Yokomo YOKZCN4AFB 4mm Aluminium Flanged Nylon Lock Nut 4pcs Blue  [YOKZCN4AFB]

Compact 4mm aluminium flanged nylon lock nuts

This set includes four aluminium flanged lock nuts with a nylon locking insert, sized at 4mm and finished in blue, made for R/C scale use to resist loosening from vibration.

Use case: these compact lock nuts are ideal where a low-profile locking solution is required on threaded fasteners in R/C models, such as small suspension links, wheel hardware and other points exposed to repeated movement.

Fitting advice: start by hand-threading the nut onto the matching 4mm shaft or screw to confirm correct engagement, then tighten with the appropriate driver until the nylon insert grips; avoid excessive torque to prevent flange deformation or damaged threads.

Service tips: inspect the nylon insert after prolonged running and replace any nut showing wear or reduced locking action, and keep spare nuts to ensure uniform clamping across steering and suspension joints.