TechnicianVision · Knowledge base
One-Time-Use Parts And Fasteners: Mercedes-Benz
I-CAR · April 28, 2023 · Mercedes-Benz
Summary
This article outlines the Mercedes-Benz requirements for identifying and replacing one-time-use fasteners. It specifies that bolts and nuts with locking splines, self-locking nuts, and microencapsulated bolts and nuts must always be replaced after a single use.
What to do on the job
Always replace bolts and nuts with locking splines, self-locking nuts, and microencapsulated fasteners after they have been used once, and inspect the mating screws/bolts on self-locking connections for damage.
How to use it
Use this document to justify the replacement and billing of one-time-use fasteners on Mercedes-Benz vehicles. Refer to the vehicle-specific body repair manual under 'General Notes: Passenger Cars: Overall Vehicle > Notes On Self-locking Nuts And Bolts' to support the necessity of replacing these parts during structural or mechanical reassembly.
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