM8X20 screw and serrated flange nut cost, and is it available for purchase?

The price is 27.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 25 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 06.07.2026 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 Baks 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 Baks 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/12114228/67649588_large.webp