messages: Please translate this passage, which is in english, into french	“At its end 3 remote from the screw-threaded part or from the blade proper, the part 2 of the insertable member 1 or 1' has a surface in the shape of a hollow semi-sphere, termed surface of contact 4.”
messages: user
messages: “A son extrémité 3 opposée à la partie filetée ou à la lame proprement dite, la partie 2 de la pièce insérable 1 ou 1' présente une surface en forme de demi-sphère creuse dite surface de contact 4.”
messages: assistant