So, because you're an "owner-assisted" annual
kind of person, each year at annual you pull your seats out to allow inspection
of the landing gear transmission and operating mechanism. Sometimes you might
even pull the rear seats out.
If you're like me, one of the biggest pains is
removing the little bolt and nut (some of the older airframes were equipped this
way) that hold the seat stops against the seat rails.
In later years Beech is reported to have used
"Quick Release Pins" in this area instead of the bolt and nut, making things
quite a bit easier and quicker to remove and replace the seat stops.
Yeah, I know what you're thinking, it's still
a PITA back breaker to get the seats aligned on the rails and slid back into
position. But at least with quick release pins your back will be saved a little
for the task of sliding the seats back onto the rails.
The Beech PN for the quick release pins they
use is: BLNC3-11 @ $10.50 on 7/16/2011
The Beech PN for the machined Seat Stop is:
58-530231-1 @ $19.50 on 7/16/2011
Brian M., a 1978 F33A owner, has found PN
McMaster Carr to be a workable quick release pin
replacement for his
aircraft for about $2 in August 2019:
18-8 Stainless Steel Ring-Grip Quick-Release Pin, 3/16" Diameter, 1-1/8"
Some folks have sourced their own replacement
pins using these measurements:
Useable Length 1.404
Grip (wire to ball) 1.040
McMaster-Carr has some nice options in 18-8
w/lanyard in 18-8 stainless PN:
w/o lanyard in 18-8 stainless PN:
in 316 stainless steel w/o lanyard PN: