I went to Puyallup as a sophomore and I am in full time running start this year. In my experience I did not enjoy Puyallup, but I don't enjoy the drama that happens at virtually every high school. The teachers are very competent and responsive to the students.
Hex Socket Stud Type. Stud Type Cam Followers provide efficient cantilever mounting. The hex socket in the integral stud provides additional installation torque for use with self-locking nuts and blind hole mounting, plus allows for easier installation than the alternate screwdriver slot.
Type D, has a female camlock end and a female pipe thread of the same size. Type E, has a male camlock end and a male hose tail on the other. Type F, has a male camlock end and a male pipe thread of the same size. Type DC is an end cap with female camlock.