Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles - 9/16" Diameter

Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles - 9/16" Diameter

Item # 175130

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Our Price: $10.33

Trailer Leaf Spring Suspension

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Shipping Weight: 0.87 lbs

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Redline Axle Mounting Hardware - 175130
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  • U-Bolts
  • Axle Mounting Hardware
  • Square Axle - 1-3/4 Inch
  • 5 Inch Long
  • 2000 lbs
  • 9/16 Inch Diameter
  • Redline
5" Long U-bolt, in conjunction with a U-bolt plate and an additional U-bolt, attaches your square, 1-3/4" wide axle to your leaf springs. Lowest Prices for the best trailer leaf spring suspension from Redline. Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles - 9/16" Diameter part number 175130 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (55)
  • Q & A (11)
  • Videos (1)
  • Photos
  • Why etrailer?

Redline Trailer Leaf Spring Suspension - 175130

5" Long U-bolt, in conjunction with a U-bolt plate and an additional U-bolt, attaches your square, 1-3/4" wide axle to your leaf springs.


Features:

  • Used with U-bolt plate to secure axle to leaf springs, which are mounted to the trailer frame
  • Attaches with a U-bolt plate (sold separately) and an additional U-bolt with same dimensions (sold separately)
  • Each side of U-bolt is threaded from 2-1/8" to end
  • Fits square, 1-3/4" wide trailer axles
  • Includes 2 nuts


Specs:

  • Bolt diameter: 9/16"
  • Length: 5"
  • Width: 1-3/4"


U-Bolt Diagram



175130 U-Bolt for 1-3/4" Wide Square Trailer Axles





Video of Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles - 9/16" Diameter


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Redline Trailer Suspension 175130 Review

Today, we'll be reviewing part number 175130. This is Redline's Replacement U-bolt, with the included nuts for 1 3/4 inch wide square trailer axles. This is used with U-bolt plates to secure the axle to the leaf springs, which are mounted to the trailer frame. It's going to attach with a U-bolt plate, which is sold separately, and an additional U-bolt with the same dimensions, which is also sold separately. Each side of the U-bolt is threaded. If we take a measurement of the beginning of the threaded portion to the bottom of the bolt, it's going to give us a measurement of 2 1/8 of an inch. This is designed to fit square 1 3/4 inch wide trailer axles and again, it's going to include both nuts. If we take a measurement of the bolt diameter, that's going to give us a measurement of 9/16 of an inch.

The length that we have from the bottom of the crossbar, to the bottom of the U-bolt, is going to measure 5 inches. The width that we have between the two U-bolt posts is going to measure 1 3/4 of an inch. That's going to do it for our review of part number 175130. This is Redline's Replacement U-bolt with the included nuts. .


Customer Reviews

Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles - 9/16" Diameter - 175130

Average Customer Rating:  4.9 out of 5 stars   (55 Customer Reviews)

5" Long U-bolt, in conjunction with a U-bolt plate and an additional U-bolt, attaches your square, 1-3/4" wide axle to your leaf springs.

- 175130
by:

Worked as planned. 708040



- 175130
by:

Items were good quality and arrived on time. 681116



- 175130
by:

Great service! Great product! 628596



- 175130
by:

Great product, fit perfect, well made. 594719



- 175130
by:

Great bolts! Great customer service! 527591



- 175130
by:

Good product and fast delivery 526295



- 175130
by:

I actually used the bolts for my safety chains for my gooseneck trailer. 519105



- 175130
by:

Products are as advertised and of excellent quality. Prompt shipping and professional. No fuss, no muss... what more could I ask for! 501222


Comments

Still on my boat trailer no issues!

Christian - 04/27/2019

54559

- 175130
by:

Good quality! 440503



- 175130
by:

I got this u-bolt to replace a factory u-bolt while rebuilding my trailer. It fit just fine and came with locking nuts. The threads were a little uneven on length, but it wasn't an issue. (Probably only an 1/8") 395730



- 175130
by:

Good quality bolts but would have liked a torque spec. for them. 380328



- 175130
by:

They seem to be high quality replacement bolts. They fit perfectly. I have not had the trailer down the road yet but at least its back together. 357755


Comments

The trailer hasnt fallen apart in the last year so I guess theyre doing their job. Id buy again if necessary.

Jason W - 03/23/2018

36328

- 175130
by:

Thanks for asking. I was very pleased with your products and service. I built my trailer suspension with the measurements and technical info from your web sight. Everything bolted right up. I finished the trailer on Friday afternoon, loaded it up Friday night, and pulled it half way across the country on Saturday and Sunday. You will be the first place I look when I need trailer parts! * 355687



- 175130
by:

happy 348889



- 175130
by:

These bolts held up to my plowing, the others did not, I was satisfied. 347865



- 175130
by:

Great product great company. 346685



- 175130
by:

EXACTLY what I needed for my double axle rebuild: 9/16" X 5" long with 18threads/inch plus nuts 333826



- 175130
by:

We were very happy with your friendly and efficient service. We like the wide variety of the products you carry. 336867



- 175130
by:

Works fine. 322553


Comments

Everything is still working fine.

Larry E - 12/09/2017

31558

- 175130
by:

Excellent service 323697



- 175130
by:

Received what I was looking for 320385



- 175130
by:

Had a hard time finding the u bolts until I found etrailer.com. They had exactly what I was looking for. The quality of the u bolts, nuts and the spring plates I purchased from them was great. Much better than all the wrong sized ones that I could locate locally. I would definitely buy from them again. Their communication was good as well. 315923



- 175130
by:

U-Bolt supplied by etrailer was exactly what I needed for my utility trailer which was mounted on a model T Ford pickup chasse. 308271



- 175130
by:

I was given a delivery date upon completing my order and wasn't expecting delivery so soon. The package arrived almost a week in advance and everything was as ordered. Great quality too. Thanks for great service. 308773



- 175130
by:

The trailer with your updates operates and looks like a new one... 298170



- 175130
by:

The product came exactly as described, fast shipping, I was very pleased with service! 295288



- 175130
by:

Awesome price fast shipping 284020



- 175130
by:

the hanger worked perfectly, it didn't have any washers, but I had some, I also painted the axle and all the parts with the new hammer paint, the axle looks like new. the leaf is excellent, everything fit perfectly' it's a flat steel trailer with truck tires and I use it for hauling heavy equipment. 276223



- 175130
by:

Product was as described and shipped qu ickly 274170



- 175130
by:

Quick delivery and excellent customer service (with follow-up emails to ensure that everything was ok with the order). This replaced a broken bolt on a 1956 camper trailer, and it's a very close match to the original. 273794



- 175130
by:

5 stars ordered for a project and got just what I expected and fast delivery. 251791



- 175130
by:

Parts worked great. wish were sold in kit. paid more buying separately. 241732



- 175130
by:

I was having a hard time finding a specific size U bolt for a boat trailer. After a couple of disappointments from other vendors, I ordered the needed parts from etrailer.com. The sales staff was extremely helpful and the product arrived in a timely manner. The quality of the product was even better quality than I had anticipated and was perfect for the repair. I will definitely go to etrailer.com. first next time to save myself the aggravation.....great group. 230440



- 175130
by:

Excellent product Perfect fit for my trailer rebuild. 229568



- 175130
by:

Ellen was great to deal with and my parts shipped the same day! Will definitely buy from these folks again. 227971



- 175130
by:

Size and dimensions were spot on! exactly what I needed to continue work on my trailer! Also shipping was fast! look forward to doing more business through etrailer! 226181



- 175130
by:

This product was a perfect fit, and excellent quality. Also, customer service was excellent. Sorry, I won't have photos for awhile. 194692



- 175130
by:

Added this u bolt to get over the limit for free shipping, was impressed with the quality and thickness of it. 176533



- 175130
by:

I searched through many sites to get these square bolts and plates for a square 1-3/4" axle. Must be a fairly rare axle. Nobody had them until I got to etrailer.com. Thanks! 167974



- 175130
by:

This u-bolt was the correct length to finish off my axle project. Very beefy 166634



- 175130
by:

Fast service and product was perfect fi t. 140106



- 175130
by:

These U-bolts are exactly what I was looking for, and they cost less than I could find them anywhere else. The quality is excellent, and they were delivered in a very timely manner. I highly recommend e trailer.com to anyone that needs the products they offer. 131999



- 175130
by:

I always know my orders from etrailer arrive quickly and accurate. There product is the very best. 126768



- 175130
by:

These products were great. I looked all over for this particular size, and this is the only place I could find them. The only downside is that the items did not come with washers or lock washers. 110819



- 175130
by:

These fit perfect around 1-3/4" leaf springs. You will likely need 4... Two on each side. 100845



- 175130
by:

The U Bolts were just what I needed and the fit was perfect..Really your company was the only place I could find these U bolts..Many thanks,,, 79483



- 175130
by:

was exactly what we needed to replace all the worn ones.thanks 68572



- 175130
by:

Quick service. Quality merchandise. 56908



- 175130
by:

Great product, these are for my hot rod. GOOD 1 3/4" u-bolts are impossible to find. Thanks! 49706



- 175130
by:

Products appear all heavy duty, well machined, and fit properly. Just what I needed, easy installation. The install videos can be/ were helpful. 49688


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Show More Reviews

Ask the Experts about this Redline Trailer Leaf Spring Suspension

Do you have a question about this Trailer Leaf Spring Suspension?


  • U-Bolts for 1-3/4 Inch Square Axle
  • For a square axle that is 1.75" wide, you would want the Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles # 175130 along with the U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs # 116308. I have added links to video reviews of both products for you.
    view full answer...

  • Switching From Slipper Springs to Double-Eye on a Single 2K Axle Trailer with Square Axle
  • To switch to double-eye spring suspension I recommend getting parts individually since the u-bolts cannot be swapped out of kits. The spring in the kit is # SP-169275. We have a few different u-bolt kits for square axles including # CE23102 for 1-1/2 inch square axles. For a 1-3/4 inch square axles you can use u-bolt # 175130 and plate # 116308. And for 2 inch square axles we have # CE23103. You will also need a new hanger kit since double-eye springs use different hangers than slipper...
    view full answer...

  • Can Round Trailer Axle be Replaced with Square Trailer Axle
  • Yes, you can replace a trailer's round axle with a square axle as long as the weight capacity is appropriate. You will need a new U-bolt kit to connect the axle: 1-1/2 inch square axles # CE23102 1-3/4 inch square axles # 175130 for the U-Bolts and # 116308 for the plate 2 inch square axles # CE23103
    view full answer...

  • Replacing Slipper Springs on Magic Tilt B16W Boat Trailer
  • The best way to determine the length of the slipper spring you will need for your trailer is to measure the spacing, center to center, of the spring hangers. If this spacing is approximatley 23 inches, we have a couple of springs that can work well for you. If your spacing is different, feel free to let me know and I will see if we have a spring that will work for you. If your spring hanger spacing is 23 inches, a great replacement slipper spring is the SP-179275 4-Leaf Slipper Spring,...
    view full answer...

  • Will a Leaf Spring Work on a 2 Horse Trailer With a Slant Ramp
  • You were right on the money thinking that the Redline 4-Leaf Double-Eye Spring # SP-212275 should work with your slant ramp on your 1989 Aluminum Classic Trailer. Through some research, I was able to find out that Redline supplies many of the ramp springs to horse trailer manufacturers. The key point to make sure these are the correct ones is to measure the ones you currently have - I realize they are broken, but, do the best you can. You need to measure from center of one eye to the...
    view full answer...

  • Replacing Inverted Leaf Spring Suspension on Old Utility Trailer
  • The first thing you will want to do is to remove the current springs from the frame and the axle. You can still use your axle if it is in good working order, but you will also want to remove any hardware welded to the axle. To install leaf springs, you will first want a hanger kit. For your single axle trailer, I recommend Redline's Single-Axle Trailer Hanger Kit for Double-Eye Springs # APS1. This hanger kit will have a 1-1/2 inch drop for the front hanger, and a 7/8 inch drop for...
    view full answer...

  • What is the Thread Length on the Replacement U-Bolt, # 175130
  • I went out to the warehouse and measured a Replacement U-Bolt, # 175130, and the threaded part was 2-1/8 inches long.
    view full answer...

  • Can Unique Leaf Springs be Replaced on a Very Old Trailer
  • I believe the hubs are for 2,000 or 2,200 pound agricultural axles which is why the springs look so different. These hubs are designed for very low speed applications (5 to 10 miles per hour according to HADCO) so if you plan on going faster than that you will need to look at replacing the axle and hubs. You could use 2 of spring # SP-219275. Each spring has a capacity of 1,250 pounds. If a new hanger kit is needed you can use # APS1. When used with spring SP-219275 the center to center...
    view full answer...

  • Bolt Hole to Bolt Hole Measurements for 2,000 lb Coupler for 2 Channel and 1-7/8 Hitch Ball
  • I took a look at each of the 2,000 lb trailer couplers that fit a 2" channel and connect to a 1-7/8" hitch ball, and none of them have bolt hole to bolt hole measurements of 1-1/4". The Fulton Fas-Lok Coupler # E112000340 and Channel Tongue Trailer Coupler # CT-2001-Z both have 2-1/4" on center measurements and the Dutton-Lainson Coupler # DL23870 measures 2-1/2" from bolt hole to bolt hole. The 1-1/4" bolt hole to bolt hole measurement you have is going to be too small for any of the...
    view full answer...

  • What Drill Bit Size to Use to Install Redline Replacement Trailer Axle U-Bolt with Nuts # 175130
  • Since the diameter size of the posts on this u-bolt is 9/16-inch you can ideally use a 9/16-inch or 5/8-inch bit (or even a 1/2-inch bit if you have the room to move the drill around enough to ream the hole to the required size). In either case you will want to ensure that the bits you are using are intended for drilling in the material on your trailer. Please refer to the photo provided which shows the dimensions of this item. Often it is easier to start a smaller-diameter pilot hole,...
    view full answer...

  • Is Redline Replacement Trailer Axle U-Bolt # 175130 Galvanized or Zinc Plated
  • The Redline U-bolt you referenced, part # 175130 is constructed of raw steel that has been lightly oiled to prevent corrosion during storage. It is not Galvanized or zinc plated.
    view full answer...


Do you have a question about this Trailer Leaf Spring Suspension?




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Info for this part was:

Expert Research:
Michael L
Expert Research:
Michael H
Expert Research:
Adam R
Video by:
Kathleen M
Installed by:
Cole B

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