This ARP 12-point nut is machined from chromoly steel and finished in black oxide for corrosion resistance. It has a 5/16-18 in thread and a 3/8 in 12-point head, sold as a pair.
Specifications:
- Thread Size: 5/16-18 in
- Head Style: 12-Point
- Head Size: 3/8 in
- Material: Chromoly
- Finish: Black Oxide
- Quantity: Pair (2)
FAQ
What thread size does this ARP nut use?
It uses a 5/16-18 in thread.
What material is the nut made from?
It is machined from chromoly steel with a black oxide finish.
What size is the 12-point head?
The head measures 3/8 in across the 12-point flats.
How many nuts are included?
This kit includes a pair (2 nuts), part #301-8323.

