# Wing Bolts (machine screws) Koelner DIN 316 M8x40 mm zinc-plated, pack of 2

**URL:** https://aio.lv/en/product--koelner-b-316-08040-zn2--11800607
**Data updated:** 2026-03-09 07:39 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Koelner
**Manufacturer code:** B-316-08040-ZN/2
**EAN:** 5906675433356
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koelner-b-316-08040-zn2--11800607

## 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 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Koelner wing bolts DIN 316 M8x40 mm, zinc-plated, pack of 2. These fasteners feature a threaded M8 shank with 40 mm length and an integrated wing-style head for manual tightening without tools. Manufactured to DIN 316 dimensions and corrosion-resistant due to zinc plating. Suitable for light assembly, fixtures, panels and maintenance tasks where quick hand adjustment and secure fastening are required.

## Long description

Koelner wing bolts DIN 316 M8x40 mm, zinc-plated, pack of 2 are threaded fasteners with a wing-style head designed for manual tightening and quick adjustment without tools. Manufactured to DIN 316 dimensions, each bolt has an M8 threaded shank with a 40 mm overall length and a zinc-plated finish that offers basic corrosion resistance for general indoor and sheltered outdoor applications. These wing bolts are intended for light assembly, fixtures, panels and maintenance tasks where repeated hand-operated fastening and easy removal are required.
Advantages
The wing-style head enables tool-free installation and removal, allowing rapid hand tightening and loosening. Zinc plating provides a protective layer against rust and environmental exposure in typical non-critical conditions. Compliance with DIN 316 dimensions ensures interchangeability with other components specified to the same standard. Supplied as a pack of two, these bolts are convenient for small repair jobs or when paired fasteners are needed for panels and fixtures.
Suitable for
 Light furniture assembly and panel fixing
 Temporary fixtures and removable covers
 Maintenance tasks requiring frequent hand adjustments
 Applications where tool-free fastening is preferred
Key specifications
 Thread size: M8
 Length (shank): 40 mm
 Head type: wing-style head for manual tightening
 Standard: manufactured to DIN 316 dimensions
 Finish: zinc-plated for basic corrosion resistance
 Pack quantity: 2 pieces
 Material: steel (zinc-plated)
How to use
Insert the threaded shank through the aligned holes of the components to be fastened, then engage with a corresponding M8 nut or into a threaded insert and tighten by hand using the wing head until secure. For increased clamping force, use pliers on the wing edges carefully while avoiding damage to the plating. To remove, reverse the process by loosening the wing head by hand and withdrawing the bolt. Ensure mating threads are clean and undamaged before reuse.
Usage recommendations
Use these zinc-plated wing bolts in indoor or sheltered outdoor environments to avoid accelerated corrosion. For assemblies exposed to persistent moisture, salty air or high mechanical loads, consider stainless or higher-corrosion-resistance alternatives. Store unused bolts in a dry place to maintain the protective finish.

## FAQ

### How much does the Wing Bolts Koelner DIN 316 M8x40 mm cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 528 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 Koelner 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 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/11800607/67202005_large.webp