Preflight Pass

General · Lesson 6 of 40

Aircraft Materials, Hardware, and Processes

Metal properties and the forces on aircraft parts, steel and aluminum identification, heat treatment, AN, NAS and MS hardware, torque and preload, safety wiring, precision measurement, soldering, and how to recognize acceptable welds and make weld repairs.
12 min read

Last reviewed

Part of A&P Complete

This lesson is in the full course

  • Describe metal properties and the stresses that act on aircraft parts
  • Identify steels, aluminum alloys and tempers, and choose compatible materials and hardware
  • Explain hardening, tempering, annealing, normalizing, case hardening and aluminum heat treatment
  • Decode AN, NAS and MS bolt, nut and rivet markings and part numbers
  • Apply correct torque, preload and safetying practices, and read a micrometer
  • Recognize acceptable and unacceptable welds and the rules for soldering and weld repair