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NAS NAS1758   2018   NUT, SELF-LOCKING, EXTENDED WASHER, DOUBLE HEXAGON, 220 KSI, 450 °F - Rev 3 50 $
NAS NAS1758   2012   NUT, SELF-LOCKING, EXTENDED WASHER, DOUBLE HEXAGON, 220 KSI, 450 °F - Rev 2 50 $