You don't find them, you make them or do a quest. To make them you'll need:
One Bronze plate (Made from 10 bronze ores)
One Steel Plate (Made from 10 Steel ores) Then go to any item maker (There's one in Henesys, Ellinia, Perion and Kerning City) and they'll make 15 screws for you. Or do this quest, John and Pink Flower Basket, and you'll get screws from him at the end of the quest. You don't find them, you make them or do a quest. To make them you'll need:
One Bronze plate (Made from 10 bronze ores)
One Steel Plate (Made from 10 Steel ores) Then go to any item maker (There's one in Henesys, Ellinia, Perion and Kerning City) and they'll make 15 screws for you. Or do this quest, John and Pink Flower Basket, and you'll get screws from him at the end of the quest.
At Ludi
pretty much anywere in maplestory near hennnesys..... many places
my bum :)
In Sleepywood dungeon
At Ludibrum
internet
You can get them from Mushmom and Mushmom's Grave.
You can't.
Henesys
you can find octopus by kerning city. they are in the construction site
Near perion
in the woods and the dark lair