Stepped brass rivet used on thermostatically controlled radiator shutters. For use with all Packard Series from the 1920’s through the 1940’s using shutterstats. Also for use on other makes of the era.
Material: Brass
Head: .320
Medium DIA: .207 x .142 high
Small DIA: .160 x .120 high
OAL: .312
ID: .120