The A-810 friction lock control is similar to the A-800 control but with 1/4-28 threaded end (non-swiveling). With Teflon™ liner. Travel: 3-3/8". The 1-1/4" dia. solid knob is available in black or blue (blue knob has smooth profile, not FAA style). 1/2" panel thread. Lengths are measured from under panel nut to end of threaded shaft with knob pushed in.
Made in USA
No, these controls are not FAA Approved. There are some A-800 controls that are FAA Approved for installation in Cessna aircraft.