1. Trailer Leaf Spring Suspension
  2. Redline
  3. U-Bolts
  4. Axle Mounting Hardware
  5. Square Axle - 1-3/4 Inch
  6. 5 Inch Long
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
lowest price pledge
Our Price: $9.13
Trailer Leaf Spring Suspension
Orders above $50 qualify for Free Shipping
Shipping Weight: 0.87 lbs
Quantity: 
In Stock
Redline Axle Mounting Hardware - 175130
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

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 (60)
  • Q & A (12)
  • Videos (1)
  • Photos
  • Why etrailer?

Redline Trailer Leaf Spring Suspension - 175130

  • 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.


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   (60 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:

Your the best team ever this bolts worked great thanks 867288



- 175130
by: 08/14/2020

861696



- 175130
by:

I replaced the suspension on an older horse trailer every thing was worn out.with this kit I was able to relocate the axles . With the help from etrailer my project went without a hitch everything was exactly what I needed . thank you very much 769970



- 175130
by:

Exactly what I need and they arrived qu ickly! 766728



- 175130
by:

perfect fit, excellent quality,very ple ased 735964



- 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


25
60
Show More Reviews

Ask the Experts about this Redline 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...
  • Lift Kit Adding 2" For 1-3/4" Square Axle 5x8 Trailer.
    With square axles, neither of our over/under kits will be a fit to raise the height of the trailer so another option is to use longer hangers for the leaf springs. You will just want to confirm the hangar height. You may be able to use a hanger like part # E4139. This hanger is designed for double-eye springs and is 4-1/4 inches tall. The old hangers will need to be cut off and the replacement hangers welded on by a professional.
    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...
  • 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...
  • 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...
  • 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 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...
  • 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...
  • 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...
  • 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...
  • 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...




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer leaf spring suspension for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer leaf spring suspension information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

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

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.


Product Experts Available Now!
Call 800-298-8924