---
product_id: 186319476
title: "4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors"
brand: "daier"
price: "€ 13.10"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory
store_origin: DE
region: Germany
---

# M3 fastening screws included 45# steel for max durability Precision 4mm inner diameter fit 4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors

**Brand:** daier
**Price:** € 13.10
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your RC game with steel-strong precision coupling!

## Quick Answers

- **What is this?** 4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors by daier
- **How much does it cost?** € 13.10 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/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory)

## Best For

- daier enthusiasts

## Why This Product

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

## Key Features

- • **Complete DIY Ready Kit:** Includes 4 flange couplings, 8 M3 screws, and a mini hex wrench—everything you need to upgrade your RC model instantly.
- • **Versatile Compatibility:** Ideal for RC airplanes, boats, and other DIY motorized models—join the elite builders who demand reliability and precision.
- • **Unmatched Strength & Stability:** Crafted from premium 45# steel, outperforming copper and aluminum alloys for rugged, long-lasting use.
- • **Precision Fit for Smooth Performance:** 4mm inner diameter and 12mm height ensure perfect shaft alignment and minimal vibration for flawless motor operation.
- • **Effortless Installation & Replacement:** Heat and electroplated finish provide insulation and corrosion resistance, making setup quick and maintenance hassle-free.

## Overview

This 4-piece set of 4mm flange coupling connectors is engineered from durable 45# alloy steel with a heat and electroplated finish, ensuring superior strength and corrosion resistance. Designed for RC model motors, each coupling features a precise 4mm inner diameter and comes with M3 fastening screws plus a mini hex wrench for seamless installation. Perfect for professional DIY enthusiasts seeking reliable, high-performance shaft axis fittings.

## Description

Parts for RC Airplane Boat ,DIY Model. Perfect accessories for RC Model motor, etc.

## Features

- Durable Material: The coupling connector is made of 45# steel( it is better than copper and aluminum alloys ), heat and electroplated process make it sturdiness and insulation, striking shaft more stable and easy for installment and replacement.
- Widely use: used in model shaft connection, perfect accessories for RC Model motor.
- Size:Inner Diameter: 4mm,Height:12mm,Fixed Hole Screw: M3.
- Package included:4Pcs 4mm Flange Shaft Coupling + 1Pcs M3 Mini Hex Wrench + 8 x M3 Fastening Screw

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Metal |
| Fastener Type | Flange, Hex |
| Thread Size | m3 |
| Exterior Finish | Aluminum |
| Color | Silver |
| Metal Type | Alloy Steel |
| Brand | daier |
| Item Weight | 30 Grams |
| Thread Type | Iso Metric |
| Inside Thread Size | M3 |
| Thread Style | Right Hand |
| Thread Coverage | M3 |
| Thread Class | M3 |
| Size | 4mm |
| Item Diameter | 4 Millimeters |
| Maximum Shear Strength | [INFERRED: Higher than aluminum or copper alloys] |
| Number of Pieces | 4 |
| Manufacturer | daier |
| Part Number | H416*4 |
| Item Weight | 1.06 ounces |
| Item model number | H416*4 |
| Head Style | Flat |
| Cutting Diameter | 4 Millimeters |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Metal
- **Fastener Type:** Flange, Hex
- **Thread Size:** m3
- **Exterior Finish:** Aluminum
- **Color:** Silver

## Images

![4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors - Image 1](https://m.media-amazon.com/images/I/61PprJJW0AL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Inexpensive Metal flanges seem well made and come with screws and allen wrench
*by T***H on May 9, 2025*

I needed a flange for mounting a plastic fan unit that came with a flimsy flange molded in, that had failed.I dremelled out the old flange and added one of these metal flanges attaching it with screws and glueBonus It comes with an allen wrench of the right size for the tiny set screws supplied

### ⭐⭐⭐⭐⭐ Lure turner
*by M***E on May 19, 2025*

Used these to make a couple of lure turners. Worked very well. Solid and seem durable. Great value

### ⭐⭐⭐⭐⭐ Good value !  Worked great on my project.
*by R***R on May 7, 2025*

These are excellent couplers . They are well balanced , centered and stout.

## Frequently Bought Together

- 4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors
- DC 12V Reversible High Reduction Electric Motor 15-200RPM Outer Diameter 20MM(200RPM)

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**Shop now:** [https://www.desertcart.de/products/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory](https://www.desertcart.de/products/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-21*