---
product_id: 505782342
title: "4Pcs 3.17mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors"
brand: "daier"
price: "53.87 DT"
currency: TND
in_stock: true
reviews_count: 8
url: https://www.desertcart.tn/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler
store_origin: TN
region: Tunisia
---

# M3 fastening screws included 45# steel for ultimate durability Precision 3.17mm inner diameter fit 4Pcs 3.17mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors

**Brand:** daier
**Price:** 53.87 DT
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate Your RC Game with Rock-Solid Precision!

## Quick Answers

- **What is this?** 4Pcs 3.17mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors by daier
- **How much does it cost?** 53.87 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler)

## 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 instantly.
- • **Versatile Compatibility:** Perfect for RC airplanes, boats, and custom motor projects—join the elite DIY model builders.
- • **Engineered for Endurance:** Crafted from premium 45# steel with heat and electroplated treatment for unmatched strength and insulation.
- • **Precision Fit, Zero Hassle:** Exact 3.17mm inner diameter ensures seamless shaft alignment and smooth motor performance.
- • **Effortless Installation & Replacement:** Flat head design and included tools make setup quick, stable, and maintenance-friendly.

## Overview

This 4-piece set of 3.17mm flange coupling connectors is crafted from durable 45# steel with heat and electroplated finishing, ensuring superior strength and insulation. Designed for RC model motors, it includes M3 fastening screws and a mini hex wrench for easy installation. Ideal for DIY enthusiasts seeking reliable, precision shaft axis fittings that enhance stability and performance in their RC airplanes, boats, and other motorized models.

## Description

Full description not available

## 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: 3.17mm,Height:12mm,Fixed Hole Screw: M3.
- Package included:4Pcs 3.17mm 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 | M 3 |
| Exterior Finish | Aluminum,Copper,Steel |
| Color | Silver |
| Metal Type | Alloy Steel, Aluminum, Copper |
| Brand | daier |
| Thread Type | Iso Metric |
| Inside Thread Size | M3 |
| Thread Style | Right Hand |
| Thread Class | Coarse |
| Size | 3.17mm |
| Item Diameter | 3.17 Millimeters |
| Number of Pieces | 13 |
| Manufacturer | daier |
| Part Number | H666*4 |
| Item Weight | 0.81 ounces |
| Item model number | H666*4 |
| Shape | Cylindrical |
| Head Style | Flat |
| Cutting Diameter | 3.17 Millimeters |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Metal
- **Fastener Type:** Flange, Hex
- **Thread Size:** M 3
- **Exterior Finish:** Aluminum,Copper,Steel
- **Color:** Silver

## Images

![4Pcs 3.17mm 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/61OW+F91nxL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Excellent
*by J***W on October 3, 2024*

Great quality and fit. Extra screws included.

### ⭐⭐⭐⭐⭐ Quality item.  Weldable.
*by C***G on November 15, 2024*

NIce quality. I actually welded one of these couplers to a fender washer to make a replacement dryer knob that was no longer available.

## Frequently Bought Together

- 4Pcs 3.17mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors
- Bringsmart 370 Mounting Bracket with Screw Worm Gear Motor Fixed Fastener DIY Parts DC Motor Holder (Single-Side Bracket)
- Zeberoxyz 2PCS Set GT2 Synchronous Wheel 20&60 Teeth 5mm Bore Aluminum Timing Pulleys with 2PCS Length 200mm Width 6mm Belt (20-60T-5B-6)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler](https://www.desertcart.tn/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-02*