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  1. Boat Trailer Parts
  2. Redline
  3. U-Bolts
  4. 4 Inch Long
  5. 7/16 Inch Diameter
  6. Zinc-Plated Steel
Trailer Square U-Bolts (Qty 2), 3-1/8" x 4" x 7/16"
Redline

Trailer Square U-Bolts (Qty 2), 3-1/8" x 4" x 7/16"

Part Number: 7163184UB
In Stock
$23.94
Boat Trailer Parts
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Redline Boat Trailer Parts - 7163184UB

  • U-Bolts
  • 4 Inch Long
  • 7/16 Inch Diameter
  • Zinc-Plated Steel
  • 3-1/8 Inch Wide
  • Redline


Trailer U-bolts ideal for boat, snowmobile, and standard utility trailers.

  • Zinc Plated to resist corrosion
  • Square bend simplifies attachment of hardware to square trailer frames
  • Dimensions:
    • A: 3-1/8"
    • D: 7/16"
    • L: 4"

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7163184UB Trailer Square U-Bolts (Qty 2), 3-1/8" x 4" x 7/16"




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Video of Trailer Square U-Bolts (Qty 2), 3-1/8" x 4" x 7/16"

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Feature Review Trailer Square U-Bolts (Qty 2), 3-1/8" x 4" x 7/16"

Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at the four inch long by 7/16 inch diameter square U-bolts for square frame trailers. This is for a quantity of two bolts. Now, these trailer U-bolts are ideal for boat, snowmobile, and standard utility trailers. The square bend design of the U-bolt simplifies attachment of hardware to your square trailer frame. The parts are zinc plated to resist corrosion, and it does include the two U-bolts, the four flat washers, and the four nyloc nuts.

A few dimensions on this: we mentioned the four inches. The four inches will be measured on the inside to the end of the U-bolt. There's your four inch measurement. The inside dimension is three and 1/8 inches, and the diameter of the U-bolt, again, is 7/16 of an inch. But that should do it for the review on the four inch long by 7/16 of an inch diameter square U-bolts for square frame trailers..

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632 reviews

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Exactly what I wanted and shipped fast.



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See what our Experts say about this Redline Boat Trailer Parts

  • How To Install Roller Bunks on a Malone Watersport Trailer
    In order to convert your Malone trailer from a roof rack on wheels to a full on boat trailer with roller guide-on's, I recommend using the CE Smith Roller Bunks for Boat Trailers part # CE27700 and CE Smith Bolster and Swivel Bracket Assemblies for Roller Bunks part # CE10003G-4. The crossbars and brackets will need to removed and then you can install the swivel brackets to the crossmembers and the bunk rollers to the swivel brackets. That said, you will still need u-bolts that match the...
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  • Grade of Steel Used in the U-Bolt Kit # 7163184UB
    The Redline U-bolts we carry like the part # 7163184UB are Grade 5.
    view full answer...
  • Mounting Instructions for Redline # PF11X35W-2 Fenders
    I do not have instructions, but I can explain how the fender brackets are used. The mounting brackets slide into the underside of the step on either side of the fender with the open end of the bracket facing downward. The fender secures to the bracket by running a bolt (not included) through existing holes in the fender into holes in the bracket. The flat top edge of the bracket attaches to the underside of the trailer frame using U-bolts that are not included. We offer two suitable u-bolts...
    view full answer...
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  • Could U-Bolt # 7163184UB Fit Over 2x4 or 2x6
    The inner width of the U-bolt part # 7163184UB that you referenced is 3-1/8 inches. Since 2x4 boards are actually 3.5 inches long this would not fit the board width-wise. Length wise it would fit both sizes. For width you'd instead need the part # CE15260A.
    view full answer...
  • Would the Single Axle Trailer Fenders # PF11X35W-2 fit on an EZ Loader Trailer with 15 in Wheels
    The Single Axle Trailer Fenders # PF11X35W-2 you referenced are designed to fit 13-15 inch wheels so it should fit your wheels. The fenders are 11-5/16 inches wide by 45 inches long by 13 inches tall, you will need to compare those dimensions to your setup to see if they will be compatible. I also attached a picture that shows how the installation hardware installs on a trailer for you to check out. We offer two suitable u-bolts that might work for you, depending on the height of your...
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  • Will the Stromberg Carlson Bumper Mounted Clothesline Work W/ A 3" Wide Bumper
    No, the Stromberg Carlson Bumper Mounted Clothes Line for RVs # CL-100 will not work because the U-bolts that secure the clothesline to the bumper are going to be too wide because they will only work with 4" square bumpers. You could improvise a bit and use the Trailer Square U-Bolts # 7163184UB instead, however you're going to have to drill new holes into the bit where the original U-bolts would've gone.
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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B

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