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Material Selection
Aerospace nuts are made from certified high-performance materials such as:-
A286 stainless steel
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Inconel
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Titanium alloys
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Aluminum alloys (7075, 2024)
These materials are selected for strength, corrosion resistance, and performance in extreme environments.
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Blanking / Cutting
Raw material is cut or blanked into precise dimensions, ready for forging or machining. -
Cold or Hot Forging / CNC Machining
Depending on size and design:-
Forjamento frio is used for high-volume production of smaller nuts.
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Usinagem CNC is used for complex, tight-tolerance aerospace components.
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Hot forging may be used for harder materials like Inconel.
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Threading
Internal threads are precisely formed using tapping or thread rolling to meet aerospace thread standards (UNJF, MJ, etc.). -
Heat Treatment
Aerospace nuts undergo heat treatment to improve strength, fatigue resistance, and dimensional stability. -
Surface Treatment
Specialized surface finishes are applied to prevent corrosion and meet aerospace specifications:-
Cadmium plating
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Passivation (for stainless steel)
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Anodizando (for aluminum)
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Dry film lubricant coatings
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Zinc-nickel or phosphate coatings
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Non-Destructive Testing (NDT)
Includes dye penetrant testing, magnetic particle inspection, or eddy current testing to detect surface or sub-surface flaws. -
Precision Inspection & Certification
All nuts are inspected using CMMs, thread gauges, and torque testing to meet aerospace tolerances. Certification includes:-
Material certificates
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First Article Inspection Report (FAIR)
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Lot traceability and compliance documents
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Cleanroom Packaging
Final products are cleaned, packed in controlled environments, and labeled with full traceability according to aerospace quality standards (e.g., AS9100, ISO 9001).
