This is the actual floor brake from the KR562 in the last 3 pictures. I made a bolt schematic to make sure your bolt holes line up.
Vintage Snap-on KR562 Aviation Box Original Genuine Small Corner Trims 2 Pieces
Vintage Snap-on KR562 Aviation Box Original Genuine Large Corner Trims 2 Pieces
Vintage Snap-on KR562 Aviation Box Floor Brake No Mounting Bolts
Snap-on 8-267 Friction Drawer Slide w/Slide Clips KR562 Aviation Cab 16'' Long
Snap-on KR562 Aviation Mechanic Roll Cab 24'' Wide Small Drawer Only
Snap-On KR562 Aviation Roll Cab Back Door Lock/Locking Mechanism 24.5'' L 1 Key