Bushing for producing glass fibers and method for producing glass fibers

A bushing for producing glass fibers, comprising:

• a plurality of nozzles made of platinum or a platinum alloy from which molten glass is discharged;
• and a base plate made of platinum or a platinum alloy, the plurality of nozzles being joined to the base plate,
• wherein a coating layer is formed in a belt shape on an outer circumferential face of a tip part on a side of glass discharge on each of the plurality of nozzles, and a width of the coating layer on each nozzle is 5% or more and 95% or less with respect to an entire length of each nozzle, the base plate includes, at least in a part thereof, a non-coating area not provided with the coating layer, and
• wherein a total coverage P of all the nozzle tip parts represented by the following equation is 5% or more and 350% or less:
• P(%)=C/(NC1+NC2)×100 [Expression 1]
• wherein C is a total surface area of the coating layer on the nozzle tip parts of all the nozzles, NC1 is a total surface area of areas not provided with the coating layer on all the nozzles, and NC2 is a surface area of the non-coating area on the base plate.