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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.
| ASIN | B08334VLZG |
| Best Sellers Rank | #6,392 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 out of 5 stars 871 Reviews |
| Drive Style | External Hex |
| Exterior Finish | Aluminum |
| Fastener Type | Flange, Hex |
| Finish Types | Unfinished |
| 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 | Metal |
| Material Type | Metal |
| Maximum Shear Strength | [INFERRED: Higher than aluminum or copper alloys] |
| Metal Type | Alloy Steel |
| Model | H416*4 |
| Number Of Items | 4 |
| Number of Pieces | 4 |
| Part Number | H416*4 |
| Screw Head Style | Flat |
| Set Name | 4mm Flange Coupling Connector Set (4 Pieces + Tools) |
| Size Name | 4mm |
| Thread Class | M3 |
| Thread Coverage | M3 |
| Thread Size | m3 |
| Thread Style | Right Hand |
| Thread Type | Iso Metric |
R**R
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.
S**.
These fit small gear drives
Nice product
Z**A
Work great
Worked as advertised
R**N
great item.
Would have given five stars, but once installed they were off just a bit had to flatten on lathe to run true. Well worth buying if not needing perfect true. Would buy again. Also would be nice if added at least two extra set screws.
M**E
Perfect fit
Perfect for 1/8” rod when making whirligigs. Used to mount drive shaft to the blade
J**A
Great shipper
As described and fit perfectly on my
D**E
Great
Great
M**N
Fine as long as your assembly does not have any vibration. Otherwise, the set screws loosen easily
I've used these for a number of applications. They're fine as long as vibration isn't an issue. If there's even a little bit of vibration in your assembly the set screws quickly loosen and render the piece useless. I'd happily pay a bit more for a piece that doesn't have this problem, but I can't find a better version.
R**L
Good quality, fast shipping.
Nice quality, used to attach to output 14m shaft of worm gear reducers (after removing key) etc.
A**H
Exactly as expected.
Fits the three 8mm rods that I needed them for. Threaded screw fits properly and snugly. I had a bit of a laugh in that the resealable package ("ziploc" style) was heat-sealed shut BELOW the reseal, so after breaking the heat-seal (cutting it off) you couldn't reseal it anymore.
J**Y
Bien fait
Utile
M**.
MUY BUEN PRODUCTO, LO RECOMIENDO
Me gusto los tiempos y el producto es de excelente calidad.
L**Y
Good product.
Would have given 5 stars if the Allen set screws were a bit longer. Longer screws would work better with "D" shafts on motors.
Trustpilot
1 month ago
2 days ago