Tungsten Carbide Eyelet Coil Winding Nozzle Guide Tungsten Carbide Eyelet is made by the precision machining with the tungsten carbide materials (super hard alloy). The hardness reached over HRA90 degree while the anti-bending degree reached over 2300N/mm. We do the precision grinding and surface treatment to achieve Ra0.1 of the bore roughness and the Ra0.025 of the R place of both ends. There is a scientific curvature radius design in the both entrance. This design can ensure a smooth transit of the thread. Due to the overall materials processing, and no elevation in the bore.
