Flag-style quick-disconnect for tight wire routing
The 2-520336-2 is the red, fully insulated female flag receptacle in TE's Ultra-Fast quick-disconnect line, accepting 18-22 AWG wire with a 0.187" (4.75mm) tab width and 0.032" (0.81mm) tab thickness. The right-angle flag orientation keeps the wire parallel to the tab plane, saving clearance in tight enclosures where a straight barrel won't fit.
Tab width and gauge — what fits where
The 2-520336-2's 0.187" tab width and 18-22 AWG range differ from the wider 0.248" (6.30mm) Utilux 1-1659250-0 (17-20 AWG) and the 0.312" (7.92mm) Fastin-Faston PIDG 1377175-8 (14-16 AWG) — each mates with its own tab size, so the tab on the mating part determines the receptacle, not the wire gauge alone.