Bolt Crate

A bolt crate is a wooden crate often found in neat stacks along with other crates. see: Ammo Crate. They contain bolts. Some of them are found in neat stacks and piles with other crates out in the open, and some are hidden. (Note: If you see hidden bolt crates, they often lead to Raritanium Chests, or Gold Bolts).

Usage
See: Bolts

They are used to contain shipment of bolts. They are stacked neatly by regulators. (When Zephyr said after Ratchet destroyed some crates: "Hey you young whipper-snapper, I just stacked those things". 

Locations
"Noted before"

See: Bolts

They are genrally put out in the open in neat stacks and/or piles. But some of them are found hidden. (When you see a hidden bolt crate, it often leads to either a bunch of bolt crates, or a gold bolt or some rare object).

Heading
Bolt crates are made of wood. It is not said of what "type" of wood it is made of. Here are some fan-guesses, but these are not official:


 * 1) Mahogany


 * 1) Cherry


 * 1) Pine

And here are some very poor guesses


 * Ply Wood

Shift
The bolt crate design shifted from plain dark beige/tan, from a beige board, outlined with maroon.