TechnicianVision · Knowledge base
Back-To-Basics: Torque-To-Yield Bolts
I-CAR · February 12, 2020
Summary
This article explains that torque-to-yield bolts are one-time-use fasteners designed to stretch during installation, which compromises their integrity and prevents them from being reused. These fasteners are commonly found in cab, pickup box, and suspension mounting locations, and must be replaced to ensure proper clamping strength and safety.
What to do on the job
Always replace torque-to-yield and one-time-use fasteners with new OEM bolts during reassembly, and never reuse them.
How to use it
Use this document to justify the replacement cost of one-time-use fasteners on estimates and supplements. When insurers question why new bolts are required for suspension, cab, or bed mounting, reference this I-CAR guideline alongside the OEM repair manual to prove that reusing these stretched fasteners compromises vehicle safety and structural integrity.
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