MX5 Lock Nut 10 mm, Yellow, Fine Thread

Mazda MX-5 10mm lock nut, yellow, with fine thread.
Mazda uses this lock nut on various components, such as the starter motor, power steering pump, and many other parts. This lock nut is specially designed for moving parts, as it does not require a washer or spring.

This part fits:

Mazda MX-5 Types NA, NB, NB/FL, and NC (1989–2008)