# Air compressor accessory Proline 66310 — 1/4" connecting thread (male/female)

**URL:** https://aio.lv/en/product--proline-5663108--10786479
**Data updated:** 2026-03-12 10:13 (EET)
**Category:** Air Compressors
**Manufacturer:** Proline
**Manufacturer code:** 5663108
**EAN:** 5903755663108
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 2.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-5663108--10786479

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

Proline 66310 is an air compressor accessory featuring a 1/4" connecting thread for pneumatic fittings and hoses. Designed for use with standard compressed-air tools and systems, it provides a threaded connection point for reliable attachment of couplers, adapters or extensions. Suitable for workshop and industrial applications where a 1/4" thread interface is required.

## Long description

Proline quick connector with external thread is designed for connecting pneumatic system components, providing a fast and secure connection between air supply parts. The connector features a 1/4" external thread and is made from quality materials to provide durability and resistance to high pressure.
Advantages
The Proline quick connector offers rapid assembly and disassembly, reliable sealing under pressure, and sturdy construction for extended service life. Its standardized 1/4" external thread ensures compatibility with common pneumatic fittings.
Suitable for
Connecting air hoses to pneumatic tools and valves
Workshop compressed air lines and distribution systems
Maintenance and repair tasks requiring quick coupling
Industrial and hobby pneumatic applications using 1/4" threads
Key specifications
Brand: Proline
Model / MPN: 5663108
EAN: 5903755663108
Thread type: 1/4" external (male) thread
Application: pneumatic quick connector for air supply components
How to use
Ensure the mating fitting and thread are clean and undamaged. Screw the connector into the corresponding 1/4" female thread until hand-tight, then use an appropriate tool to secure it without over-tightening. Connect the hose or quick coupler to the connector and check for leaks under pressure before use.
Usage recommendations
Use compatible 1/4" female fittings and maintain recommended operating pressure limits for your pneumatic system. Inspect the connector periodically for wear or damage and replace if any sealing issues are detected.

## Specifications

| Feature | Value |
|---|---|
| Connecting thread | 1/4 |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Air compressor accessory Proline 66310 1/4" thread 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 — 304 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 19.06.2026 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 Proline 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 Proline 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/10786479/64449330_large.webp