To provide a coil terminal part assembling structure of an electromagnet device which is improved so that terminal fittings pressed in and mounted to a groove of a terminal block can be surely fixed and held at a predetermined assembling position.

This coil terminal part of an electromagnet device is constituted so that a terminal block 10 is mounted to a coil winding frame 3 with an operation coil 2 wound around it, and terminal fittings 11 are mounted to the terminal block and connected to the operation coil. In the coil terminal part, the terminal fitting 11 has a structure where a screw seat 11a for screwing a terminal screw 12 thereto and a lead wire connection part 11b are formed at the front end and the rear end of a conductor piece, respectively; and the conductor piece is pressed and fixed from the side in a slit-like fitting groove 10c formed on the side surface of the terminal block 10. In the coil terminal part, a come-off preventing engagement claw 11c is formed at the upper edge of the lead wire connection part 11b; the engagement claw is locked and fixed to an engagement groove 10f formed at the terminal block at a press-in mounting position of the terminal fitting, specifically, the engagement claw 11c is formed into a sawtooth-like triangular projection tapered on the press-in side, and the engagement groove 10f is formed by cutting a rectangular hole from the upper surface side of the terminal block.