It's the Macadamia Nut
A macadamia nut.
The nut with the hardest shell is the macadamia nut. It is difficult to crack because the edible part is stuck to the inside of the shell.
The answer is a Nutcracker
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
There is. The starter's on the right-hand side of the car. Look between the firewall and the fan shroud on that side, and you'll see a 17mm nut. That's the top nut holding the starter in, and you might need to clamp a pair of vise-grips to the head of the bolt to get the nut off. It is in possibly THE hardest place in the world to maneuver a pair of vise-grips into.
diamonds are the hardest
Diamonds are the hardest mineral and the agate is the secod hardest mineral.
The name of the hardest solid is a diamond; it is the hardest object known to humankind.
From what I hear, One is the hardest & Master of Puppets is second hardest.
The third hardest gemstone is ruby and then the fourth hardest is emerald.
A punch nut is not a locking nut
yes.