The ornamental design for a bolt, as shown and described.
FIG. 1 is a perspective view of the bolt;
FIG. 2 is a side view of the bolt;
FIG. 3 is a side view of the bolt;
FIG. 4 is a side view of the bolt;
FIG. 5 is a side view of the bolt;
FIG. 6 is a top view of the bolt; and,
FIG. 7 is a bottom view of the bolt.
The bolt is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.
Fastener system comprising an externally threaded bolt and an internally threaded nut for the avoidance of cross-threading of the mating threads during assembly