---
product_id: 129681369
title: "4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench"
brand: "s sydien"
price: "€ 19.77"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/129681369-4pcs-8mm-rigid-flange-shaft-coupling-motor-guide-shaft-coupler
store_origin: DE
region: Germany
---

# M4 fastening & base screw holes 8mm precision inner diameter Hardened electroplated alloy steel 4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench

**Brand:** s sydien
**Price:** € 19.77
**Availability:** ✅ In Stock

## Summary

> ⚙️ Lock in precision, power your projects with confidence!

## Quick Answers

- **What is this?** 4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench by s sydien
- **How much does it cost?** € 19.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/129681369-4pcs-8mm-rigid-flange-shaft-coupling-motor-guide-shaft-coupler)

## Best For

- s sydien enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Small 16mm diameter and 10mm height design saves space without compromising strength.
- • **Rock-Solid Durability:** Heat-treated, electroplated alloy steel resists rust and oil, built to last in demanding environments.
- • **Quick & Secure Assembly:** Includes M4 fastening screws and mini hex wrench for fast, reliable installation every time.
- • **Versatile Compatibility:** Perfect for RC models, motor shafts, and any precision shaft coupling needs.
- • **Precision Fit, Zero Play:** 8mm inner diameter ensures seamless shaft alignment for flawless motor performance.

## Overview

This 4-piece set of 8mm flange shaft couplings features hardened, electroplated alloy steel construction for superior durability and corrosion resistance. Designed with M4 fastening screws and a mini hex wrench, it offers quick, secure assembly and precise shaft alignment. Compact yet robust, these couplings are ideal for RC models and motor shaft connections, delivering industrial-grade performance in a sleek package.

## Description

4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench

## Features

- Package Content:4Pcs Flange Shaft Couplings with 1Pc Mini Hex Wrench with Some Fastening Screws.Inner Diameter:8mm/0.31''.Fastening Screw Hole:M4.Base Fixing Screw Hole:M4.Cylinder Outer Diameter:16mm/0.63''.Cylinder Height:10mm/0.39''.Base Diameter:32mm/1.26''.Base Height:3mm/0.12''
- HIGH QUALITY:Made of fine plating steel which is hardened by heat treatment and electroplated.Its hardness is more better than ordinary copper and aluminum alloy material. Anti-oil and anti-rust
- LOW INERTIA:Flange shaft couplings is so highly sensitive that can quickly switch the working state
- EXCELLENT PERFORMANCE:Compact structure and small size.It can effectively ensure the alignment of two shafts
- WIDELY USE:Suitable for model shaft connection,perfect accessories for RC model motor,etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Alloy Steel |
| Fastener Type | Flange |
| Thread Size | M 4 |
| Exterior Finish | steel |
| Color | 8mm |
| Metal Type | Aluminum, Alloy Steel, Copper |
| Finish Type | electroplated |
| Drive System | External Hex |
| Brand | Sydien |
| Thread Type | Unified |
| Inside Thread Size | M8 |
| Grade Rating | industrial |
| Thread Style | Metric |
| Thread Class | Class 2A |
| Item Diameter | 8 Millimeters |
| Compatible groove diameter | 3.18 Millimeters |
| Number of Pieces | 4 |
| UPC | 745679813604 |
| Manufacturer | Sydien |
| Item Weight | 3.84 ounces |
| Country of Origin | China |
| Finish | electroplated |
| Cutting Diameter | 8 Millimeters |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Alloy Steel
- **Fastener Type:** Flange
- **Thread Size:** M 4
- **Exterior Finish:** steel
- **Color:** 8mm

## Images

![4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench - Image 1](https://m.media-amazon.com/images/I/71kZ2Aoq2yL.jpg)
![4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench - Image 2](https://m.media-amazon.com/images/I/51MBvNoXdIL.jpg)
![4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench - Image 3](https://m.media-amazon.com/images/I/71N5thPMnKL.jpg)
![4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench - Image 4](https://m.media-amazon.com/images/I/71+VE8JQdqL.jpg)
![4Pcs 8mm Rigid Flange Shaft Coupling Motor Guide Shaft Coupler Connector with Set Screws & Wrench - Image 5](https://m.media-amazon.com/images/I/71t2FibahiL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What are the positions of the 4 holes on the base for the 4mm part? Are there drawings available anywhere?**
A: Dear customer, the inner diameter is 4mm; the outer diameter of the cylinder is 10mm, the height of the cylinder is 10mm, the overall height is 12mm, and the distance between the opposite sides of the base is 16mm. The fixing hole screw is M3, the diameter of the chassis is 22mm, and the height of the chassis is 2mm.

**Q: What is the diameter of the hole pattern (4 holes) for the 5mm model? In other words, the distance between the center of two holes that are opposite**
A: Hello, the diameter of the chassis hole of M5 is 16mm, and the mounting screw of the hole is M3, thank you.

**Q: Why is it so hard to include the dimension for the 4 mounting holes in the product description? I see all the other relevant measurements.**
A: Dear customer, the product has 4 holes, the size is described in the data, please refer to it.

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-27*