Springfield Marine 1100031-1 Pedestal Swivel Non-Lock

I have a 2020 mirrocraft 168 that comes with Springfield base pedestals and posts. Added a casting seat for up front, this mount is the exact on I needed to to attach my new seat to the 3rd factory seat post that was provided to be able to move one of the two seats that came with the boat up to the front casting deck.

Excellent replacement for the old pin style which wore out & flanged/mushroomed the top of the seat post. Had to grind off 1/4” of the seat post to remove the flange created by the worn out old style bushing. Works great now! No more wobbling seat.*** USE BLUE locktight when re-inserting the bolts into the seat bottom*** Otherwise they dangerously work their way loose which may eventually cause the seat to flip over backwards.***

très bien

The plastic sleeve in our original 34 year old die cast seat mount, which unfortunately was not replaced when the bridge seating was rebuilt in 2015 on our 1986 Mainship, had worn to the point that the casting had cracked when trying to tighten the clamp knob on the Captain's chair. The "Captain" was not happy that his seat continually wobbled. The companion seat was not far behind this wobbly situation. Measured the 2 posts with a micrometer and confirmed that thankfully the aluminum posts had not worn. Bolt pattern same as original mounts. Just went to the boat this past week after a 16 month absence due to the pandemic to see the results with these new seat mounts installed (by the same company who had rebuilt the seats in 2015). Rock solid now when tight and easy to swivel when necessary. Great job Springfield Marine!!

I had an older pedestal seat - slightly smaller corner to corner - making it impossible to mount the Office chair seat that I have been using with the older without modifications to my office chair seat.