Suit GQ & GU TD42 engines.
This is the Power Steering Adjuster Bolt located on the power steering pump.
This bolt is adjusted to set the tension you want on the power steering belt.
Because they are a small bolt, these are commonly snapped from over tightening.
This listing is just for the long adjusting bolt, not the locking bolt.
This is a Genuine Nissan Bolt, not an aftermarket item.