This is a 1/2-13 thin nylon insert lock nut from Allstar Performance, sold in a pack of 10. The nut is made of steel with a zinc oxide finish and uses a nylon insert to resist loosening from vibration. It has a low-profile (thin) hex head design and a coarse 1/2-13 thread.
FAQ
What thread size is this nut?
This nut has a 1/2-13 coarse thread.
How many nuts are included?
This pack includes 10 nuts.
What material is the nut made of?
The nut is made of steel with a zinc oxide finish.
How does the nylon insert prevent loosening?
The nylon insert grips the bolt threads to create friction that resists loosening from vibration.
Is this a low-profile nut?
Yes, this is a thin (low-profile) hex nut with a nylon insert.

