NAS 1800

Recess, Six Lobe Drive-Internal – Dimensions for Recess and Gages
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 08/21/2001

NAS 1758

Nut, Self Locking, Extended Washer, Double Hexagon, 220 Ksi, 450 F
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 04/15/1994

NAS 1736

Nut Self-Locking, Blind Rivet, Elliptical Head Installation Data for
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 02/15/1983