Hey there,
Its hard to see the words above my photo's.
The pivot is 416 stainless, heat treated by Paul Bos.
The screw can be removed with a .125 hex wrench. I Locktite the sht out of them though.
The best way I have found to clean em is with spray break cleaner. Spray it in and its dry and clean. Works great.
Talk to you soon
SK