i have 1993 f-150, 1/2 ton 2wd. each of the rear leaf springs are connected to the frame by a shackle. the shackles connect to a piece that bolts to the frame and the shackle. that piece has rusted though on the left side. what is it called so can order and install a new one?

 

Technically it's a "rear spring shackle bracket" per the Ford shop manual, but everyone on the planet calls it a "spring hanger" or "hanger"

 

Over on fullsizebronco.com they say that part is avail at the dealer for a fair price. Seemed hard to get anywhere else.