Fig. 244 shows the usual shapes of rivets for ship, bridge, boiler and tank work. They are designated as follows:

394 Shapes Of Rivets 310394 Shapes Of Rivets 311394 Shapes Of Rivets 312Fig. 244.   Types of Rivel Heads.

Fig. 244. - Types of Rivel Heads.

(1) Pan head.

(2) Button or round head.

(3) Countersunk.

(4) Cone or boiler head.

Rivet lengths do not include the head, except in the case of the countersunk rivet.