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

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

Item # CE15283GA-2
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CE Smith 3-13/16 Inch Long Boat Trailer Parts - CE15283GA-2
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These sturdy square U-bolts let you secure 1 double U-bolt bolster bracket or 2 standard bolster or bunk board brackets to your boat trailer's frame. Galvanized steel is durable and corrosion resistant. Hardware included. Call 800-298-1624 to order CE Smith boat trailer parts part number CE15283GA-2 or order online at etrailer.com. Free expert support on all CE Smith products. Guaranteed Lowest Price and Fastest Shipping for CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 2. Boat Trailer Parts reviews from real customers.
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  • Reviews (50)
  • Q & A (23)
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CE Smith Boat Trailer Parts - CE15283GA-2

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

These sturdy square U-bolts let you secure 1 double U-bolt bolster bracket or 2 standard bolster or bunk board brackets to your boat trailer's frame. Galvanized steel is durable and corrosion resistant. Hardware included.


Features:

  • Pair of heavy-duty square U-bolts let you secure a bracket or brackets on your boat trailer
    • Works with 1 double U-bolt bolster bracket or 2 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: 2 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 - Pair




California residents: click here



Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (50 Customer Reviews)

These sturdy square U-bolts let you secure 1 double U-bolt bolster bracket or 2 standard bolster or bunk board brackets to your boat trailer's frame. Galvanized steel is durable and corrosion resistant. Hardware included.

- CE15283GA-2
by:

The length could have been 1/4" longer. Could not get the lock washers on used blue Loctite threadlocker.


Comments
Thank you for your feedback. We do have a longer u bolt part # CE15274A
CE Smith U-Bolt - Zinc Plated - 4-1/4" Long x 3-1/8" Wide x 1/2" Diameter - Qty 1
$10.76
which is 4-14 Long x 3-18 Wide x 12 Diameter.
-- Etrailer Expert Jenny N - 11/05/2021


- CE15283GA-2
by:

I'm not a trailer person but I found "etrailer's" website informative enough to know what I needed. I also had the benefit of an etrailer staff member who knew his products and thus able to make sure I bought the correct pieces. The plus was when the items arrived much sooner than the shipping time they quoted. I have not yet installed the items but hope to do it this week. Excellent source to buy quality trailer parts.



- CE15283GA-2
by:

Used these on my Magic Tilt boat trailer.. Excellent fit



- CE15283GA-2
by:

Great products just wish the shipping end would of kept the box in better condition. Appreciate all the customer service I’ve received and will be using the company soon for another trailer!



- CE15283GA-2
by:

Great bolts



- CE15283GA-2
by:

nice rugged u-bolts, are more than adequate to do the job!



- CE15283GA-2
by:

All of the trailer brackets are good quality. The brackets seem to be priced fair but the U-Bolts are very expensive (double what I would have expected to pay)



- CE15283GA-2
by:

Photo of items in use on boat trailer.



- CE15283GA-2
by:

Good fit with roller, went on easily!



- CE15283GA-2
by:

I worked perfectly



- CE15283GA-2
by:

etrailer.com had everything I needed to replace critical parts for my 34ft. cruiser boat trailer. Reasonable prices and Wow SUPER FAST shipping!! I ordered YATES keel pads, keel rollers, bow rollers, roller end caps, pal nuts, and galvanized square U-bolts. All items were well packaged in one box. It's my second order from etrailer.com, very easy to navigate their inventory. One stop shopping. Absolutely will buy form etrailer again.



- CE15283GA-2
by:

High quality parts and made in the USA



- CE15283GA-2
by:

Great product and has worked very well on my trailer.



- CE15283GA-2
by:

Excellent product, exactly what I was looking for. Thank you for sending it so quickly. Will definitely do more business with etrailer.com



- CE15283GA-2
by:

Heavy duty.



- CE15283GA-2
by:

Excellent product; quick service as promised; kind of pricey but even so seems to be competitive. Would have given 5 stars but haven't used the trailer yet. I'll keep this company.



- CE15283GA-2
by:

Great product and timely delivery even during the pandemic. Appears to be just what I needed to make my boat loading easier.



- CE15283GA-2
by:

Fit my project requirements for my boat trailer rebuild needs.



- CE15283GA-2
by:

Original order was missing some parts, but they quickly sent them after I notified them. Would happily continue to do business with them



- CE15283GA-2
by:

The bolts were delivered on Sunday and I got them installed. Perfect fit.



- CE15283GA-2
by:

Everything I order was excellant . Order was delivered quickly and everything was there. No problems with any of the boat trailer items I purchased



- CE15283GA-2
by:

Great product, reasonably priced and quick shipping



- CE15283GA-2
by:

Working good



- CE15283GA-2
by:

Good



- CE15283GA-2
by:

All ways prompt service. Delivering high quality items. I'll be happy to use them again


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Ask the Experts about this CE Smith Boat Trailer Parts

  • Can I Use Roller Bunks and Carpeted Bunk Boards Together on Boat Trailer
    I'll start off by saying that I've seen quite a few boat trailers that use a combination of rollers like the CE Smith Roller Bunks for Boat Trailers - 6 Rollers Each - 5' Long - 1,500 lbs - 1 Pair # CE27710 and a carpeted bunk like the CE Smith Carpeted Bunk Boards for Boat Trailers - 7' Long - 1 Pair # CE27845. The rollers definitely help if you're on a lot of shallow or steep boat ramps and combining the two gives you the best of both worlds, with the rollers on the bottom and boards...
    view full answer...
  • What Hardware Is Needed To Mount CE Smith Panel Bracket CE10305G For 12" Keel Roller?
    To mount the CE Smith Panel Bracket for 12" Boat Trailer Rollers - Galvanized Steel # CE10305G you were looking at you have two options. The first being welding the bracket to your trailer. If you go this route you need to make sure to sand off the galvanized coating as it gives off a harmful gas when it is welded. The second and more common option is using U-bolts. The U-bolts will need to match the size of the frame on your trailer so you will need to measure that. For example we...
    view full answer...
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  • What Brackets Needed to Install Bunks on Boat Trailer
    We sure do, I'd recommend the # HP52FR bunk bracket and u-bolts like # CE15283GA-2. We also offer pre-carpeted bunks in various lengths, as part # CE27800 for a 3 foot, # CE27810 for a 4 foot, # CE27820 for a 5 foot, # CE27840 for a 6 foot and # CE27845. Or, you can provide your own boards and carpet them using bunk carpet like # CE11349.
    view full answer...
  • How To Mount RC Manufacturing Trailer Tongue Tool Box 350970 Without Drilling Holes In Frame
    Since you are not wanting to drill all the way through the aluminum frame on your H and H trailer, you can use U-bolts like # CE15283GA-2 to go around the frame of your trailer, and up into the RC Manufacturing T-Series Trailer Tongue Tool Box - A-Frame - Aluminum - 2.6 Cu Ft - Silver # 350970 to mount it. The # CE15283GA-2 are galvanized so the will not rust, but you will want to make sure they are large enough for your frame rails. These U-bolts measure 3-13/16" long and 3-1/16" wide,...
    view full answer...
  • Parts Needed to Add Roller Bunks to Boat Trailer
    Probably the easiest way to mount rollers would be to use # DL21755 which would slip onto the existing wood bunks and be bolted into place. For a keel roller, I'd recommend # CE10401G and the proper u-bolt kit, depending on the size of your cross member. For a 3 inch cross member, # CE15283GA-2 would be ideal. The # DL21741 roller bunk you'd looked at would also work, but you'd need brackets like # DL21742 and u-bolts like what's mentioned above.
    view full answer...
  • 8 Inch Bunk Brackets and U-Bolts to Attach Them to 3 Inch Frame
    We do have the parts you need and let's start with the brackets; the 8 inch tall brackets you need are the CE Smith Heavy Duty, Vertical Bunk Brackets # CE10161GA-2. Then in order to mount them to your 3 x 3 frame the U-bolts you need are the CE Smith U-Bolts # CE15283GA-2. I have added links below to video reviews of both parts for you to check out as well if you'd like.
    view full answer...
  • What Are Keel Rollers For On a Boat Trailer and Should I Add One
    The keel rollers on a boat trailer are deigned to absorb shock while loading and launching your boat so you don't put as much stress on other components such as the bunk boards. The correct one will be chosen based on the shape of your boat's hull and the dimensions of the trailer frame. The CE Smith Deep V Keel Roller Assembly part # CE10405G is a great universal option. The only other thing you would need is u-bolts like the CE Smith U-Bolts part # CE15283GA-2 that match your frame. I...
    view full answer...
  • Replacement Keel Roller for my Calkins Boat Trailer
    I have a couple of solutions but the sizes aren't exactly what you're after. I instead recommend using the CE Smith Deep V Keel Roller Assembly for Boat Trailers part # CE10405G to replace the 11.5" roller you currently have. This will allow for adjusting it to match your boats hull. Use CE Smith U-Bolts part # CE15283GA-2 if your hardware is missing or damaged. For the 7.5" use the CE Smith Deep V Keel Roller Assembly for Boat Trailers part # CE10403G with the same hardware as mentioned...
    view full answer...
  • Type And Size Bolts To Attach Swivel Bracket To Carpeted Bunk Board.
    For bunk brackets we have CE Smith Bolster and Swivel Bracket Assemblies # CE10000G-4 as well as others at different lengths. 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 inch diameter. Or you could use # CE15283GA-4 which is the same thing only it comes with 4 U-bolts instead of 2. These mounting slots, are a length of 2-3/4 of an inch. There is a width of a 1/2 inch spacing...
    view full answer...
    Image 1 for
  • Recommended Swivel Bracket for Bunk Board with 2 Inch Bolt Spacing
    The CE Smith Swivel Bracket for Boat Trailers - Galvanized Steel - 2" Hole Centers - Qty 1 # CE10201G will work very well for your application. They are not rated for a specific weight capacity, but they work very well with the CE Smith Double U-Bolt Bolster Bracket - Galvanized Steel - 9-3/4" Tall - Qty 1 # CE10191GA or other heights along with u-bolt kit # CE15283GA-2.
    view full answer...
  • Compatibility of CE Smith Swivel Bracket with HE Parmer Bolster Bracket
    They would indeed work together. The # HP55FR is the portion that would attach directly to the bunk which would attach to the # CE10101G bolster bracket would would attach to the trailer itself. When the bolster and swivel are assembled, they'd look like part # CE10001G. To be honest, I'd recommend simply going with the # CE10001G as the hardware to assemble them is included that way. The angle of the swivel bracket is adjustable. The galvanized u-bolts for attaching the bolster brackets...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • Does CE Smith Bolster Bracket for Boat Trailers # CE10196G have Weight Capacity
    The CE Smith Bolster Bracket for Boat Trailers # CE10196G does not carry a specific weight rating. But since it is made from 1/8-inch-thick galvanized steel in typical use it will be over-rated for the application with plenty of safety margin. For your 2,000 lb boat it would work well and not be under-rated. For swivel brackets you'd then want the part # CE10206G and then for U-bolts you'd want the part # CE15283GA-2.
    view full answer...
  • Availability of 7 Feet Long 2 x 4 Carpeted Bunk Boards for a Boat Trailer
    The longest carpeted bunk boards we currently offer is 6 feet in length. It's the CE Smith part # CE27840 and each 6-foot long 2x4 is covered in marine grade carpet. You can easily construct some bunks yourself. Go to your local lumberyard and get some yellow pine 2x4x10 boards. You can then purchase some of the marine-grade carpet we offer, like part # CE11372. You'll need one roll per bunk, which means you'll have some scrap left over, which you can utilize as needed for other projects....
    view full answer...
  • Hardware Requirements to Install CE Smith Deep V Keel Roller Assembly CE10455G
    The specific hardware to best install the CE Smith Deep V Keel Roller Assembly # CE10455G really depends on the desired mounting point on a particular trailer. U-bolts like # CE15283GA-2 are often a good option but other galvanized hardware you source locally may be better in some cases. Generally one pair of u-bolts would be sufficient for each roller in most typical installations.
    view full answer...
  • Replacement Carpeted Bunks For Boat Trailer Recommendation
    We offer both carpet that you can use to replace your worn carpet on your bunks for your trailer, and we also carry replacement carpeted bunks for your trailer. The carpeted bunks we offer come in varied lengths. If you need 6 ft bunks, I recommend part # CE27840. These come in a set of 2, and is wrapped with marine-grade black carpeting. For 5 ft bunks, you would need part # CE27820, for 4 ft bunks, part # CE27810, and for 3 ft bunks you would need part # CE27800. If you decide...
    view full answer...
  • Recommended Bunk Brackets For Magic Tilt Boat Trailer
    I have an option for you, but we do not have any bunk brackets that match what you currently have installed. Instead I recommend the CE Smith Bolster and Swivel Bracket Assemblies - Galvanized Steel - 9" - Qty 4 # CE10000G-4 which will attach to your Magic Tilt Boat Trailers Frame by a U-Bolt which is not included. These brackets will fit frames up to 6" tall. The correct U-bolts will be dependent on the size of your frame. For example if your frame was 3" x 3" you would need the...
    view full answer...
    Image 1 for Image 2 for
  • Can CE Smith Keel Roller CE29505 be Used With Jon Boat Trailer
    We don't offer 2 inch keel rollers, so you may have meant the 12 inch CE Smith Keel Roller for Boat Trailers - Self Centering - PVC - 12" - 5/8" Shaft - Amber # CE29505. And yes, you can use these on your boat Jon boat trailer, and to do so you will need the Roller Shaft with Pal Nuts for Boat Trailer Rollers - Zinc-Plated Steel - 13" x 5/8" # CE10727A and CE Smith Panel Bracket for 12" Boat Trailer Rollers - Galvanized Steel # CE10305G. The bracket can be installed with U-bolts such...
    view full answer...
  • Which Replacement Bunk Brackets For Boat Trailer
    If you are wanting to use vertical bunk brackets like the CE Smith Heavy Duty, Vertical Bunk Brackets - 90 Degree - Galvanized Steel - 6" Tall - Qty 2 # CE10160GA-2, I recommend using them on the front and rear of the trailer. You will also need CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 2 # CE15283GA-2 to secure the brackets to your trailer frame. If you have a lighter boat and would rather have the bunk brackets that allow you to angle the bunk...
    view full answer...
  • What Additional Bracket is Needed with the Replacement CE Smith Heavy Duty, Vertical Bunk Bracket
    The other bracket mentioned in the description means that you would need two of the part # CE10162GA to stabilize the bunk bracket. For the u-bolts to use with this kit you would want the part # CE15283GA-2.
    view full answer...
  • CE Smith Boat Trailer Compatibility with Inflatable Boat and Outboard Motor on Interstate
    The CE Smith Boat Trailer for Boats and PWCs up to 12' Long - 800 lbs # CE48810 will work well to transport your boat on the interstate. The wheels cannot be switch to the 12 inch size without removing the fenders and adding larger brackets to accommodate the increased diameter. The wheel and tire combinations that come with the trailer are rated for speeds up to 65 mph. If you choose to change the tire size, I don't recommend going over the 12 inch wheels and you can use the Taskmaster...
    view full answer...
  • Can I Weld the CE Smith CE10160GA-2 Heavy Duty, Vertical Bunk Brackets
    Because the CE SMith Heavy Duty, Vertical Bunk Brackets # CE10160GA-2 are galvanized steel, I don't recommend welding them because of the inherent issues that come along with welding on a coated steel. These are designed to be secured to the trailer frame using U-bolts like the # CE15283GA-2, so I do recommend using that method. I've gone ahead and linked our entire selection of u-bolts in case you find that you need something a bit longer, as well.
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Joshua S
Video Edited:
Joshua S
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

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