What are the references for Fingerboard bearings?

Fingerboard bearings have the reference 681XZZ

What are the dimensions of a Fingerboard bearing?

Fingerboard bearings have the following dimensions:
Inner diameter: 1.5 mm
Outer diameter: 4 mm
Width: 2 mm

What are the hole dimensions for Fingerboard trucks?

Fingerboard holes have a spacing from the center of the hole of 5.5 mm in width and 7.5 mm in length.
The diameter of the holes for the trucks should be between 1.5 and 1.7 mm, with 1.6 mm being the most commonly used.

What is the reference/dimension of Fingerboard nuts?

Fingerskate nuts are M1.6 nuts.

What is the standard thickness of a Fingerboard?

The thickness of a fingerskate is determined by the size of the veneer used. There are 2 standards: 0.5 mm or 0.6 mm thick.
A board made of 5 plies therefore has a standard thickness between 2.5 mm and 3 mm.
For a 7-ply board, 3 veneers of 0.3 mm are usually used, alternating with 4 veneers of 0.5 mm, giving a total thickness of 2.9 mm.