# Thread adapter BIG 1/4 inch 20x15mm model 428286 — metal thread reducer

**URL:** https://aio.lv/en/product--big-428286--1894908
**Data updated:** 2025-12-29 07:52 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** BIG
**Manufacturer code:** 428286
**EAN:** 4741326404443
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--big-428286--1894908

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.06.2026 | free |
| Pickup points | 18.06.2026 | 1.99 EUR |
| Courier delivery to door | 18.06.2026 | 4.99 EUR |

## Summary description

Thread adapter BIG model 428286 with 1/4 inch 20x15mm dimensions. Designed to connect components with differing thread sizes, this metal adapter provides a compact, durable connection solution for pneumatic, workshop or hobby applications. Use it to join tools, hoses or fittings that require conversion between 1/4" threads and 15mm connections, ensuring reliable mechanical coupling.

## Long description

BIG 20 mm thread adapter model 428286 is a brass 1/4" inner-thread reducer with 20x15 mm dimensions. It is designed to connect components with differing thread sizes, providing a compact and durable metal solution for pneumatic, workshop, or hobby applications. Use it to join tools, hoses, or fittings that require conversion between 1/4" threads and 15 mm connections to ensure a reliable mechanical coupling.
Advantages
The brass construction offers good corrosion resistance and mechanical strength while maintaining a compact form factor. The 1/4" inner thread and 20x15 mm sizing provide compatibility between common pneumatic and workshop fittings. As a metal thread reducer, the adapter delivers stable mechanical connection and long service life under typical workshop and hobby use.
Suitable for
Connecting pneumatic tools and hoses with different thread sizes
Workshop fittings and compressed air systems
Hobby and DIY projects requiring thread conversion
Key specifications
Brand: BIG
Model/MPN: 428286
EAN: 4741326404443
Material: Brass
Inner thread: 1/4"
Dimensions: 20x15 mm
Type: Metal thread reducer / adapter
How to use
Thread the adapter by hand onto the matching 1/4" male or female fitting until snug, then tighten with an appropriate wrench if required for a secure connection. Ensure mating threads are clean and undamaged before assembly. Use thread sealant or tape where necessary to prevent air or fluid leaks, following the specifications of the system in which the adapter is installed.
Usage recommendations
For reliable performance, inspect threads regularly for wear or damage and replace the adapter if deformation or significant wear is observed. Avoid overtightening to prevent thread stripping; apply standard workshop torque practices when securing metal fittings.

## FAQ

### How much does the Thread adapter BIG 1/4 inch 20x15mm 428286 cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 15.06.2026 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 BIG 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 BIG 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/1894908/3908434_large.webp