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Secure Your RC Motor Connection
The daier 4-piece 3.17mm flange coupling set offers a rigid, stable connection for RC model motors. Constructed from robust 45# steel, it provides superior durability and insulation compared to copper or aluminum alloys. This set is designed for easy installation and replacement, ensuring your RC airplane or boat projects run smoothly. All customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping within 12-14 days.
Each coupling features a 3.17mm inner diameter and a 12mm height, secured by M3 fastening screws. The heat and electroplated process enhances its sturdiness, making it a reliable accessory for DIY model building. This set is perfect for connecting motor shafts, ensuring a precise fit and secure operation for your hobby projects.
Compared to local alternatives, this USA-sourced coupling set offers verified material quality and precise manufacturing tolerances. While local options may vary in steel grade and finish, daier ensures consistent performance and durability. The included M3 mini hex wrench simplifies installation, making it a convenient choice for hobbyists in India.
Engineered for Precision RC Performance
This daier flange coupling set is built with 45# steel, offering enhanced rigidity and durability crucial for RC model motors. Unlike generic connectors, its heat and electroplated finish ensures stability and insulation, preventing slippage and motor damage. The precise 3.17mm bore and M3 screw system guarantee a secure fit, vital for smooth operation in high-speed applications. Imported directly from authorized US retailers, this set meets stringent quality standards for hobbyists demanding reliable components for their DIY projects.
Ideal for DIY RC Projects, Skip if...
Perfect for hobbyists building RC airplanes, boats, or DIY model motors requiring a rigid 3.17mm shaft connection. Skip this coupling if your project requires flexible shaft alignment or if you need a larger bore size, as rigid couplings do not accommodate misalignment and this model is specifically for 3.17mm shafts.
Typical situations where daier 4Pcs 3.17mm Flange Coupling Connector Set with M3 Hex Wrench | Rigid Shaft Coupler for RC Motors helps — illustrative scenarios, not customer reviews.
Building a custom RC boat for coastal waters.
This daier coupling set's 45# steel construction with electroplated finish resists corrosion. Its rigid connection ensures stable motor-propeller alignment, crucial for efficient propulsion in humid Indian environments. The included M3 hex wrench simplifies assembly, allowing for quick setup.
Upgrading a DIY CNC machine's motor shaft connection.
The precise 3.17mm bore and rigid connection of this daier coupling ensure minimal play, vital for accurate CNC movements. Its durable steel build withstands operational stress, providing a reliable link between the motor and driven component for hobbyist projects.
| Application | RC Model Motors, DIY Projects, Shaft Connection |
| Shaft Size Compatibility | 3.17mm |
| Fastener Type | M3 Set Screw |
| Included Accessories | 1x M3 Mini Hex Wrench, 8x M3 Fastening Screws |
| Cost per use | ₹348 per piece — 4 pieces in the pack |
| Feature | daier 4Pcs 3.17mm | Others |
|---|---|---|
| Material Quality | Durable 45# Steel with heat & electroplated finish | Varies by brand; often copper or aluminum alloys, may lack advanced finishing |
| Shaft Connection Type | Rigid, set-screw secured for 3.17mm shafts | Rigid, may use set screws or clamps; bore sizes vary |
| Included Accessories | 4 couplings, 1 M3 hex wrench, 8 M3 screws | Typically couplings only; wrench and screws may be separate purchases |
| Cost per piece | ₹348 per piece — 4 pieces in the pack | Local sets may range from ₹200-₹500 for a similar quantity, depending on material and brand |
| Precision & Durability | Engineered for RC models, enhanced sturdiness | General purpose; may lack specific RC application precision |
| SKU | kjb6386 |
| Brand | daier |
| Model Number | H666*4 |
| Part Number | H666*4 |
| Set Name | 4-Piece Flange Coupling Connector Set |
| Material | 45# Steel (superior to copper/aluminum alloys) |
| Exterior Finish | Heat Treated, Electroplated, Brushed |
| Color | Silver |
| Inner Diameter | 3.17mm |
| Height | 12mm |
| Fixed Hole Screw Size | M3 |
| Number of Pieces | 4 |
| Item Shape | Cylindrical |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
About daier
daier specializes in precision components for RC models and DIY projects, focusing on durable materials and reliable connections for hobbyist applications.
Compliance & Legal
No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.
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This item:
daier 4Pcs 3.17mm Flange Coupling Connector Set with M3 Hex Wrench | Rigid Shaft Coupler for RC Motors
1,390
This item
daier 4Pcs 3.17mm Flange Coupling Connector Set with M3 Hex Wrench | Rigid Shaft Coupler for RC Motors
1,390
Total price:
5,000
You save 3,510 (41%) Extra3 items selected
3 items
5,000You save 3,510 (41%) Extra
| Attributes | Current |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 1,390 2,790 | 1,850 2,780 | 1,760 2,940 | 1,390 2,790 | 830 970 | 3,520 5,420 | 1,720 2,750 |
| Rating | 4.50(912) | 4.63(8) | 4.50(910) | 4.50(911) | 4.13(8) | 4.50(1,036) | 4.70(294) |
| Brand Name | daier | daier | daier | daier | uxcell | Quartet | uxcell |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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