Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card.
| Brand | Seachoice |
| Type | SQ , SQ |
| A | 3-1/16" , 3-1/16" |
| B | 2-13/16" , 2-13/16" |
| C | 1-3/4" , 1-3/4" |
| For | Bolster Brackets for 3" Frames , Bolster Brackets for 3" Frames |
| Thread | 7/16"-14 , 7/16"-14 |