We offer two styles of adjustable compression fittings for use in mounting thermocouples into think or thin walls. One style uses a standard NPT pipe thread while the other uses a straight thread with an O-ring seal. Both are typically in stock in 316 stainless steel. Brass units are avilable upon request. Both styles are available for probe diameters from 1/16 to one inch OD. Other sizes are available upon request. The O-ring style is also ideal for use in thin-wall applications, glass containers, jar lids, etc. By simply putting a jam nut on the other side of the container lid.