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U Bolts 4 Sets,304 Stainless Steel Square U Bolt,U Bolts 3 inch Wide,1/2' D x 3-1/16' W x 5-5/16'L U-Bolts for Boat Trailer with Nuts and Washers, for Automobiles Trailer, Ski Boat

5.0 (8) Write Review
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$33.85

$ 15 .99 $15.99

In Stock

About this item

  • U bolt size :1/2" D x 3-1/16" W x 5-5/16" L, thread length :2-1/2".u bolts 3 inch wide for 3" x 3" square beams and shafts, (please check the measurements carefully before ordering), perfect for boat trailer shop installation, trailer crane, any boat trailer
  • 304 u bolts: square u bolt is made of 304 stainless steel.u-bolts is durable and has standard upgraded thread thread to prevent freezing. ubolt fits perfectly and supports over 100LBS per bolt
  • You can get: (4) trailer U-bolts, (8) heavy hex stainless steel nylon lock nuts, (8) flat washers, (8) lock washers. stainless steel bolts and nuts kit are only half the price of the hardware store, with these you can spend less time repairing and more time boating
  • Tips: It is recommended to use lubricant during installation to prevent wear. Use a hand wrench or socket ratchet when installing the nut. Do not use a high-speed power tool or impact tool to tighten the nut.
  • After-sales service: square head bolts has been strictly inspected before leaving the factory, and provides one-year warranty service. If you have any problem, please send email to us through Amazon, and we will solve it for you within 24 hours, don't worry.


Product Description

LOGO
SIZE

(4) U-shaped bolts

01

SHIP VEHICLES

02

CONSTRUCTION INSTALL

03

BRIDGE TUNNEL

05

MACHINERY PARTS

ENDING

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Any misssing parts,Refund or Replacement for any quality problem.

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Fredrick Kaval
2025-08-21 19:15:16
Good marine grade materials, for my boat trailer!
Carol Gross
2025-08-16 16:08:15
Needed to raise the height of our boat trailer. These are perfect to work with the new heavier duty springs.
Neil A Schaffner
2025-06-14 12:57:02
Quality was good, as expected.
crush-it
2025-05-31 14:48:21
JUNK! The threads on the bolts are wrong. The nuts thread on great for about an inch then bind up so severely that I couldn't get them off with a breaker bar and had to use a cutter. I repeated it with oil on the threads with the same result. Very disappointed. I sent back the fragments for a refund. NOTE: I have seen this same phenomena years ago with an unknown manufacturer. This is not a function of the Nylon and it is not user error. These were not cross threaded. If you only have to screw it on an inch you may be fine.
Esteban
2025-05-23 15:45:15
Decent quality, not perfect, but good enough. Was missing hardware when I received it, reached out to seller and they sent out the missing stuff.
Guy W. Seamster
2025-03-06 12:05:31
Was hard finding ones that were long enough. Lot of these on here are too short. My application was just a trailer which is standard bars on about all of them. But all the other U bolts I found were way too short. I would have to see them used to know where they would be used. Better buy too long and cut off or just leave them long as not to mess up the threads.
masonj
2025-03-04 15:57:05
Good quality, fair price and fast delivery. This would have gotten five stars if all the pieces were there.Instead of 8 fender washers, lock washers and stop nuts, I received 9 lock washers, 13 fender washers and only 4 stop nuts. I had 2 of the U-bolts already installed before I noticed it so I had to make a trip to the hardware store and spend another $8.00 for 4 more stop nuts. Buyer beware.
Mike
2025-02-07 16:46:22
Easy install