Brass Hex Motor Drive Shaft Joint Transmission Coupling Coupler Connector for RC

Product Description

Size (Inner Diameter): 2mm / 3mm / 3.17mm / 4mm / 5mm / 6mm / 7mm / 8mm
Color: Gold / Silver
Type: Metal hexagonal coupling.
Material: Brass/45 gauge steel.
Coupling in brass: 2mm hexagonal spanner required
Coupling made of 45 gauge steel: 1.5mm hexagonal spanner required


[Brass material parameters]:
     The total height of the coupling is 18mm, the cylindrical height is 12mm, the outer diameter of the cylindrical part is 11mm, and the inner bore diameter of the cylindrical part is 2, 3, 4, 5, 6, 7 and 8mm, which are suitable for connecting six diameters of shafts of 2, 3, 4, 5, 6, 7 and 8 respectively.
  Due to the different models side fastening with screws M3 and M4 two models, hexagonal surface of the central hole of the fixing screw is M4 screws. (Matching screws are included).

[45 steel quality parameters]:
   The hexagonal side length is 7mm, the diagonal distance is about 13.6mm, the opposite side to opposite side is 12, the total height of the coupling is 17mm, the cylindrical height is 12.5mm, the outer diameter of the cylindrical part is 12.7mm, the inner bore diameter of the cylindrical part is 5mm and 6mm, which are suitable for 5 and 6mm diameter shafts respectively 

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●About the product colour:Because of the different light and environment when the product is photographed, In a few instances the colour of the product may have a little colour difference with the actual colour of the product, I hope you can understand.
 

On Nov 14, 2025 at 11:40:59 PST, seller added the following information:

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