Originally posted by barondla
Thanks for the idea gentlemen. Hadn't thought of going to Lowes, Menards, or True Value for a fitting. The Pentax has a very large thumb screw. If it could replaced with a standard screw the collar could then rotate in one direction past the prism over hang. The main knob/screw holds collar on lens and locks rotation. The one I want to replace only helps attach the tripod collar to lens. The only use for this knob is to remove tripod collar in the field. Which I never do.
Thanks,
barondla
Depending on the actual store.....Ace can be The Place ! I find all kinds of goodies in my local store !
The pull out bins in the hardware section have saved me many times with camera screws , knobs , etc......