Threaded Thermowells – Tapered
Series C: Threaded Tapered Stem Thermowells

| Process Thread | Bore | Q | D | Ordering Code | ||
| Type | Material | “U” | ||||
| 1/2″ NPT | .260 | 11/16″ | 5/8″ | 1/2 C | Select Material Code from Here | Specify in Inches
——- Standard Lengths: 2 1/2″, 4 1/2″, 7 1/2″, 10 1/2″, 13 1/2″, 16 1/2″, 22 1/2″ |
| – | – | – | – | |||
| 3/4″ NPT | .260 | 7/8″ | 5/8″ | 1C | ||
| .385 | 7/8″ | 49/64″ | 2C | |||
| 1″ NPT | .260 | 1 1/16″ | 5/8″ | 3C | ||
| .385 | 1 1/16″ | 49/64″ | 4C | |||
How to Order
Example: 3C60-7 1/2
Process Thread = 1″ NPT
Bore = .260″
“Q” = 1 1/16″
“D” = 5/8″
Material = Inconel 600
“U” = 7 1/2″
Series D: Threaded Tapered Stem Lagging Thermowells

| Process Thread | Bore | Q | D | Ordering Code | |||||||||||||||
| Type | Material | “T” | “U” | ||||||||||||||||
| 1/2″ NPT | .260 | 11/16″ | 5/8″ | 1/2 D | Select Material Code from Here | Specify in Inches
Standard Lengths:
|
|||||||||||||
| – | – | – | – | ||||||||||||||||
| 3/4″ NPT | .260 | 7/8″ | 5/8″ | 1D | |||||||||||||||
| .385 | 7/8″ | 49/64″ | 2D | ||||||||||||||||
| 1″ NPT | .260 | 1 1/16″ | 5/8″ | 3D | |||||||||||||||
| .385 | 1 1/16″ | 49/64″ | 4D | ||||||||||||||||
How to Order
Example: 4D40-T2-2 1/2
Process Thread = 1″ NPT
Bore = .385″
“Q” = 1 1/16″
“D” = 49/64″
Material = 410 Stainless Steel
“T” = 2″
“U” = 2 1/2″
