Used on nsn 2320-01-318-9902 het (heavy equipment transporter). b single pressure connection thread class 9.000" overall length 20 single pressure connection thread quantity per inch kmanufacturers item name: normally open pressure switch assembly; high pressure 100 to 400 psi operating range; spst switch; type 070; contacts normally open; closes on pressure rise; 2 pin weatherpack connector cylindrical unf single pressure connection thread series