Chevrolet Nomad high beam and low beam headlight bulbs utilize H5001, H6024, H5006, and H6024 sizes depending on configuration and model year. The replacement chart covers 1955 through 1961 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chevrolet Nomad uses three sealed beam unit types across its headlight specifications: H5001, H5006, and H6024. All three conform to ANSI standards recognized in both the United States and Canada, and all operate at 12 volts.
Sealed beam units integrate the filament, reflector, and lens into a single glass housing. None of the three types listed accept a replaceable bulb; the entire unit is substituted when replacement is needed.
The H6024 is a 7-inch round sealed beam unit. On the Chevrolet Nomad, it serves as both the high beam and low beam headlight for the 1955-1957 model years, meaning a single unit type covers both functions on those vehicles.
From 1958-1961, the Nomad adopted a dual-headlight arrangement using two distinct sealed beam types. The H5001, a 4-inch square unit, handles the high beam function, while the H5006, a 5.75-inch round unit, handles the low beam function.
The shift from a single H6024 unit to separate H5001 and H5006 units reflects the transition from a single-headlight system to a four-headlight system, which became federally permitted in the United States in 1957 and was widely adopted by manufacturers for the 1958 model year.
The H5001 and H5006 are not interchangeable with each other despite both appearing in the 1958-1961 configuration. They differ in shape and size, with the H5001 being square and the H5006 being round, and each is assigned to a specific beam function.
The H6024 used in 1955-1957 is also not interchangeable with either the H5001 or H5006 from the later years, as it is a larger 7-inch round unit designed for a single-headlight housing rather than a dual-headlight assembly.