Which head marking identifies a magnetically inspected bolt?

Prepare for the Aviation Institute of Maintenance Block 2 Exam. Study with interactive questions and detailed explanations, honing your skills for a successful outcome!

Multiple Choice

Which head marking identifies a magnetically inspected bolt?

Explanation:
Head markings show what processing or testing a fastener has undergone. Magnetic particle inspection (MPI) is a nondestructive test used on ferrous bolts to reveal surface and near-surface defects. When a bolt has been MPI inspected and passes, a specific marking is placed on the bolt head to indicate MPI has been performed. This marking helps maintenance personnel quickly identify that this fastener has undergone MPI and meets the inspection criteria. Other bolt types are identified by markings for material or grade, not for MPI status, so they don’t indicate that MPI was performed.

Head markings show what processing or testing a fastener has undergone. Magnetic particle inspection (MPI) is a nondestructive test used on ferrous bolts to reveal surface and near-surface defects. When a bolt has been MPI inspected and passes, a specific marking is placed on the bolt head to indicate MPI has been performed. This marking helps maintenance personnel quickly identify that this fastener has undergone MPI and meets the inspection criteria. Other bolt types are identified by markings for material or grade, not for MPI status, so they don’t indicate that MPI was performed.

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