# Adapter Marcrist 1/2 BSP(M) to 1/4 UNC(M) — pipe thread reducer coupling

**URL:** https://aio.lv/en/product--marcrist-mc3401000047--12028529
**Data updated:** 2026-03-12 16:37 (EET)
**Category:** Tool kits and accessories
**Manufacturer:** Marcrist
**Manufacturer code:** MC340.100.0047
**EAN:** 5036197025941
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 94.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 78.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--marcrist-mc3401000047--12028529

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Thread adapter Marcrist with male 1/2 BSP and male 1/4 UNC threads. Designed to connect components with differing thread standards, it serves as a reducer coupling for fluid, pneumatic or mechanical systems where BSP and UNC interfaces must be joined. Suitable for installation in fittings, hoses, valves and adapters requiring male-to-male conversion.

## Long description

Adapter Marcrist 1/2 BSP(M) to 1/4 UNC(M) is a threaded reducer coupling designed to join components with different thread standards. Manufactured for use in fluid, pneumatic and mechanical systems, this male-to-male adapter enables connection between a 1/2" BSP thread and a 1/4" UNC thread, allowing integration of fittings, hoses, valves and adapters that otherwise would be incompatible.
Advantages
The adapter provides a compact solution for converting between BSP and UNC thread types without requiring additional hose assemblies or custom machining. Its male-to-male configuration simplifies installation in confined spaces and reduces the number of connection points. Designed for durability, the coupling maintains thread integrity under standard operating conditions typical for hydraulic, pneumatic and general-purpose mechanical systems.
Suitable for
Connecting BSP-threaded hoses, valves or fittings to devices with UNC threads
Retrofit and repair work where mixed-thread components must be joined
Fluid and pneumatic lines in workshops and industrial installations
Mechanical assemblies requiring a male-to-male thread conversion
Key specifications
Thread A: 1/2" BSP male
Thread B: 1/4" UNC male
Function: reducer coupling / male-to-male thread adapter
Application: fluid, pneumatic and mechanical connections
Typical installation: fittings, hoses, valves and adapters
How to use
Select the adapter when a direct connection between a 1/2" BSP male thread and a 1/4" UNC female thread is required. Ensure mating threads are clean and undamaged, then engage the adapter by hand to align threads before tightening with appropriate wrenches. Use suitable thread sealant or tape when connecting fluid or pneumatic lines to ensure leak-free joints, following the sealant manufacturer's recommendations. Avoid over-tightening to prevent thread deformation.
Usage recommendations
Verify compatibility of materials and pressure ratings of the surrounding system before installation. For pressurized fluid or gas systems, perform a pressure test after fitting and re-check connections periodically as part of routine maintenance.

## FAQ

### How much does the Adapter Marcrist 1/2 BSP(M) to 1/4 UNC(M) cost, and is it available for purchase?

The price is 94.99 € (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 14.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Adapter Marcrist 1/2 BSP(M) to 1/4 UNC(M) be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Marcrist 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 Marcrist 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/12028529/67516405_large.webp