NAS 5000 THRU 5006

Bolt, Pan Head, Close Tolerance, Short Thread, Tri-Slot Recess, Alloy Steel, Self-Locking and Nonlocking
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 03/29/1996

NAS 1612

Packing, Ethylene Propylene Preformed, Straight Thread Tube Fitting Boss, Phosphate Ester Resistant -65F To 250/300F
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 05/20/2002