# Massa adapter M42 to M39 threaded mount SB1703 — camera lens adapter

**URL:** https://aio.lv/en/product--massa-sb1703--11420405
**Data updated:** 2026-03-07 20:07 (EET)
**Category:** Camera Lenses
**Manufacturer:** Massa
**Manufacturer code:** SB1703
**EAN:** 5904647820043
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--massa-sb1703--11420405

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Mechanical lens adapter Massa SB1703 converts M42 threaded mount to M39 threaded mount, allowing attachment of M42 lenses to M39-bodied equipment. Metal construction ensures stable connection and accurate alignment. Useful for photographers and technicians who need compatibility between M42 lenses and M39 mounts for rangefinder cameras, microscopes or custom rigs.

## Long description

The Massa adapter M42 to M39 threaded mount SB1703 is a mechanical adapter that enables the use of M42 screw-mount lenses on equipment with an M39 threaded mount. Constructed from metal, the adapter provides a stable mechanical connection and precise alignment between lens and body, allowing photographers and technicians to adapt cameras, rangefinder bodies, microscopes or custom rigs that require M39 fittings while retaining the optical characteristics of M42 lenses.
Advantages
The adapter offers a robust metal construction that resists wear and maintains reliable thread engagement during repeated mounting and dismounting. Its precise machining ensures concentricity and correct flange spacing for straightforward lens installation. As a purely mechanical solution without optical elements, it preserves the original optical performance of the attached lens and adds minimal additional distance to the optical path.
Suitable for
 Mounting M42 screw-mount lenses on M39-bodied rangefinder cameras
 Adapting M42 lenses for use with microscopes or laboratory optics that accept M39 threads
 Custom camera rigs and DIY projects requiring M42-to-M39 compatibility
 Photographic technicians or hobbyists consolidating lens collections across different mounts
Key specifications
 Mount conversion: accepts M42 screw-mount lenses and provides M39 threaded interface
 Material: metal construction for durability and stable connection
 Type: mechanical adapter without optical elements
 Surface finish: machined metal surface for precise thread engagement
 Compatibility: designed to match standard M42 and M39 thread dimensions
How to use
Screw the adapter onto the rear of an M42 lens using the M42 internal thread, then mount the assembly onto the target device by threading the adapter into the M39 mount. Ensure threads are clean and free of debris before installation to prevent cross-threading. Hand-tighten to secure the connection; avoid excessive force. Confirm correct seating and alignment visually and, where available, check focus and exposure on the camera or optical instrument after mounting.
Usage recommendations
For repeatable, safe operation, store the adapter in a dry environment to avoid corrosion and protect threads with caps when not in use. When using on rangefinder cameras or optical instruments, verify flange distance and compatibility to ensure proper focusing; some combinations may require additional adjustment or focusing aids. Regularly inspect the threads and mating surfaces for wear and clean with appropriate tools to maintain reliable performance.

## FAQ

### How much does the Massa adapter M42 to M39 SB1703 cost, and is it available for purchase?

The price is 9.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 02.07.2026 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 Massa 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 Massa 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/11420405/66063210_large.webp