2" Type A / B (A-A-59326) vs R2-1/2: specs compared
Updated 05 September 2026.
75.184 mm
R2-1/2 wins on major diameter
On major diameter, R2-1/2 leads: 75.184 mm versus 63 mm.
| Spec | 2" Type A / B (A-A-59326) | R2-1/2 |
|---|---|---|
| Designation | 2" Type A / B (A-A-59326) | R2-1/2 |
| Major diameter | 63.0 mm | 75.184 mm |
| Threads per inch / pitch | n/a (lever cam) | 11 |
| Thread form | cam-and-groove, no thread | tapered, 55 degree |
| Seals on | gasket compressed by the cam arms | on the thread flanks with PTFE tape or paste |
Questions and answers
Which has the higher major diameter, 2" Type A / B (A-A-59326) or R2-1/2?
On major diameter, R2-1/2 leads: 75.184 mm versus 63 mm.
How do 2" Type A / B (A-A-59326) and R2-1/2 compare?
On major diameter, R2-1/2 leads: 75.184 mm versus 63 mm.