Extraordinary Bolt

The Extraordinary Bolt is a large, but plain bolt featured in Pikmin as a ship part. It has a red plating on the bottom of it. It is described by Olimar as being "Extraordinary!" When collected, it does not change the ship's appearance. Despite being so "extraordinary", 6 of them must be collected across the four areas in Olimar's Shipwreck Tale, replacing several of the original ship parts from Pikmin in the mode.

In Pikmin
It is found behind a black reinforced wall past the original place of the Yellow Onion and the Whimsical Radar, an ideal place to test the usage of Yellow Pikmin with bomb-rocks. It takes 9 bombs to destroy this gate, and it should be noted that a path to the ship should be secured first, especially considering the nearby Sheargrubs and Spotty Bulborbs, if they haven't already been killed. If you are planning to kill them, however, you should kill them using Captain Olimar. It is generally safer because you can avoid Pikmin losses.

Sun-Speckled Terrace
The Extraordinary Bolt is on a raised platform at the area's northern edge, straight north of the Rugged Scaffold landing site. Kill the Watery Blowhog and the two Dwarf Bulborbs near the platform, then throw 5 Pikmin onto a nearby climbing stick. They will automatically climb the stick and carry the part.

Blossoming Arcadia
Take out at least one Red Pikmin. Kill the Waddlequaff near the Sunwashed Plateau landing site, then proceed on the path west of the titular plateau. Go through some bars to the right and throw a Red Pikmin onto the bonfire altar. Use this fire starter to burn the dried plants on the way to the top of the hill, where you will find a buried Extraordinary Bolt.

Hero's Hideaway
Dig a tunnel to the kitchen countertop in the western part of the area. From there, go left where you will need to build a clay mound. Beyond the mound, the part lies in plain sight. A Hydro Dweevil will drop from the ceiling, so dispatch it before you let Pikmin carry the part.

Trivia

 * The Extraordinary Bolt can be seen in the enemy reel while showing the Iridescent Flint Beetle. However, it is in The Distant Spring, and the top is green instead of red. It can also be seen while showing the Spotty Bulborb and the Sheargrub.
 * The Extraordinary Bolt bears some resemblance to the Superstrong Stabilizer from, since they're both short and wide screws.
 * In Pikmin 2, the Hole of Beasts replaces this part's location.