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Reference · engineering / procurement
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Aerospace hardware is grouped under five primary standards bodies: MS (Military Standard), NAS (National Aerospace Standard), AS (SAE Aerospace Standard), BAC (Boeing), and AN (legacy Air Force / Navy). PartsPerk routes RFQs against any standard with paperwork lined up before purchase.
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US Department of Defense
Military Standard family covering bolts, screws, nuts, washers, fittings, and connectors. MS standards are the backbone of common aerospace fastener hardware.
Aerospace Industries Association
National Aerospace Standard family used for high-strength fasteners, washers, and structural hardware where MS coverage is insufficient.
SAE International
SAE Aerospace Standard family covering hardware, fittings, electrical components, and process specifications across the aerospace supply chain.
The Boeing Company
Boeing-specific standard family covering structural fasteners, brackets, and hardware used across Boeing-designed airframes.
US Department of Defense (legacy AN series)
Legacy Air Force / Navy aeronautical standard family used for general-purpose fasteners, fittings, and hardware in older airframes.