Square U-Bolts 1" + diameter - Grade 8

To Purchase Grade 8 Square U-Bolts

The chart below provides quick reference to the 1" diameter and larger square u-bolts we have in stock. Each kit contains:

Round U-Bolt Kit
  • 2 u-bolts
  • 4 washers
  • 4 nuts

Once you find the u-bolt that meets your requirements, click on the 'buy' link to add the u-bolt kit to your cart, and review pricing. On the cart page, specify the number of KITS you would like to purchase, and checkout.

How to Measure a Square U-Bolt

How to Measure U-bolts

  • Determine the type of bend (round, semi-round, or square)
  • Measure the diameter of the Rod ("A")
  • Measure the distance between the Legs ("B")
  • Measure the length of the leg ("C")

In the chart below, Part #8-1620K is 1" diameter x 5-9/16" wide x 11-5/8" long.

Grade 8 Common Square U-Bolts - 1" diameter and larger
      Corner Rod   Click for
Part # Dimension Bend Radius Length Application Price
8-1620K 1 x 5-9/16 x 11-5/8 Square 0.500 30 Reyco Buy
8-1622K 1 x 5-9/16 x 13-5/8 Square 0.500 34 Reyco Buy
 
8-1824K 1-1/8 x 5-1/8 x 13-1/2 Square 0.875 33 Hutch Buy
8-1826K 1-1/8 x 5-1/8 x 15-1/2 Square 0.875 37 Hutch Buy
 
8-1828K 1-1/8 x 5-3/4 x 11-5/8 Square 0.875 30 Neway Buy
8-1830K 1-1/8 x 5-3/4 x 12-5/8 Square 0.875 32 Neway Buy
8-1832K 1-1/8 x 5-3/4 x 13-5/8 Square 0.875 34 Neway Buy
8-1834K 1-1/8 x 5-3/4 x 14-5/8 Square 0.875 36 Neway Buy
 
8-2010K 1-1/4 x 4-1/16 x 13-1/4 Square 0.625 32 Mack Buy
8-2012K 1-1/4 x 4-1/16 x 14-1/4 Square 0.625 34 Mack Buy
8-2014K 1-1/4 x 4-1/16 x 15-1/4 Square 0.625 36 Mack Buy
8-2016K 1-1/4 x 4-1/16 x 16-1/4 Square 0.625 38 Mack Buy
8-2018K 1-1/4 x 4-1/16 x 17-1/4 Square 0.625 40 Mack Buy
8-2020K 1-1/4 x 4-1/16 x 18-1/4 Square 0.625 42 Mack Buy
8-2022K 1-1/4 x 4-1/16 x 19-1/4 Square 0.625 44 Mack Buy

Need Custom Bent U-bolts?

Call 1-800-358-4751 for expert advice on U-Bolts. Or send us an email. We're open (Eastern Time Zone):
  • M-F: 7am - Midnight
  • Sat: 8am - 1pm
Secure online ordering is available 24 hours a day, 7 days a week.

Threaded Rod & U-bolt Links

About U-Bolts

U-Bolts on many suspensions provide the force necessary to create what is called the center clamp. This provides the permanent tie between not only the spring leaves, but between the spring and spring seat as well. The clamp performs the following functions:
  • Attach the spring firmly to the axle seat
  • Prevent leaf breakage through the center bolt section
  • Prevent center bolt breakage due to shear

U-Bolt Q&A

Q.  If I'm replacing a spring, can I re-use the old u-bolts?

A.  No, you should never re-use u-bolts. A properly installed U-Bolt stretches a little bit under torque. The results of this small amount of stretching and its effects on the U-Bolt threads and deep nut, lower a used U-Bolt's ability to sustain the required clamping torque.

Q.  Is torque important when I tighten u-bolts?

A.  You bet it is. The following are a list of common problems resulting from improperly torqued u-bolts:
  • looseness in seat area
  • excessive wear on chassis components
  • possible spring breakage
  • possible axle slippage and misalignment