1/4" Automotive (Type T) vs 1/4" Industrial (Type M): specs compared
Updated 05 September 2026.
4
specs differ
1/4" Automotive (Type T) and 1/4" Industrial (Type M) differ on 4 specs: interchange, body size, typical port thread, brands.
| Spec | 1/4" Automotive (Type T) | 1/4" Industrial (Type M) |
|---|---|---|
| Interchange | Automotive / Tru-Flate T-style (also Type C) | Industrial / Milton M-style (also Type D, I/M) |
| Body size | 1/4 inch | 1/4 inch (most common home and workshop size) |
| Typical port thread | 1/4 NPT | 1/4 BSP or 1/4 NPT |
| Brands | Tru-Flate, and most US big-box automotive kits | Milton, Amflo, Campbell Hausfeld, PCL |
Questions and answers
How do 1/4" Automotive (Type T) and 1/4" Industrial (Type M) compare?
1/4" Automotive (Type T) and 1/4" Industrial (Type M) differ on 4 specs: interchange, body size, typical port thread, brands.