--- 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: "₹ 1241" currency: INR in_stock: true reviews_count: 13 category: "Daier" url: https://www.desertcart.in/products/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory store_origin: IN region: India --- # Precision M3 Threaded Fasteners 45# Alloy Steel Strength Complete Installation Kit Included 4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors **Brand:** daier **Price:** ₹ 1241 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate Your RC Builds with Precision Power! ## 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?** ₹ 1241 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/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 - • **All-in-One DIY Ready Kit:** Includes 4 flange couplings, 8 M3 screws, and a mini hex wrench for effortless installation. - • **Top-Rated Quality Assurance:** Rated #1 in rigid set screw couplings with 4.5-star reviews from 800+ enthusiasts. - • **Industrial-Grade Alloy Steel:** Crafted from premium 45# steel for unmatched durability and heat resistance. - • **Versatile RC Model Compatibility:** Ideal for RC airplanes, boats, and DIY motor shaft connections—engineered to elevate your build. - • **Precision Machined for Perfect Fit:** Flawless dimensions and chamfered guides ensure smooth assembly and stable shaft alignment. ## Overview This 4-piece 4mm flange coupling set is engineered from robust 45# alloy steel, offering superior strength and heat resistance over copper and aluminum alternatives. Designed for RC model motors, each coupling features precision machining with chamfered guides and M3 threaded fasteners for seamless installation and stable shaft alignment. The package includes all necessary screws and a mini hex wrench, making it a complete, top-rated accessory trusted by DIY enthusiasts and professionals alike. ## Description Parts for RC Airplane Boat ,DIY Model. Perfect accessories for RC Model motor, etc. Review: Perfect Machining and Great Design – Each Flange Was Flawless - Perfect Machining and Great Design – Each Flange Was Flawless The manufacturer can be rightfully proud of the superior craftsmanship of the workers and high Quality Control inspections. Each flange was perfect: dimensions correct, NO dangerous sharp burrs left over from machining, chamfered guides for axle hole, chamfered beveled guide to screw threads for easier screw starting, and smooth screwing perfectly shaped internal threads. It was really polite, or something, that the manufacturer included the tiny Allen Wrench for the M3 socket head grub screws. Review: Well made and true to advertised dimenions - Great little shaft collars with flanges. Dimensions were accurate and surface finish is good. They worked so well I got a second set. ## 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 | |---------------|-------| | ASIN | B08334VLZG | | Best Sellers Rank | #5,047 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Rigid Set Screw Couplings | | Brand | daier | | Color | Silver | | Compatible Groove Diameter | 4 Millimeters | | Customer Reviews | 4.5 4.5 out of 5 stars (838) | | Drive Style | External Hex | | Exterior Finish | Aluminum | | Fastener Type | Flange, Hex | | Grade Rating | Industrial | | Inside Thread Size | M3 | | Item Diameter | 4 Millimeters | | Item Dimensions | 1.97 x 0.59 x 1.57 inches | | Item Weight | 30 Grams | | Manufacturer | daier | | Material Type | Metal | | Maximum Shear Strength | [INFERRED: Higher than aluminum or copper alloys] | | Metal Type | Alloy Steel | | Model | H416*4 | | Number of Pieces | 4 | | Part Number | H416*4 | | Screw Head Style | Flat | | Size Name | 4mm | | Thread Class | M3 | | Thread Coverage | M3 | | Thread Size | m3 | | Thread Style | Right Hand | | Thread Type | Iso Metric | ## Product Details - **Color:** Silver - **Exterior Finish:** Aluminum - **Fastener Type:** Flange, Hex - **Material:** Metal - **Thread Size:** m3 ## 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) ![4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors - Image 2](https://m.media-amazon.com/images/I/61TNTUjsl0L.jpg) ![4Pcs 4mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors - Image 3](https://m.media-amazon.com/images/I/61GCOE0xZ8L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect Machining and Great Design – Each Flange Was Flawless *by R***R on February 10, 2026* Perfect Machining and Great Design – Each Flange Was Flawless The manufacturer can be rightfully proud of the superior craftsmanship of the workers and high Quality Control inspections. Each flange was perfect: dimensions correct, NO dangerous sharp burrs left over from machining, chamfered guides for axle hole, chamfered beveled guide to screw threads for easier screw starting, and smooth screwing perfectly shaped internal threads. It was really polite, or something, that the manufacturer included the tiny Allen Wrench for the M3 socket head grub screws. ### ⭐⭐⭐⭐⭐ Well made and true to advertised dimenions *by D***. on September 30, 2025* Great little shaft collars with flanges. Dimensions were accurate and surface finish is good. They worked so well I got a second set. ### ⭐⭐⭐⭐⭐ 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 glue Bonus It comes with an allen wrench of the right size for the tiny set screws supplied ## 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) --- ## 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.in/products/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory](https://www.desertcart.in/products/186319476-4pcs-4mm-flange-coupling-connector-rigid-guide-model-coupler-accessory) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-04-23*