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The opaque parts of aerospace fastener selection, made plain. Each piece is cited and ties back to what the selector does.
Why composites need special fasteners — and when they don't
The blind-bulb mechanism, the bearing failure modes, and why the rule is more than 'is the blind side composite?'
Read →Galvanic corrosion: the material-pair trap
Carbon fiber + aluminum is a battery. Why fastener alloy is driven by the pair, not by which side is blind.
Read →Decoding AN, MS, NAS, NASM & OEM part numbers
What the prefixes mean, how a dash number encodes size, and when an OEM spec (BAC/ASNA) supersedes the rest.
Read →The sourcing reality: lead times, distributors & the 10% line item
Why a spec-compliant fastener can still be the wrong choice — and why fasteners can be ~10% of airframe cost.
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