Stainless steel probe, case 20 pct glass filled; length 3.290; dia, lower part at end of probe, 0.187, lower part at top, 0.250, top part at top, 0.320; thd stud n0. 10-32 unc; hex nut 0.500 wide across flats; 1/8-27 nptf dryseal american national taper pipe thd