C.E. Smith 9/16"-18 x 3-1/2" Shackle Bolts [11031A]
ELC-49850Shackle Bolts & Lock Nuts - 3-1/2"
Use with heavy duty 9/16" eye springs and spring hanger brackets.
Fluted shank prevents the bolt from turning in the bracket, preventing bracket wear. Sold in pairs.