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Boat Trailer U-Bolts

Check out our Selection of Trailer U-Bolts to fit all your Needs! We have all shapes and sizes available! Square and Round U-Bolts, Stainless Steel Boat Trailer U-Bolts, Hot-Dipped Galvanized Boat Trailer U-Bolts, and Zinc Plated Trailer U-Bolts. From 3/8 inch diameter to 1/2 inch diameter! All U Bolts come with necessary hardware. These U Bolts are stock for all types of Boat Trailers. They will mount Bunk Brackets, Cross-members, Guide Poles, Leaf Springs, Trailer Axles, and much much more.
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Galvanized Round Trailer U-Bolt 1/2 inch x 2 3/8 inch x 5 3/8 inch
OOTB Item Sku: 100741
MPN: N/A

Thread size 1/2"-13

Popular uses: Axle U Bolts

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 2 3/8 inch x 5 3/8 inch
$4.50
In Stock
Trailer Leaf Spring Galvanized U-Bolt Kit fits 2 3/8 inch Round Axles
OOTB Item Sku: 100283
MPN: N/A

Includes Galvanized Hardware

For 2 3/8" Round Trailer Axles

Hot Dipped Galvanized Finish Great for Boat Trailers
Galvanized U-Bolt Kit Round
$27.50
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 4 inch x 2 13/16 inch
OOTB Item Sku: 100769
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 4 inch x 2 13/16 inch
$5.99
In Stock
Stainless Steel U-Bolt 1/2 inch x 3 inch x 4 5/16 inch Trailer U-Bolt
OOTB Item Sku: 100414
MPN: N/A

Mounts to 3" Wide/Tall Material - Usually 3" Wide x 3" Tall Tubing

Popular uses: Bunk Brackets, Crossmembers, Roller Brackets

Stainless Steel Finish Great for Boat Trailers - Includes Hardware
1/2 x 3 x 4 5/16 SS U-Bolt Trailer Mounting Hardware
$9.99
In Stock
Galvanized U-Bolt 1/2 inch x 3 inch x 4 5/16 inch for Boat Trailer
OOTB Item Sku: 100408
MPN: N/A

Mounts to 3" Wide/Tall Material - Usually 3" wide x 3" tall Tubing

Popular uses: Bunk Brackets, Crossmembers, Roller Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 x 3 x4 5/16 Galv Ubolt
$4.50
In Stock
Galvanized Square Ubolt 1/2 inch x 2 1/16 inch x 4 5/16 inch
OOTB Item Sku: 100423
MPN: US1201405G

Mounts to 2" Wide/Tall Material - Fits up to 3 1/2" Tall Material

Popular uses: Axle U Bolts, Spring Sliders, Winch Post

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 x 2 1/16 x4 5/16 Galv Ubolt
$3.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 1 5/8 inch x 4 1/4 inch
OOTB Item Sku: 100720
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 1 5/8 inch x 4 1/4 inch
$3.99
In Stock
Trailer Leaf Spring Galvanized U-Bolt Kit Fits 2 x 2 Axle 5 1/4 in long
OOTB Item Sku: 100359
MPN: N/A

Includes Galvanized Hardware

For 2" x 2" Trailer Axles

Hot Dipped Galvanized Finish Great for Boat Trailers
Trailer Leaf Spring Galvanized U-Bolt Kit
$21.99
In Stock
Galvanized U-Bolt 1/2 inch x 3 1/16 inch x 3 5/16 inch
OOTB Item Sku: 100413
MPN: N/A

Mounts to 3" Wide/Tall Material - Usually 2" Wide x 3" Tall Tubing

Popular uses: Bunk Brackets, Crossmembers, Roller Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 in x 3 1/16 in x 3 5/16 in Galv Ubolt
$4.50
In Stock
Trailer Leaf Spring Galvanized U-Bolt Kit,Fits 2 x 2 Axle,4 13/16 Long
OOTB Item Sku: 100282
MPN: N/A

Includes Galvanized Hardware

For 2" x 2" Trailer Axles

Hot Dipped Galvanized Finish Great for Boat Trailers
Galvanized U-Bolt Kit
$21.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 inch x 7 3/4 inch
OOTB Item Sku: 100756
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 inch x 7 3/4 inch
$7.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 2 inch x 3 3/8 inch
OOTB Item Sku: 100721
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets, Winch Stand

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 2 inch x 3 3/8 inch
$4.99
In Stock
Galvanized U Bolt Plate for 3/8
OOTB Item Sku: 101129
MPN: 46-P2

Made 1/4" Thick Galvanized Steel

3/8" Holes Drilled 2 inches Apart

Great for U Bolts 2 inches Wide
Galvanized U bolt Mounting Plate for 3/8 inch diameter U Bolt
$4.99
In Stock
Stainless Steel Square Ubolt 3/8 inch x1 9/16 inch x 2 1/2 inch
OOTB Item Sku: 100427
MPN: N/A

Mounts to 1 1/2" Wide/Tall Material

Popular uses: Guide Poles

Stainless Steel Finish Great for Boat Trailers - Includes Hardware
3/8 in x 1 9/16 in x2 1/2 in Stainless Steel Ubolt
$6.50
In Stock
Trailer Leaf Spring Stainless Steel U-Bolt Kit Fits 2 x 3 Axles 6 ¼ in
OOTB Item Sku: 100614
MPN: N/A

Includes Stainless Steel Hardware

For 2" x 3" Trailer Axles

Stainless Steel will not Rust
Stainless Steel Leaf Spring Boat Trailer U-Bolt Kit
$49.99
In Stock
Galvanized Square Ubolt 3/8 inch x1 9/16 inch x 2 1/2 inch
OOTB Item Sku: 100426
MPN: N/A

Mounts to 1 1/2" Wide/Tall Material

Popular uses: Guide Poles

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
3/8 inch x 1 9/16 inch x2 1/2 inch Galv Ubolt
$3.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 2 inch x 6 7/8 inch
OOTB Item Sku: 100724
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 2 inch x 6 7/8 inch
$4.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 3 inch x 3 7/8 inch
OOTB Item Sku: 100726
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 3 inch x 3 7/8 inch
$4.99
In Stock
Trailer Leaf Spring Galvanized U-Bolt Kit,Fits 2 x 2 Axle,4 5/16 Long
OOTB Item Sku: 100972
MPN: N/A

Includes Galvanized Hardware

For 2" x 2" Trailer Axles

Hot Dipped Galvanized Finish Great for Boat Trailers
Galvanized U-Bolt Kit
$21.99
In Stock
 Leaf Spring Stainless Steel U-Bolt Kit Fits 2 x 2 Axles 5 1/4 in Long
OOTB Item Sku: 100619
MPN: N/A

Includes Stainless Steel Hardware

For 2" x 2" Trailer Axles

Stainless Steel will not Rust
Trailer Leaf Spring Stainless Steel U-Bolt Kit
$48.99
In Stock
 Trailer Leaf Spring U-Bolt Kit Round Oiled fits 3 inch Round Axles
OOTB Item Sku: 100285
MPN: N/A

Includes Oiled Steel Hardware

For 2 3/8" Round Trailer Axles

Raw Steel Finish Can be Painted to Match your Trailers
U-Bolt Kit Round Oiled
$28.99
In Stock
1 1/2 inch Diagonal Galvanized Boat Trailer Leaf Spring U-Bolt Kit
OOTB Item Sku: 100481
MPN: N/A

Uses 1/2" x 2 5/8" x 3 9/16" U Bolts and 3 Hole Plate

One Kit completes (1) Axle mounts to Leaf springs

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Trailer leaf spring axle u-bolt kit 1 1/2 inch Diagonal
$14.99
In Stock
2 inch Diagonal Galvanized Boat Trailer Leaf Spring U-Bolt Kit
OOTB Item Sku: 100480
MPN: N/A

Uses 1/2" x 3 1/16" x 4 5/16" U Bolts and 3 Hole Plate

One Kit completes (1) Axle mounts to Leaf springs

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Trailer leaf spring axle u-bolt kit 2 inch Diagonal
$18.50
In Stock
Aluminum Frame Plate 6 1/2
OOTB Item Sku: 101125
MPN: 14134

Made of 3/8" Thick Aluminum

Has 1/2" Slotted holes for 3 1/2" Wide and 4 1/2" Wide U Bolts

Ideal for mounting frame material
Aluminum U Bolt Plate for Trailer Tongue or Bunk Bracket
$9.99
In Stock
Aluminum Frame Plate 6
OOTB Item Sku: 101123
MPN: 14133

Made of 3/8" Thick Aluminum

Has 1/2" Slotted holes for 3" Wide and 4" Wide U Bolts

Ideal for mounting frame material
Aluminum U Bolt Plate for Trailer Tongue or Bunk Bracket
$8.99
In Stock
Aluminum Frame Plate 8 1/4
OOTB Item Sku: 101126
MPN: 46-P32A

Made of 3/8" Thick Aluminum

Has 1/2" Holes for 1/2" Trailer Bolts

Ideal for mounting frame material
Aluminum U Bolt Plate for Trailer Tongue or Bunk Bracket
$9.99
In Stock
Aluminum Frame Plate 8 1/4
OOTB Item Sku: 101124
MPN: 46-P38A

Made of 1/4" Thick Aluminum

Has 3/8" Pre Drilled Holes for 3/8" Bolts

Ideal for mounting frame material
Aluminum U Bolt Plate for Trailer Tongue or Bunk Bracket
$10.50
In Stock
Galvanized Round Trailer U-Bolt 1/2 inch x 2 inch x 5 inch
OOTB Item Sku: 100740
MPN: N/A

Thread size 1/2"-13

Popular uses: Axle U Bolts

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 2 inch x 5 inch
$4.50
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 1 7/8 inch x 5 inch
OOTB Item Sku: 100736
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Spring Hangers, Axle U Bolt

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 1 7/8 inch x 5 inch
$5.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 2 5/16 inch x 5 11/16 inch
OOTB Item Sku: 100738
MPN: N/A

Thread size 1/2"-13

Popular uses: Sring Slider, Frame U Bolts

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 2 5/16inch x 5 11/16 inch
$6.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 2 5/16 inch x 7 1/4 inch
OOTB Item Sku: 100739
MPN: N/A

Thread size 1/2"-13

Popular uses: Sring Slider, Frame U Bolts

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 2 5/16inch x 7 1/4 inch
$6.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 2 5/8 inch x 4 9/16 inch
OOTB Item Sku: 100752
MPN: N/A

Thread size 1/2"-13

Popular uses: Axle U Bolts, Cross Member, Frame Components

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 2 5/8 inch x 4 9/16 inch
$6.50
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 2 inch x 7 5/16 inch
OOTB Item Sku: 100737
MPN: N/A

Thread size 1/2"-13

Popular uses: Axle U Bolts, Frame U Bolts

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 2 inch x 7 5/16 inch
$5.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 13/16 inch x 7 inch
OOTB Item Sku: 100768
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 13/16 inch x 7 inch
$8.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 3/8 inch x 6 3/16 inch
OOTB Item Sku: 100758
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 3/8 inch x 6 3/16
$7.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 inch x 2 1/2 inch
OOTB Item Sku: 100753
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 inch x 2 1/2 inch
$3.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 inch x 5 5/16 inch
OOTB Item Sku: 100754
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 inch x 5 51/6 inch
$4.50
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 inch x 6 5/16 inch
OOTB Item Sku: 100755
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 inch x 6 51/6 inch
$5.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 3 inch x 8 3/4 inch
OOTB Item Sku: 100757
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 3 inch x 8 3/4 inch
$8.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 4 5/16 inch x 7 1/2 inch
OOTB Item Sku: 100767
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 4 5/16 inch x 7 1/2 inch
$7.99
In Stock
Galvanized Square Trailer U-Bolt 1/2 inch x 4 7/8 inch x 8 5/16 inch
OOTB Item Sku: 100766
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Roller Brackets, Spring Sliders, Winch Post Assembly

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 1/2 inch x 4 7/8 inch x 8 5/16 inch
$8.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 2 inch x 4 3/8 inch
OOTB Item Sku: 100723
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets, Winch Stand

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 2 inch x 4 3/8 inch
$4.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 2 inch x 8 inch
OOTB Item Sku: 100725
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 2 inch x 8 inch
$7.99
In Stock
Galvanized Square Trailer U-Bolt 3/8 inch x 3 inch x 5 13/16 inch
OOTB Item Sku: 100727
MPN: N/A

Thread size 3/8"-16

Popular uses: Bunk Brackets, Guide Pole Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 3/8 inch x 3 inch x 5 13/16 inch
$3.99
In Stock
Galvanized Square Trailer U-Bolt 7/16 inch x 4 inch x 2 7/8 inch
OOTB Item Sku: 100735
MPN: N/A

Thread size 7/16"-14

Popular uses: Bunk Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
Hot Dipped Galvanized Trailer U Bolt 7/16 inch x 4inch x 2 7/8 inch
$5.99
In Stock
Galvanized Square U bolt 1/2 x 2 5/8 x 3 9/16
OOTB Item Sku: 100479
MPN: N/A

Thread size 1/2"-13

Popular uses: Bunk Brackets, Crossmembers, Axles, Roller Brackets

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 x 2 5/8 x3 9/16 Galv Ubolt
$4.50
In Stock
Galvanized Square Ubolt 1/2 inch x 2 1/16 inch x 5 5/16 inch
OOTB Item Sku: 100424
MPN: N/A

Mounts to 2" Wide/Tall Material - Fits up to 4 1/2" Tall Material

Popular uses: Axle U Bolts, Spring Sliders, Winch Post

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 x 2 1/16 x5 5/16 Galv Ubolt
$4.50
In Stock
Galvanized Square Ubolt 1/2 inch x 2 1/16 inch x 6 5/16 inch
OOTB Item Sku: 100425
MPN: N/A

Mounts to 2" Wide/Tall Material - Fits up to 5 1/2" Tall Material

Popular uses: Axle U Bolts, Spring Sliders, Winch Post

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 x 2 1/16 x6 5/16 Galv Ubolt
$4.50
In Stock
Galvanized Square Ubolt 1/2x 2 1/16x 4 13/16
OOTB Item Sku: 100422
MPN: N/A

Mounts to 2" Wide/Tall Material - Fits up to 3 1/2" Tall Material

Popular uses: Axle U Bolts, Spring Sliders, Winch Post

Hot Dipped Galvanized Finish Great for Boat Trailers - Includes Hardware
1/2 x 2 1/16 x4 13/16 Galv Ubolt
$3.99
In Stock
Galvanized U Bolt Plate for 3/8
OOTB Item Sku: 101128
MPN: 46-P3

Made 1/4" Thick Galvanized Steel

3/8" Holes Drilled 3 inches Apart

Great for U Bolts 3 inches Wide
Galvanized U bolt Mounting Plate for 3/8 inch diameter U Bolt
$4.99
In Stock
 
 
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