English to Spanish Tech/Engineering Mechanics / Mech Engineering

Hola a todos, estoy con una traducción técnica de un Conjunto básico de dispositivo de soporte para motor y estoy un poco perdida con este término:
spring cotter. La definición de encontre en Merrian- webster es esta:
spring cotter
a cotter formed of elastic metal bent double and used as a split pin — called also spring key

Puede ser: pasador elástico, pasador con muelle

Más contexto:
Tighten the screw connections with the prescribed torque (see workshop manuals of the Volkswagen Group brands).
Only use the original locking pins and secure them with the spring cotter.
Check the spring cotters for functionality.
Only use hexagon flange screws M10x30, 10.9 for fastening the adapters T40091/4 and T40091/5 to the vehicle.

gracias