'90-96 Captain's Chairs
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F4TZ9860094A Driver's base
F4TZ1862506A Passenger base
644A90 is a setscrew with 3mm Allen recessed drive
64488-A is a black nylon spacer with an eccentric lip and a D-hole
64488-B is a steel washer 30mmODx14mmIDx10mmTh (~1.25"ODx9/16"IDx3/8"Th)
64488-C is a slim white nylon washer
64684 is a steel plate with a 10mm hole and a D-hole
* (with no PN) is a black nylon short pushpin
65479 is a steel core with foam (not shown) molded onto it in the armrest shape
See also:
http://www.fordf150.net/forums/viewtopic.php?f=21&t=118769&p=772725#p772725 .
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