This is the bumper that is fitted in the nose cone of Barons to isolate the
mounting of the nose cone to the fuselage. There are two of them in each nose
cone.
The details are below and they have been seen on eBay for about $5 each. See
the old and new bumpers and as mounted in the nose cone below.
Credit for this find goes to Baron owner Bob B.
De-Sta-Co
507208 Flat Tip Spindle, 5/16-18,0.83,3
Model: 507208
Description: Flat Tip Spindle, Thread Size: 43236, End Tip Dia. (In.):