To provide a screw fitting capable of improving fitting workability of a wiring tool with respect to a wiring tool mount by improving insertability of a screw to the screw fitting, and to provide the wiring tool mount.

The screw fitting 40 is housed in a fitting part 20 of a wiring box 11. In the screw fitting 40, an insertion hole 43 into which a shaft part of the screw is inserted, and a pair of locking claws 42 locked to the shaft part inserted into the insertion hole 43 for regulating the coming-off in the anti-insertion direction with respect to the insertion hole 43 of the screw, are provided opposite to each other on an elastically deformable substrate 41 formed into a plate shape. The screw fitting 40 includes a connecting plate 41a in which base ends of the locking claws 42 are mutually connected to only one side end of the substrate 41 extending along the extending direction from the substrate 41 of the pair of locking claws 42, and the other side end of the locking claws 42 extending along the extending direction is a free end.