The Deck Axle is a custom piece of hardware by Tilt. The customer washer under the head of the bolt allows more torque to keep your setup dialed, and the custom length makes sure your deck and wheel are riding on the sold part of the axle, not the threaded.
Weight (M8 x 54.0mm Length): 1.0oz incl hardware
Deck (M8 x 54.0mm Length): Theory, Theory 002, Ten Year, Theory 3, Stage I, Formula
One axle, one washer, and one nut