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Magnetic Particle Inspection for Fasteners

A concise guide to specifying magnetic particle inspection for suitable ferromagnetic fasteners.

2026-08-12 Quality Inspection
Magnetic Particle Inspection for Fasteners

Magnetic Particle Inspection for Ferromagnetic Fasteners

MPI can help identify surface and near-surface discontinuities in suitable ferromagnetic parts. It is one inspection method, not a substitute for material, dimensional and mechanical checks.

When to specify MPI

  • Define the part material, inspection area and acceptance criteria.
  • State the sampling plan or lot coverage in the purchase order.
  • Confirm the report format and reference standard before production.

For sourcing

Share drawings, grade, lot size, applicable standard and inspection requirements. The inspection scope should be agreed before order confirmation.

Related sourcing: review the fastener catalog and contact the hardware team with your specification.