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  1. Boat Trailer Parts
  2. CE Smith
  3. U-Bolts
  4. 1/2 Inch Diameter
  5. 3-13/16 Inch Long
  6. Galvanized Steel
CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 4

CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 4

Item # CE15283GA-4
Our Price: $51.91
Boat Trailer Parts
Shipping Weight: 3 lbs
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These sturdy square U-bolts let you secure 2 double U-bolt bolster brackets or 4 standard bolster or bunk board brackets to your boat trailer's frame. Galvanized steel is durable and corrosion resistant. Hardware included. 1-800-940-8924 to order CE Smith boat trailer parts part number CE15283GA-4 or order online at etrailer.com. Free expert support on all CE Smith products. Great prices and Fastest Shipping for CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 4. Boat Trailer Parts reviews from real customers.
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  • Reviews (121)
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CE Smith Boat Trailer Parts - CE15283GA-4

  • U-Bolts
  • 1/2 Inch Diameter
  • 3-13/16 Inch Long
  • Galvanized Steel
  • 3-1/16 Inch Wide
  • CE Smith

These sturdy square U-bolts let you secure 2 double U-bolt bolster brackets or 4 standard bolster or bunk board brackets to your boat trailer's frame. Galvanized steel is durable and corrosion resistant. Hardware included.


Features:

  • 4 Heavy-duty square U-bolts let you secure brackets on your boat trailer
    • Works with 2 double U-bolt bolster brackets or 4 standard bolster or bunk board brackets
    • Designed for use with brackets that have 1/2" diameter mounting holes or 1/2" wide mounting slots
  • Galvanized steel resists rust and corrosion
    • Suitable for saltwater exposure
  • Includes mounting hardware
  • Made in the USA


Specs:

  • Quantity: 4 U-bolts
  • Inner width: 3-1/16"
  • Length: 3-13/16"
  • Bolt size: 1/2"-13
  • Thread length: 1-1/2"
  • Overall length: 4-5/16"


dimensions

Galvanized Steel

Galvanized steel parts are hot-dipped in zinc after being stamped. This creates a coating that is typically 3 mil to 5 mil thick. This thick, all-around coating allows galvanized steel products to provide years of use without rusting or corroding.



15283GA C. E. Smith Galvanized Square U-Bolts for Boat Trailer Brackets - Quantity 4




California residents: click here


Customer Satisfaction Score:


Customer Reviews

CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 4 - CE15283GA-4

Average Customer Rating:  4.7 out of 5 stars   (121 Customer Reviews)

These sturdy square U-bolts let you secure 2 double U-bolt bolster brackets or 4 standard bolster or bunk board brackets to your boat trailer's frame. Galvanized steel is durable and corrosion resistant. Hardware included.

by:

Thanks to Trevor, who understood my Malone Microsport trailer better than I did. Need ubolts to attach boat bunk risers to the frame. When I got the ubolts I checked them on the side rails - and they were too small. I was ready to send them back when I figured I’d check them on the cross members, which go INSIDE the side rails and Voila! Perfect fit. One would think that, having assembled the trailer, I would have remembered that. The risers go on the cross members, not the side rails. Guess that’s why I called to make the order - etailer staff know their stuff! Thanks, Trevor!



by:

Excellent galvanized coating. Quality hardware, i tightened down a good bit on them and no problems. Good stuff!



by:

Exactly what I wanted and They gave me all the help I needed

Daniel

3/3/2024

Everything is still working just like its supposed to! Thanks you guys

Etrailer Expert

Jerred H.

3/4/2024

@Daniel You're welcome!


by:

Used these as part of a full boat trailer rebuild. They were sized perfectly and of very high quality. After a year of use these are performing excellently.



by:

They where easy to install... Heavy duty ... Worth every penny big to Etrailer...



by:

My jetski trailer needed new bunks and hardware, I called these guys to verify what I needed. They hooked my up with good quality parts. I do wish however they would have included the lag screws needed for the bunks.

Eric

5/29/2017

Still great



by:

Good quality product. Unfortunately, I need a shorter u-bolt length to fit the frame on my trailer, so will be returning.



by:

Ordering was smooth and shipped out from ETRAILER was lightning fast.
U Bolt and Bolster bracket are heavy duty enough. They should screw down the swivel on bolster bracket a lot more because it was pretty annoying moving around while mounting it.
The guide rail bracket holes were a bit too close to the frame, making it difficult to use a ratchet
end wrench placement and removal difficult. Without using ratchet, it will take you several minutes to put a nut on just one.
Quality is good!



by:

Exactly what I needed



by:

The U-bolts need to be threaded further up the bolt. It may work ok for larger sized boat trailers that have thicker rails. I have a 16 foot jon boat that has a trailer with rails that are thinner in depth. So matter which way I placed the bracket, the u-bolt would not tighten all the way down. I had to create a spacer to be able to tighten the bracket with the u-bolt. Threading the bolt further would solve the problem.



by:

Very impressed with e trailer everything I ordered was received the way I wanted it everything works great rebuilt a boat trailer From the ground up very happy still tows down the highway no problems

Eric V.

8/22/2017

The product is still working great !



by:

bolted right up. Could not be happier.



by:

Completely updated the axle, suspension, and added roller bunks to my waverunner trailer. Have taken the waverunner in for the winter and back out for the summer one time. All components were great and the trailer rides really well!



by:

Good quality U-bolts and swivel bracket assemblies. They are not a direct fit for my Caulkins trailer. I will have to devise a tapered shim for the bolsters so that they will run parallel to the outside rails. I had not counted on a custom installation.



by:

Shipping box half open. More tape?? bolt package open not all lock washers included. Nothing major. I’ll get another one at Lowes

Etrailer Expert

Jenny N.

4/7/2022

I will have our Customer Service team reach out to you.



by:

All the parts came as ordered,very pleased with everything. Got the bunk boards mounted and my boat seems to sit on them as i expected. I purchased stainless steel lag bolts to attach the bunks to the brackets. Parts arrived UPS all packaged in a large box with lots of packing paper,loose items all wrapped nice so nothing got lost.



by:

Service and follow up was phenomenal.



by:

all expected parts arrived in excellent condition and as promised.
dimensional diagrams for the CE Smith Bolster & Swivel bracket would be helpful for choosing an accurate size.

Otherwise, I'm very satisfied with my order.



by:

Exactly what I needed. Easy checkout and Very fast shipping.



by:

The products purchased were solid and of good quality. I'm impressed.
We purchased a used Jon boat and are upgrading the trailer and boat to for our satisfaction. We would not hesitate to purchase other products for etrailer. The videos were very helpful and informative. If I can I will add photos of before and after, soon.



by:

GREAT Customer Service!! Seth worked with me to get the exact size and type of bolts needed for the job. Prompt delivery and up to date tracking. This is how a business should handle their customers. Bolts are heady duty galvanized. Will easily replace the rusted bolts that hold the bunk board brackets.



by:

Good quality product. Seems to be well constructed. All parts were included. The best part was not having to hunt down individual components when you can buy a complete set. Packaging was good. This will make installation of bolster brackets for my boat trailer a breeze. I would definitely buy from etrailer in the future.



by:

Bought several parts from eTrailer to complete this restoration and transformation of a 1958 trailer to suit my needs today. Couldn't have done it in only 4 days without the help from this great company with quality products!



by:

The parts came quickly, all well packed. The coating on them seems very good. Love the way the nuts and washers are packaged and ty wrapped to the u bolts. They should work out well.



by:

etrailer has always delivered for me. I’ve ordered a wide range of items which get here on time and good quality. These 1/2” galvanized U bolts were perfect for my boat trailer rebuild!


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Show More Reviews

See what our Experts say about this CE Smith Boat Trailer Parts

  • Recommended U-Bolts for Bracket Replacement on Boat Trailer With 3x3 Frame
    For U-bolts for your 3" x 3" frame you will want something that is slightly larger. If the measurements were listed as exactly 3" it isn't going to fit. What you need is the CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter # CE15283GA. These U-bolts are the right size for your frame with a 3-1/16" width. They come in various quantities depending on your needs. 2 Bolts # CE15283GA-2 4 Bolts # CE15283GA-4 8 Bolts # CE15283GA-8 I have attached a review video for...
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  • Recommended Bunk Brackets For Pontoon Boat Trailer
    If there is no flex in the bunks with the pontoon boat loaded, you should be fine with the 1/2 inch clearance. If you are possibly hitting the frame of the trailer when traveling I recommend replacing the bunk brackets with taller ones like part # CE10161GA. This bracket sits on top of the frame of the trailer and are 8 inches tall, and 5 inches wide with 4 mounting holes that are spaced 1-1/2 inches apart center to center. This will give you options to mount the bunks at the height you...
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  • Distance Between 1st & 3rd Bolt Holes of Replacement CE Smith Heavy Duty Vertical Bunk Bracket
    The distance from the center of the top bolt hole to the center of the third bolt hole from the top is 3 inches for the Replacement CE Smith Heavy Duty, Vertical Bunk Bracket # CE10162GA. These brackets are 10" tall x 5" wide and to install require 1/2" diameter U-bolts to such as the CE Smith U-Bolts # CE15283GA-4. I have added a link below to a video review for you to check out as well as a link to our selection of 1/2" diameter U-bolts if you also need those.
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  • Is Mounting Hardware Included with CE Smith Bolster and Swivel Bracket Assemblies, # CE10000G-4
    The CE Smith Bolster and Swivel Bracket Assemblies, # CE10000G-4, do not come with any mounting hardware. Because the brackets can be used for different size and type bunks they do not include the hardware because it would not cover all applications. The holes that attach the bunk board to the swivel bracket are 3/8 inches in diameter. To attach the brackets to the trailer frame you can use U-bolts such as # CE15283GA-2 which are 3-13/16 inches long, 3-1/16 inches wide, and have a 1/2...
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  • Which Replacement Bunk Brackets For Boat Trailer
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  • U-Bolt Recommendation for the CE Smith Heavy Duty, Vertical Bunk Brackets # CE26233-34GA
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  • How Do CE Smith Heavy Duty, Vertical Bunk Brackets CE26233-34GA Get Installed?
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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
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Video Edited:
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Employee Cole B
Installed by:
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Updated by:
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