KS 2740:2017

Road vehicles-Lamps (bulbs)-Requirements.

Covers incandescent tungsten filament lamps of the following categories for use in motor vehicles and trailers: R2, H1, H2, H3, H4, P21W, P21/5W, R5W, R10W, C5W, C18W, C21W, T4W, W3W and W5W.