2" Type A / B (A-A-59326) vs 2-1/2-8 NPT: specs compared

Updated 05 September 2026.

73.02 mm
2-1/2-8 NPT wins on major diameter

On major diameter, 2-1/2-8 NPT leads: 73.02 mm versus 63 mm.

Spec2" Type A / B (A-A-59326)2-1/2-8 NPT
Designation2" Type A / B (A-A-59326)2-1/2-8 NPT
Major diameter63.0 mm73.02 mm
Threads per inch / pitchn/a (lever cam)8
Thread formcam-and-groove, no threadtapered, 60 degree
Seals ongasket compressed by the cam armson the thread flanks with PTFE tape

Questions and answers

Which has the higher major diameter, 2" Type A / B (A-A-59326) or 2-1/2-8 NPT?

On major diameter, 2-1/2-8 NPT leads: 73.02 mm versus 63 mm.

How do 2" Type A / B (A-A-59326) and 2-1/2-8 NPT compare?

On major diameter, 2-1/2-8 NPT leads: 73.02 mm versus 63 mm.

Compared here

2" camlock (cam-and-groove) coupling (2" Type A / B (A-A-59326))2-1/2" NPT (National Pipe Taper) (2-1/2-8 NPT)