The AGL safety screw comes as one piece, in a non-losable connection of pre-assembled safety washer and the pink screw. It can be used for shallow base installations. The system is comprised of a pair of washers that has cams on one side and radial teeth on the opposite side. Since the cam angle at the washer is greater than the thread pitch of the screw a wedge effect is created by the cams, achieving a high preload force which even gets higher before loosening, details see drawing and load schematic on page two.
“…it is highly recommended to use safety
washers and screws in a color not commonly
used in airports”.
Considering that and few more steps towards
Poka Yoke & Continuous Improvements practice
we developed this combined solution which can
make the difference to prevent having a major
incident which can cause life. The results of using
the washers are vetted in real live circumstances
with international recommended airports around