ARP 5/16"-18 Nut

• 12 Point Nut
• Available in Stainless or Chromoly with Black Oxide Finish
• Socket Size: 3/8 12pt

More individual ARP bolts found HERE.

Check out this cool video about how ARP hardware is made.
https://youtu.be/hVYrbV2tz0g?si=3H0323ycUFU4BPyi