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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-Bolt - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 1

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

Item # CE15283GA
Our Price: $19.89
Boat Trailer Parts
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Square U-bolt is designed to help secure a bolster or bunk board bracket to your boat trailer's frame. Multipurpose U-bolt can be used for a variety of other applications. Galvanized steel is durable and corrosion resistant. Hardware included. 1-800-940-8924 to order CE Smith boat trailer parts part number CE15283GA or order online at etrailer.com. Free expert support on all CE Smith products. Great prices and Fastest Shipping for CE Smith U-Bolt - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 1. Boat Trailer Parts reviews from real customers.
  • All Info
  • Reviews (16)
  • Q & A (0)
  • Photos

CE Smith Boat Trailer Parts - CE15283GA

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

Square U-bolt is designed to help secure a bolster or bunk board bracket to your boat trailer's frame. Multipurpose U-bolt can be used for a variety of other applications. Galvanized steel is durable and corrosion resistant. Hardware included.


Features:

  • Heavy-duty square U-bolt lets you secure a bracket to your boat trailer
    • Designed for use with bolster or bunk board 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: 1 U-bolt
  • 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-Bolt for Boat Trailer Brackets




California residents: click here



Customer Reviews

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

Average Customer Rating:  4.4 out of 5 stars   (16 Customer Reviews)

Square U-bolt is designed to help secure a bolster or bunk board bracket to your boat trailer's frame. Multipurpose U-bolt can be used for a variety of other applications. Galvanized steel is durable and corrosion resistant. Hardware included.

by:

These are prefect for the size of my trailer to hold on the new bunk brackets
Measure your trailer carefully, a couple of times. These made installation so easy.
Check out the weight of your boat.



by:

Very satisfied with the brackets I bought. Great price, great quality, and quick shipping! No issues at all in 1 year, and after a summer of boating, and a full season of duck hunting in freezing weather, they still look brand new!



by:

As always, all ordered items arrived in a timely manner and were all exactly as advertised. Several are already in service on my boat trailer.



by:

Received my order quickly and all the items worked as promised, which is not always the case when ordering from the internet.



by:

All the parts I ordered came to me in good shape and in a timely manor. They appear to be of very good quality. Now all I have to do it get them installed.



by:

The stuff is failing wish I had not bought it



by:

Had to clean up the threads before I could put these on due to the way they galvanize them.



by:

Good coating and very strong bolt.



by:

Great value, great price~! Fast shipping!



by:

Heavy duty. Better than expected. Exactly as described



by:

As usual fast and courteous service



by:

Perfect. Thanks.



by:



by:

Easy, fast, no flaws



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16
16

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

  • Bunk Brackets and U-Bolts for Converting Roller Bunks to Wood Bunks
    We have bunk bracket u-bolts with the part # CE15283GA which you could use with swivel bunk brackets part # CE10002G-4 which is a set of 4. Then for bunks the longest set we have that are carpeted is the # CE27845 which is 7 foot in length. This may work for you but if you needed longer you'd have to source them elsewhere.
    view full answer...
  • 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...
    view full answer...
  • Replacement U-Bolts for Bunks on Escort Bunk Trailer
    We have bunk U-bolts like the CE Smith part # CE15283GA which measure 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter which is a very common size that would most likely be what you'd need. I'd recommend checking out the size you have now and comparing them to these. If you need something different let me know.
    view full answer...
  • Are There Galvanized and Stainless Steel U-Bolt Options Available
    Yes, we do have stainless steel and galvanized square u-bolts available. The CE Smith U-Bolt - Stainless Steel # CE15501A has the same 4" Long x 2-1/8" Wide x 7/16" Diameter measurements as the Trailer Square U-Bolts # 7162184UB you were looking at. I have also listed all of our galvanized and stainless u-bolts below for you. Galvanized: - CE Smith U-Bolt - Galvanized - 4-1/16" Long x 1-9/16" Wide x 1/2" Diameter # CE15282GA - CE Smith U-Bolt - Galvanized - 3-9/16" Long x 1-9/16" Wide...
    view full answer...
  • Replacement U-Bolt For Thule Mountaineer ES Roof Top Ski Carrier
    While we do not sell that exact replacement U-bolt for your Thule Mountaineer ES roof carrier, we do have a similar U-bolt that may work CE Smith U-Bolt - Galvanized # CE15283GA. This measures 4-5/16" long, has inner width of 3-1/16", and thread length of 1-1/2". The diameter is 1/2". You can compare this to your U bolt to verify fitment. If it will not work, you can try reaching out to Thule to see if they have any replacement parts for your older Thule ski roof top carrier. I have attached...
    view full answer...
  • Recommended Roller Bunks For Tri-hull of Restored 1974 AMF Crestliner Muskee
    Thank you for your service. For your 1974 AMF Crestliner Muskie, from what I can find online is a nice boat that will work really well with roller bunks on the trailer. I recommend the Dutton-Lainson Boat Trailer Deluxe Roller Bunk - 5' Long Sections - 12 Sets of 3 Rollers # DL21741 you mentioned. This will allow you to launch easily. You will want to make sure you have a rope to hold onto your boat as I've heard of people being ill prepared for such an easy launch compared to bunk...
    view full answer...
  • Replacement Bunk Bracket for Magic Tilt Boat Trailer
    The best option we have for what you are looking for is the CE Smith Heavy Duty Vertical Bunk Bracket part # CE10161GA which measures to be 8" tall. Although we do not have a 7-1/4" tall bunk bracket, the above can be made to work for you. In order to attach this to your trailer frame you can use the CE Smith U-Bolt part # CE15283GA.
    view full answer...
  • Replacement Bunk Boards, Brackets and Hardware for PWC Trailer
    We have 6 foot long bunk boards like the part # CE27840 that you could use with the part # CE10003G and with the hardware kit # CE15283GA.
    view full answer...
  • What Size Bunk Rollers Should I Use to Repalce 6 foot Long Bunk Boards on Pontoon Boat Trailer
    In order to install the Dutton Lainson # DL21741 you will want to remove your existing bunk boards and use the DL21741 to replace them; you don't want to leave the old bunk boards on. I do recommend using the 5ft long rollers that you were looking at, since those are closer to the existing size of your bunk boards and will fit much better in that space, while providing enough support for your pontoon boat. If you want or need to replace the existing bunk brackets and bolts, you may want...
    view full answer...
  • Mounting Hardware For Thule Mountaineer
    Well, the Thule Mountaineer is discontinued but it uses U bolts to secure itself down. It would be easiest to use similar bolts because you wouldn't have to modify the box to get the cargo box secured. The U bolt that will work measures 3-3/4" x 3-1/2" overall. Is 3-1/2" wide x 3-1/8" tall internal with M7 x 1.25 threads. The part is also discontinued. but you can use the CE Smith U-Bolt # CE15283GA. A clamp like the Quick Grip # TH05738 won't work unless you're wanting to modify your...
    view full answer...
  • Recommended Replacement Bunk Brackets for Escort Bunk Trailer
    I have a solution for you, but we don't have any of the bunk brackets that are exactly the same as the ones you're replacing. Instead, you can use the CE Smith # CE10000G you were looking at to replace the bunk brackets on your current trailer. These are swiveling brackets, so the angle of the bunk boards will be able to be adjusted to match your current setup. In order to mount these bunk brackets you'll want to use U-Bolts like the CE Smith U-Bolt - Galvanized - 3-13/16" Long x 3-1/16"...
    view full answer...
    Image 1 for Image 2 for
  • Bolster Brackets and Swivel Assemblies for SeaDoo Trailer
    I can help you find the correct bolster and swivel brackets for your Seadoo trailer. The CE Smith part # CE10002G is a galvanized 13 inch bolster with a swivel bracket assembly. The swivel bracket will fit your 2 x 4 bunk great, but the brackets included have a 2-1/2 inch center spacing. We do offer a swivel bracket with a 2 inch center spacing # CE10206AA, but with either I would recommend drilling a hole in the bracket where you need it. It's important to keep in mind that its a...
    view full answer...
  • Recommended Roller Bunks For Pontoon Boat Trailer And Shallow Water
    A couple sets of the Dutton-Lainson Boat Trailer Deluxe Roller Bunk - 5' Long Sections - 12 Sets of 3 Rollers # DL21741 will drastically help with getting your pontoon boat on and off the trailer smoothly and easily as there isn't any friction compared to bunk boards. This will make it easy to get the back of your pontoon in the water while supporting the weight. You will want to make sure that you keep your winch connected and back it down if you have a large drop because the boat will...
    view full answer...
  • Recommended 10-Inch Bolster Brackets And Hardware For Boat Trailer
    We have bolster brackets with swivels and the hardware needed to install them but they are not available as a kit. For the brackets I recommend part # CE10001G-4. This includes 4 10-inch bolster brackets with the swivels. For the additional bolsters you said you need you can order part # CE10001G. These are sold individually. The hardware needed to mount the bolsters to your trailer I recommend is part # CE15283GA-4. This includes 4-U-bolts, washers and nuts. For additional U-bolts...
    view full answer...
  • Mounting the Dutton-Lainson Boat Trailer Deluxe Roller Bunk on Boat Trailer
    The Dutton-Lainson Boat Trailer Deluxe Roller Bunk # DL21741 is designed to attach directly to 2 x 4 bunk boards so it will may work for your set-up, but I recommend instead to mount the roller bunks with the Roller Bunk Bracket # DL21742 and U-Bolts # CE15283GA. This will give you roller bunks that are certain to work; you can see the simplicity of how this set up will work in the accompanying photo. I've also attached links to video reviews of these parts for you to take a look at.
    view full answer...
    Image 1 for
  • What Diameter U-Bolts Will Work With CE Smith Bolster and Swivel Bracket Assembly
    I attached a photo of the CE Smith Bolster and Swivel Bracket, part # CE10000G you can check out. As noted on the photo, the slotted holes on the bolster are 2-3/4 inches long and 1/2 inch wide. There is a distance of 1/2 inch between the slotted holes. U-bolts like part # CE15283GA are recommended for the bracket. These U-bolts measure 3-13/16 inches long, 301/16 inches between the u-bolt legs and are 1/2 inch diameter.
    view full answer...
    Image 1 for
  • Recommended Boat Brackets In 10 Inch Tall Size To Allow Proper Draining With 8 Inch Rear Set
    For you application, I recommend the CE Smith Bolster Bracket - Galvanized Steel - 10" Tall - Qty 1, # CE10101G. This is 10 inches tall and 2-1/2 inches wide. With this product you will most likely want the CE Smith U-Bolt - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 1, # CE15283GA and the CE Smith Swivel Bracket for Boat Trailers - Galvanized Steel - 2-1/2" Hole Centers - Qty 1, # CE10200G. We also have CE Smith Bolster and Swivel Bracket Assemblies - Galvanized...
    view full answer...
  • Correct Roller Bunk Bracket for Mounting Roller Bunks on Tracker Trailstar Trailer
    Based on what you are describing the Boat Trailer Roller Bunk Bracket for Dutton-Lainson Roller Bunks Parts # DL21742 will likely work. From the top of the mounting slot to the top of the bracket is approximately 2-3/4" so you should be able to get it at the 3" height you're looking for. The only potential problem is that this may vary depending on the mounting hardware used since the mounting hardware may be in contact with the swivel at varying heights depending on the size of washers/nuts/bolt...
    view full answer...
  • Recommended Roller Bunks For Tracker Deep V Boat
    You can use roller bunks like the Dutton-Lainson Boat Trailer Deluxe Roller Bunk - 5' Long Sections - 12 Sets of 3 Rollers # DL21741 instead of carpeted bunks on your 2012 Deep V Tracker boat without any marks or indentations. The roller bunks provide support as well as the ease of loading and unloading. The support will not be so focused on a single location as to leave an indent or mark. I've attached a photo to give you some dimensions. You may also want the Boat Trailer Roller Bunk...
    view full answer...
    Image 1 for
  • Can CE Smith Fender Be Mounted Without Drilling Into Boat Trailer Frame?
    The CE Smith Single Axle Trailer Fender w/ Top and Side Steps - Black Plastic - 14" Wheels - Qty 1 # CE19504 can be installed with a u-bolt around your trailer frame instead of drilling into the frame using CE Smith U-Bolt - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 1 # CE15283GA. This will require specific placement of the fender and wheel clearance for the flat side of the u-bolt, but it is possible to mount the fender in that way on your boat trailer. The strength...
    view full answer...
  • Brackets that Can be Used to Mount Wood Bunks to Boat Trailer
    You can use swivel bunks like the # DL21742 to attach the bunks with u-bolts like the part # CE15283GA to attach them to the trailer frame.
    view full answer...
  • How Long of a Bunk Roller to Use on a Boat Trailer
    There is not really a rule for the length of roller bunk needed but a good way to select this would be to match them to the length of your bunk boards. Therefore, you would want to use two sets of the Boat Trailer Deluxe Roller Bunk part # DL21740. These bunk rollers have a 2,500 lb weight capacity. If you need more than you would need to go up a size to the Boat Trailer Deluxe Roller Bunk part # DL21741 which are 5' long and have a 3,000 lb weight capacity. Don't forget the 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 you...
    view full answer...
  • 3 inch Wide U-Bolt Recommendation for Bunker Bracket
    The closest thing we have to what you are looking for would be the part # CE15283GA that has an inner width of 3-1/16 inches. The length of the U-bolt is 3-13/16 inches. The width of the U-bolt is the distance between the two posts of the bolt.
    view full answer...

Do you have a question about this Boat Trailer Part?


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Nicholas E
Installed by:
Nicholas E
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Jenny M
Updated by:
Jenny M

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