The ornamental design for a protrusion for connector, as shown.
FIG. 1 is a top, front and left side perspective view of a first embodiment of a protrusion for connector showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a top, front and left side perspective view of a second embodiment of a protrusion for connector showing our new design;
FIG. 9 is a front elevation view thereof;
FIG. 10 is a rear elevation view thereof;
FIG. 11 is a top plan view thereof; and,
FIG. 12 is a bottom plan view thereof.
The left and right side elevation views of the second embodiment are the same as that of the first embodiment shown in FIGS. 4 and 5. The broken line shown in the figure drawings is included for the purpose of illustrating environment and forms no part of the claimed design.