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Home>Categories>Boat Trailer Mounting Hardware>Boat Trailer U-Bolts > Stainless Steel U-Bolt 1/2 inch x 3 inch x 4 5/16 inch Trailer U-Bolt

Stainless Steel U-Bolt 1/2 inch x 3 inch x 4 5/16 inch Trailer U-Bolt

 
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18 Review(s)
18
5
0
5
Stainless Steel U-Bolt 1/2 inch x 3 inch x 4 5/16 inch Trailer U-Bolt
Price: $6.87
In Stock

Stainless Steel U-bolt measuring 1/2 inch x 3 1/16 inch x 4 5/16 inch, Used to hold on various brackets on boat and utility trailers.  Includes Stainless Steel nuts, Locking washers, and flat washers. 

Specs:

Finish: Stainless Steel

Thread Size:  1/2-13

Inside Width: 3 1/16 inch

Inside Length: 4 5/16 inch

This U-Bolt size is the most commonly used boat trailer U-Bolt. The most common tubing that this U-Bolt would mount around would be 3" x 3" tubing. For example, using this U-Bolt with the Galvanized Vertical Bunk Brackets L Type or Swivel Top Boat Trailer Bunk Brackets would allow you to mount your bunk brackets to your trailers cross-member. In addition, this size U-Bolt would mount your Boat Trailer front V-Guide or Galvanized Boat Trailer Roller Brackets to your trailers cross-members. 

Using this Stainless Steel U-bolt is ideal for aluminum trailer parts like cross members and Aluminum Vertical Bunk Brackets L Type. 

5 Stars
Stainless u bolt
Fit perfect on trailer crossbeam to support bunk bracket. excellent quality.
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from Manchester, nh. on 8/24/2017
5
5 Stars
High Qual, Fast Ship
Looks to be very good, much better than galvanized that were very rusted on my trailer. Shipping was very quick and well packaged.
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Reviewed by:  from Seatac, Wa. on 11/11/2021
5
5 Stars
com fisherman ..ironworker welder
stainless steel for the price of steel ..local marine supply store's didn't have anything like this should have replaced more than i did
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Reviewed by:  from Warwick. on 9/15/2021
5
5 Stars
Mr
Though I have not yet installed my rebuilt trailer bunks using these U-Bolts, they appear fine. In addition, these were the best price I could find I could find for the SS U-Bolts (plus connection HW) on the internet. BoatTrailerParts also was very prompt in their shipping. I will be checking with this vendor for all future parts I may need.
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Reviewed by:  from Panhandle, FL. on 7/24/2021
5
5 Stars
Great Parts
Excellent quality parts and fast shipping. Customer service is also easy to work with. My trailer is looking new again.
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Reviewed by:  from NC. on 6/4/2021
5
5 Stars
Customer
I got these to mount a winch seat to a winch post, ultimately to be used for a winch setup on a raft trailer. These were fine, fit perfect, got here fast.
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Reviewed by:  from Butte, MT. on 7/26/2020
5
5 Stars
mr
absolutely wonderful product,and super fast shipping,there is nothing better than high grade stainlesss steel.
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Reviewed by:  from fayetteville. on 2/17/2020
5
5 Stars
Mr.
Great quality, fast shipping . Will buy again once the main bunks are ready.
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Reviewed by:  from Southeast. on 2/7/2017
5
5 Stars
Mr.
Great product as shown and incredibly fast shipping, thank you.
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Reviewed by:  from Valdosta, Ga. on 8/31/2016
5
5 Stars
Retired Chemical Production Manager
I have used BTP four times to purchase replacement parts for my boat trailer that needed replacement or upgrades after 15 years of use. Trailer now looks brand new and I have the confidence to go anywhere. Each time I have used BTP, the sale reps have been knowledgeable of products and very professional to deal with. Products were delivered as promised and were always of the highest quality. I would strongly recommend using BTP if you have trailer maintenance needs.
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Reviewed by:  from Central, SC. on 4/26/2016
5
5 Stars
Mr.
Part delivered within three days of ordering. Exactly as advertised and good quality. Thanks, BTP
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Reviewed by:  from Litchfield, Ohio. on 11/24/2015
5
5 Stars
Retired Maintenance Supervisor GM, now RN
All parts were shipped fast and look great. Have not had the time to take apart the trailer to repair, but will soon.
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Reviewed by:  from Naples, FL. on 8/23/2015
5
5 Stars
Stainless Steel U-Bolt
Nice product, good fit and seem to work nicely.
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Reviewed by:  from Madison, WI. on 7/1/2015
5
5 Stars
Stainless Steel U-Bolts
These guys are awsome. Fast and properly protected shipping. Higly recommended
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Reviewed by:  from Tallahassee. on 3/17/2015
5
5 Stars
Stainless steel square u-bolts
These square stainless steel u-bolt and nuts are perfect for my application. You get the best of both world's, no rust and strength. U-bolts by their very nature tend to rust at contact points but not these babies. Stainless steel u-bolts may cost a little more but in the long run your better off. Good valve for the money!
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Reviewed by:  from Kerrville, TX. on 12/1/2014
5
5 Stars
Sr Program Manager
Parts arrived pretty quickly, were the correct quantities and were good quality. They fit great and as most know, removing the old parts was the worst part of my trailer rebuild.
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Reviewed by:  from Sneads Ferry, NC. on 7/23/2013
5
5 Stars
Scott
awesome pricing, fit and shipping. these guys are my trailer supplier forever!!! they have everything
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Reviewed by:  from Sebastian. on 11/2/2012
5
5 Stars
boatowner
everything BoatTrailerParts.com sells is top shelf quality.the ss u bolts fit perfect into prebored holes of bunk brackets no bending or struggling. i have bought many trailer parts from them and never do i have a problem.simply the only source dor trailer parts.
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Reviewed by:  from new york. on 9/24/2012
5

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