The Bolt-Down Thermocouple contains #20 gauge (0.032”) solid conductors with fiberglass insulation over each leg and fiberglass insulation overall. The fiberglass insulation has a maximum service temperature of 900 degrees Fahrenheit. The ‘Bolt-Down’ thermocouple is ideal for bolting it to a wall. Four standard sizes are available (#6, #8, #10, and #1/4” eyelets). In addition to bolting the thermocouple to a wall, it can also be hooked to a traveling conveyor or hung from a ceiling or hook.