# Hex Socket Head Cap Screw M8x40 8.8 — Dedra SI-M8X40/KL-8.8

**URL:** https://aio.lv/en/product--dedra-si-m8x40kl-88--11963114
**Data updated:** 2026-03-11 14:04 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Dedra
**Manufacturer code:** SI-M8X40/KL-8.8
**EAN:** 5902887078750
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 2.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dedra-si-m8x40kl-88--11963114

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Dedra SI-M8X40/KL-8.8 is a hex socket head cap screw (imbus) sized M8 × 40 mm with a strength class of 8.8. Designed for assembling machinery, metal structures and equipment, it provides high tensile strength and reliable clamping. Suitable for use with matching nuts and threaded holes in construction, automotive and industrial repair tasks.

## Long description

Dedra SI-M8X40/KL-8.8 is a hex socket head cap screw M8x40 with a strength class of 8.8, designed for mechanical assembly, metal construction and equipment fastening. The screw features a cylindrical head with an internal hex drive for torque transfer using an Allen key or hex bit. Its medium-high tensile strength and standardized metric thread make it suitable for secure clamping in machinery, automotive repairs and industrial installations where reliable joint integrity is required.
Advantages
The hex socket head allows compact installation in confined spaces while providing accurate tightening control. Strength class 8.8 ensures a balance between tensile strength and toughness for durable joints under moderate to high loads. Metric M8 thread and 40 mm length make the fastener compatible with common nuts and tapped holes, supporting straightforward replacement and interchangeability in repair and assembly tasks.
Suitable for
 Assembling machinery frames and metal structures
 Fastening components in automotive maintenance and repairs
 Industrial equipment installation and service
 General mechanical repairs and retrofit work
Key specifications
 Size: M8 × 40 mm
 Head type: hex socket (Allen) cylindrical head
 Strength class: 8.8 (medium-high tensile strength)
 Thread type: metric coarse thread
 Drive: internal hex socket compatible with Allen keys and hex bits
How to use
Select a matching nut or a threaded hole with compatible M8 metric thread depth suitable for the 40 mm length. Insert the screw through the parts to be joined, engage the nut or thread, and tighten using the correctly sized Allen key or hex bit. Apply torque gradually and evenly to achieve the recommended preload for the application; avoid over-tightening to prevent thread or fastener damage. Where applicable, use threadlocker or a spring washer to prevent loosening under vibration.
Usage recommendations
Use the screw in applications compatible with strength class 8.8; for corrosive environments select appropriate surface protection or stainless alternatives. Ensure the Allen key fits the internal hex precisely to avoid stripping the head, and verify thread engagement length to maintain joint safety.

## FAQ

### How much does the Hex Socket Screw M8x40 8.8 — Dedra cost, and is it available for purchase?

The price is 2.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 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 13.07.2026 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 Dedra 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 Dedra 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/11963114/67408888_large.webp