---
product_id: 34873097
title: "1/4 inch to 3mm Stainless Steel Set Screw Shaft Coupler"
brand: "actobotics"
price: "₨3563"
currency: LKR
in_stock: true
reviews_count: 1
url: https://www.desertcart.lk/products/34873097-1-4-inch-to-3mm-stainless-steel-set-screw-shaft
store_origin: LK
region: Sri Lanka
---

# 1/4 inch to 3mm Stainless Steel Set Screw Shaft Coupler

**Brand:** actobotics
**Price:** ₨3563
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 1/4 inch to 3mm Stainless Steel Set Screw Shaft Coupler by actobotics
- **How much does it cost?** ₨3563 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/34873097-1-4-inch-to-3mm-stainless-steel-set-screw-shaft)

## Best For

- actobotics enthusiasts

## Why This Product

- Trusted actobotics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

These stainless steel shaft couplers allow you to couple two size shafts together. They can be used for connecting motor shafts to drive shafts, or two different-sized shafts. These shaft couplers have a length of 0.75”, a outer diameter of 0.42”, and couple 3/16” to 3/16" shafts.

## Features

- Material = 303 Stainless Steel
- These shaft couplers require a 3/32 hex key

## Images

![1/4 inch to 3mm Stainless Steel Set Screw Shaft Coupler - Image 1](https://m.media-amazon.com/images/I/51uhiAbB2fL.jpg)
![1/4 inch to 3mm Stainless Steel Set Screw Shaft Coupler - Image 2](https://m.media-amazon.com/images/I/51rEwGAm-5L.jpg)
![1/4 inch to 3mm Stainless Steel Set Screw Shaft Coupler - Image 3](https://m.media-amazon.com/images/I/31NP1BtTp5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    1/4" was too big, and the 3mm was too ...
  

*by J***D on Reviewed in the United States on April 10, 2015*

Had issue with coupler and shaft not fitting even though both specs stated 3mm, with no caliber on hand and unable to determine the problem, Gustav from Karlsson Robotics Customer Service gave me ideas for solutions since I was short on time, but also offered to exchange for a 1/8".

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**Shop now:** [https://www.desertcart.lk/products/34873097-1-4-inch-to-3mm-stainless-steel-set-screw-shaft](https://www.desertcart.lk/products/34873097-1-4-inch-to-3mm-stainless-steel-set-screw-shaft)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-11*