The EST-250/300-X is a 1-wire-to-ground temperature sender for use with electric temperature gages. This model has a 5/8-18 UNF thread size.

The EST-250/300-X is a 1-wire-to-ground temperature sender for use with electric temperature gages. This model has a 300°F maximum temperature rating and a 5/8-18 UNF thread size. Threads are straight to allow use with an adapter nut.