--- 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: "£8.93" currency: GBP in_stock: true category: "Daier" url: https://www.desertcart.co.uk/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler store_origin: GB region: United Kingdom --- # Precise 3.17mm inner diameter M3 fastening screws for secure fit 45# steel for ultimate durability 4Pcs 3.17mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors **Brand:** daier **Price:** £8.93 **Availability:** ✅ In Stock ## Summary > ⚙️ Lock in precision, power your passion. ## 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?** £8.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/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 Kit:** Includes 4 flange couplings, 8 M3 screws, and a mini hex wrench—everything you need to upgrade your RC model effortlessly. - • **Unmatched Durability:** Crafted from premium 45# steel with heat and electroplated finish for long-lasting strength and corrosion resistance. - • **Effortless Installation:** Rigid guide design and included tools make assembly and replacement quick and hassle-free. - • **Versatile Compatibility:** Perfectly fits RC airplane, boat, and motor shafts, making it the go-to accessory for serious hobbyists. - • **Engineered for Precision:** Exact 3.17mm inner diameter ensures flawless shaft alignment every time. ## Overview This 4-piece flange coupling connector set features a precise 3.17mm inner diameter and is made from industrial-grade 45# steel with a heat and electroplated finish for superior durability and corrosion resistance. Designed for RC model motors, it includes M3 fastening screws and a mini hex wrench for easy installation, making it an essential upgrade for DIY enthusiasts seeking reliable and stable shaft connections. ## 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: 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 | |---------------|-------| | ASIN | B08333PNZQ | | Best Sellers Rank | #8,412 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Rigid Set Screw Couplings | | Brand | daier | | Color | Silver | | Compatible Groove Diameter | 3.17 Millimeters | | Customer Reviews | 4.5 4.5 out of 5 stars (883) | | Drive Style | External Hex | | Exterior Finish | Aluminum,Copper,Steel | | Fastener Type | Flange, Hex | | Finish Types | Brushed | | Grade Rating | industrial | | Inside Thread Size | M3 | | Item Diameter | 3.17 Millimeters | | Manufacturer | daier | | Material Type | Metal | | Metal Type | Alloy Steel, Aluminum, Copper | | Model | H666*4 | | Number Of Items | 4 | | Number of Pieces | 13 | | Part Number | H666*4 | | Screw Head Style | Flat | | Set Name | 4-Piece Flange Coupling Connector Set | | Size Name | 3.17mm | | Thread Class | Coarse | | Thread Size | M 3 | | Thread Style | Right Hand | | Thread Type | Iso Metric | | Unit Count | 4.0 Count | ## Product Details - **Color:** Silver - **Exterior Finish:** Aluminum,Copper,Steel - **Fastener Type:** Flange, Hex - **Material:** Metal - **Thread Size:** M 3 ## 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. ## 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.co.uk/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler](https://www.desertcart.co.uk/products/505782342-4pcs-3-17mm-flange-coupling-connector-rigid-guide-model-coupler) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-15*