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U Bolt Mounting Plates and Shackles

Boat Trailer Frame Plates and Shackles are used in many different areas of Boat Trailers. Some common used include Trailer Leaf Springs, Spring Slider Assemblies, Fender Bracket Mounts, Winch Posts, and Trailer tongues. We have a large selection available to be used with 3/8" Diameter and 1/2" Diameter U Bolts and Bolts. We additionally have many different width options. You will select the correct shackle based of the Diameter of U Bolt used and the Width of the U Bolt used. We have these U Bolt plates available in aluminum, galvanized, and raw steel. 
Total Items: 15
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Trailer Leaf Spring Shackle Steel 2 1/4 in Center Hole, 3 1/2 in Overall
Item Sku: 100286
MPN: N/A

For Use with 9/16" Leaf Spring Bolts

Used for Double Eye Leaf Springs

Raw Steel Finish Can be Painted to Match your Trailers
Spring Shackle
$2.99
In Stock
Trailer Leaf Spring Shackle Steel 2 1/2 in Center Hole, 3 3/4 in Overall
Item Sku: 100287
MPN: N/A

For Use with 9/16" Leaf Spring Bolts

Used for Double Eye Leaf Springs

Raw Steel Finish Can be Painted to Match your Trailers
Raw Steel Leaf Spring Shackle for 9/16 inch Spring Bolts
$2.50
In Stock
Trailer Leaf Spring Shackle Steel 3 1/8 in Center Hole, 4 3/8 in Overall
Item Sku: 100288
MPN: N/A

For Use with 9/16" Leaf Spring Bolts

Used for Double Eye Leaf Springs

Raw Steel Finish Can be Painted to Match your Trailers
Spring Shackle for 9/16 inch Spring Bolts 3 1/8 inches Center To Center
$2.99
In Stock
Boat Trailer Leaf Spring Shackle Galvanized 2 1/4 inch Center Hole
Item Sku: 100289
MPN: N/A

For Use with 1/2" Leaf Spring Bolts

Used for Double Eye Leaf Springs or U Bolt Plate

Hot Dipped Galvanized Finish Great for Boat Trailers
Spring Shackle Galvanized Strap Link for boat Trailer Leaf Spring Suspension
$2.50
In Stock
Boat Trailer Leaf Spring Shackle Galvanized 2 1/2 inch Center Hole
Item Sku: 100290
MPN: 20016G

For Use with 1/2" Leaf Spring Bolts

Used for Double Eye Leaf Springs or U Bolt Plate

Hot Dipped Galvanized Finish Great for Boat Trailers
Spring Shackle Galvanized for Boat Trailer Double Eye Leaf Spring
$2.50
In Stock
Boat Trailer Leaf Spring Shackle Galvanized 3 1/2 inch Center Hole
Item Sku: 100291
MPN: 20017G

For Use with 1/2" Leaf Spring Bolts

Used for Double Eye Leaf Springs or U Bolt Plate

Hot Dipped Galvanized Finish Great for Boat Trailers
Spring Shackle Galvanized for Boat Trailer Leaf Spring Suspension
$2.50
In Stock
Boat Trailer Leaf Spring Shackle Galvanized 3 3/4 inch Center Hole
Item Sku: 100292
MPN: N/A

For Use with 1/2" Leaf Spring Bolts

Used for Double Eye Leaf Springs or U Bolt Plate

Hot Dipped Galvanized Finish Great for Boat Trailers
Spring Shackle Galvanized for boat Trailer Double Eye Trailer Leaf Spring Suspension
$5.50
In Stock
Aluminum Frame Plate 6
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
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
Aluminum Frame Plate 6 1/2
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 8 1/4
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
Galvanized U Bolt Plate for 3/8
Item Sku: 101127
MPN: 46-P4

Made 1/4" Thick Galvanized Steel

3/8" Holes Drilled 4 inches Apart

Great for securing Frame Material
Galvanized U bolt Mounting Plate for 3/8 inch diameter U Bolt
$4.99
In Stock
Galvanized U Bolt Plate for 3/8
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
Galvanized U Bolt Plate for 3/8
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 Boat Trailer Leaf Spring Shackle  2 1/2 inch Center Hole
Item Sku: 101407
MPN: 25421

For Use with 1/2" Leaf Spring Bolts

Used for Double Eye Leaf Springs or U Bolt Plate

Full Stainless Steel - Great for Boat Trailers
Spring Shackle Stainless Steel for Boat Trailer Double Eye Leaf Spring
$6.99
In Stock
 
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