Store › Sea Swivel 3/4" Nut f/Center Bolt [SEA-HDM-NUT-3/4] Sea Swivel 3/4" Nut f/Center Bolt [SEA-HDM-NUT-3/4] $25.99 3/4" Nut for Center BoltSpecifications: Nut: 3/4" For center bolt Add To Cart Added! 3/4" Nut for Center BoltSpecifications: Nut: 3/4" For center bolt