TRUCK & TRAILER PARTS, U-Bolts

We Have a Very Large Selection of U-Bolts in Stock in All Sizes for All Applications, Including Square U Bolts, Zinc Plated, Stainless Steel and Galvanized U-Bolts.

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The following discounts apply to all these products.

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5/8" x 9-1/2" x 5" U-bolt 10k Hayes

List Price: $12.19

Price$12.83

5/8" x 9-1/2" x 5" U-bolt 10k Hayes

Product ID 091148LN

This 5/8" x 9-1/2" x 5" U-bolt, 10k Hayes typically attaches your round, 10,000-lb Hayes axle to your leaf springs.

List Price: $12.19

Price$12.83

5/8" x 4" x 8-1/8" Round U-bolt

List Price: $6.73

Price$7.09

5/8" x 4" x 8-1/8" Round U-bolt

Product ID 11-64LN

This 5/8" x 4" x 8-1/8" Round U-bolt is typically used for axles with a 4" diameter, these are usually 9,000lb axles, sold per each.

List Price: $6.73

Price$7.09

3/4" x 5" x 9-5/8" Round U-bolt

List Price: $13.93

Price$14.66

3/4" x 5" x 9-5/8" Round U-bolt

Product ID 11-70LN

This 3/4" x 5" x 9-5/8" Round U-bolt is typically used for axles with a 5" diameter, 12-15k axles, measures 5" wide from inside to inside.

List Price: $13.93

Price$14.66

5/8" x 5" x 8-7/8" Round U-Bolt

List Price: $6.88

Price$7.24

5/8" x 5" x 8-7/8" Round U-Bolt

Product ID 11-77LN

This 5/8" x 5" x 8-7/8" Round U-Bolt is typically used for 10k axles with a 5" diameter, measures 5" wide from inside to inside.

List Price: $6.88

Price$7.24

Galvanized U-Bolt Plate for 1-3/4" Axles

List Price: $7.57

Price$7.97

Galvanized U-Bolt Plate for 1-3/4" Axles

Product ID 117535-G

This Galvanized U-Bolt Plate for 1-3/4" Axles is used to attach your springs to the axle, 1 3/4" Springs and 1-3/4" Axles.

List Price: $7.57

Price$7.97

Galvanized U-Bolt Plate for 1-3/4" - 2" Square Axles

List Price: $13.28

Price$13.98

Galvanized U-Bolt Plate for 1-3/4" - 2" Square Axles

Product ID 117594-G

This Galvanized U-Bolt Plate for 1-3/4" - 2" Square Axles is used to attach your springs to the axle, uses 9/16" Diameter U-bolts.

List Price: $13.28

Price$13.98

Galvanized U-Bolt Plate for 2-3/8" Round Axles

List Price: $10.48

Price$11.03

Galvanized U-Bolt Plate for 2-3/8" Round Axles

Product ID 117595-G

This Galvanized U-Bolt Plate for 2-3/8" Round Axles is used to attach your springs to the axle, 1 3/4" Springs, 2-3/8" Round Axles.

List Price: $10.48

Price$11.03

Redline 1/2" x 2-1/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washers

List Price: $13.56

Price$14.28

Redline 1/2" x 2-1/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washers

Product ID 122185UB

This Redline 1/2" x 2-1/8" x 5-1/4" Square Zinc U-bolts, Nuts and Washers are zinc plated to resist corrosion, 2-1/8" from inside to inside.

List Price: $13.56

Price$14.28

9/16" x 3-1/2" x 9" Round U-bolt

List Price: $8.57

Price$9.03

9/16" x 3-1/2" x 9" Round U-bolt

Product ID 175666LN

This 9/16" x 3-1/2" x 9" Round U-bolt is for 3-1/2" round tube axles with 10 leaf springs, usually 8,000lb axles, 9/16"-18 rod diameter.

List Price: $8.57

Price$9.03

9/16" x 2-1/2" x 7-3/4" Round U-bolt

List Price: $5.73

Price$6.03

9/16" x 2-1/2" x 7-3/4" Round U-bolt

Product ID 175668LN

This 9/16" x 2-1/2" x 7-3/4" Round U-bolt for 2-1/2" round tube 7.5k solid bar axles measures 2-1/2" wide from inside to inside.

List Price: $5.73

Price$6.03

1/2" x 2-3/8" Galvanized Round U-bolt

List Price: $4.39

Price$4.62

1/2" x 2-3/8" Galvanized Round U-bolt

Product ID 176400LN-G

This 1/2" x 2-3/8" Galvanized Round U-bolt is galvanized for corrosion resistance and has 13 threads per inch.

List Price: $4.39

Price$4.62

Redline 3/8" x 1-3/4" x 4" Square Zinc U-bolts, Nuts & Washers

List Price: $11.45

Price$12.06

Redline 3/8" x 1-3/4" x 4" Square Zinc U-bolts, Nuts & Washers

Product ID 381344UB

These Redline 3/8" x 1-3/4" x 4" Square Zinc U-bolts, Nuts and Washers can be used to attach a square tube axle to the trailer frame.

List Price: $11.45

Price$12.06

Redline 3/8" x 2-1/4" x 4-1/4" Square Zinc U-bolts, Nuts & Washers

List Price: $13.28

Price$13.98

Redline 3/8" x 2-1/4" x 4-1/4" Square Zinc U-bolts, Nuts & Washers

Product ID 382144UB

These Redline 3/8" x 2-1/4" x 4-1/4" Square Zinc U-bolts, Nuts and Washers can be used to attach a square tube axle to the trailer frame.

List Price: $13.28

Price$13.98

Redline 3/8" x 2-3/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washer

List Price: $13.35

Price$14.06

Redline 3/8" x 2-3/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washer

Product ID 382385UB

These Redline 3/8" x 2-3/8" x 5-1/4" Square Zinc U-bolts, Nuts and Washers can be used to attach a square tube axle to the trailer frame.

List Price: $13.35

Price$14.06

Redline 7/16" x 2-1/8" x 4" Square Zinc U-bolts, Nuts & Washers

List Price: $14.57

Price$15.34

Redline 7/16" x 2-1/8" x 4" Square Zinc U-bolts, Nuts & Washers

Product ID 7162184UB

These Redline 7/16" x 2-1/8" x 4" Square Zinc U-bolts, Nuts and Washers measure 2-1/8" from inside to inside and are zinc coated.

List Price: $14.57

Price$15.34

1/2" x 2-3/8" x 5-1/2" U-bolt Kit

List Price: $23.45

Price$24.69

1/2" x 2-3/8" x 5-1/2" U-bolt Kit

Product ID APUBR-1

This 1/2" x 2-3/8" x 5-1/2" U-bolt Kit has everything you need to mount your trailer's leaf springs to a 2-3/8" round axle.

List Price: $23.45

Price$24.69

3/8" x 1-3/4" x 4-1/4" U-bolt Kit

List Price: $21.45

Price$22.58

3/8" x 1-3/4" x 4-1/4" U-bolt Kit

Product ID APUBR-10

This 3/8" x 1-3/4" x 4-1/4" U-bolt Kit has everything you need to mount your trailer's leaf springs to a 1-3/4" round axle.

List Price: $21.45

Price$22.58

1/2" x 3" x 7" U-bolt Kit

List Price: $29.23

Price$30.77

1/2" x 3" x 7" U-bolt Kit

Product ID APUBR-8

This 1/2" x 3" x 7" U-bolt Kit has everything that you need to mount your trailer's leaf springs to a 3" round axle.

List Price: $29.23

Price$30.77

9/16" x 3" x 7-1/4" U-bolt Kit

List Price: $50.74

Price$53.41

9/16" x 3" x 7-1/4" U-bolt Kit

Product ID APUBR-9

This 9/16" x 3" x 7-1/4" U-bolt Kit has everything you need to mount your trailer's leaf springs to a 3" round axle.

List Price: $50.74

Price$53.41

Redline 1/2" x 2-1/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washers

List Price: $15.37

Price$16.18

Redline 1/2" x 2-1/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washers

Product ID HW04-010

This Redline 1/2" x 2-1/8" x 5-1/4" Square Zinc U-bolts, Nuts & Washers are Zinc plated to resist corrosion, it includes 2 U-bolts, 4 nuts and 4 washers.

List Price: $15.37

Price$16.18

Redline 3/8" x 1-3/4" x 4" Square Zinc U-bolts, Nuts & Washers

List Price: $13.25

Price$13.94

Redline 3/8" x 1-3/4" x 4" Square Zinc U-bolts, Nuts & Washers

Product ID HW04-030

These Redline 3/8" x 1-3/4" x 4" Square Zinc U-bolts, Nuts and Washers have a variety of use. They can also be used on your boat trailer to secure bunks.

List Price: $13.25

Price$13.94

Redline 3/8" x 2-1/4" x 4-1/4" Square Zinc U-Bolt, Nuts & Washers

List Price: $14.98

Price$15.77

Redline 3/8" x 2-1/4" x 4-1/4" Square Zinc U-Bolt, Nuts & Washers

Product ID HW04-035

These Redline 3/8" x 2-1/4" x 4-1/4" Square Zinc U-Bolt, Nuts and Washers are used for a variety of applications, such as your boat trailer to secure bunks.

List Price: $14.98

Price$15.77

Redline 3/8" x 2-3/8" x 5-1/4" Square Zinc U-Bolts, Nuts & Washers

List Price: $14.45

Price$15.21

Redline 3/8" x 2-3/8" x 5-1/4" Square Zinc U-Bolts, Nuts & Washers

Product ID HW04-040

These Redline 3/8" x 2-3/8" x 5-1/4" Square Zinc U-Bolts, Nuts & Washers are used for a variety of applications, such as on your boat trailer to secure bunks.

List Price: $14.45

Price$15.21

Redline 3/8" x 3-3/8" x 4-1/4" Square Zinc U-Bolts, Nuts & Washers

List Price: $13.97

Price$14.71

Redline 3/8" x 3-3/8" x 4-1/4" Square Zinc U-Bolts, Nuts & Washers

Product ID HW04-045

These Redline 3/8" x 3-3/8" x 4-1/4" Square Zinc U-Bolt, Nuts and Washers are used for a variety of applications, such as your boat trailer to secure bunks

List Price: $13.97

Price$14.71

Redline 7/16" x 2-1/8" x 4" Square Zinc U-Bolts, Nuts & Washers

List Price: $16.50

Price$17.37

Redline 7/16" x 2-1/8" x 4" Square Zinc U-Bolts, Nuts & Washers

Product ID HW04-050

These Redline 7/16" x 2-1/8" x 4" Square Zinc U-Bolt, Nuts and Washers are used for a variety of applications, such as your boat trailer to secure bunks.

List Price: $16.50

Price$17.37

Redline 7/16" x 3-1/8" x 3" Square Zinc U-Bolts, Nuts & Washers

List Price: $16.09

Price$16.94

Redline 7/16" x 3-1/8" x 3" Square Zinc U-Bolts, Nuts & Washers

Product ID HW04-055

These Redline 7/16" x 3-1/8" x 3" Square Zinc U-Bolt, Nuts and Washers are used for a variety of applications, such as your boat trailer to secure bunks.

List Price: $16.09

Price$16.94

Redline 3/8" x 1-3/4" x 4-1/4" Round U-bolts & Nuts

List Price: $6.92

Price$7.29

Redline 3/8" x 1-3/4" x 4-1/4" Round U-bolts & Nuts

Product ID SP01-020

These Redline 3/8" x 1-3/4" x 4-1/4" Round U-bolts and Nuts typically fit a 2,000-lb axle with a 1-3/4" spring width.

List Price: $6.92

Price$7.29

Redline 1/2" x 2-3/8" x 5-1/2" Round U-bolts, Nuts

List Price: $10.42

Price$10.79

Redline 1/2" x 2-3/8" x 5-1/2" Round U-bolts, Nuts

Product ID SP01-040

This Redline 1/2" x 2-3/8" x 5-1/2" Round U-bolts and Nuts typically fits a 3,500-lb axle with a 1-3/4" spring width.

List Price: $10.42

Price$10.79

Redline 1/2" x 3" x 7" Round U-bolts, Nuts

List Price: $11.06

Price$11.64

Redline 1/2" x 3" x 7" Round U-bolts, Nuts

Product ID SP01-060

This Redline 1/2" x 3" x 7" Round U-bolts with Nuts typically fits a 5,200-lb to 7000-lb axle with a 1-3/4" or 2" spring width.

List Price: $11.06

Price$11.64

Redline 9/16" x 3" x 7-1/4" Round U-bolts, Nuts

List Price: $15.40

Price$16.21

Redline 9/16" x 3" x 7-1/4" Round U-bolts, Nuts

Product ID SP01-080

These Redline 9/16" x 3" x 7-1/4" Round U-bolts and Nuts typically fit a 5,200-lb to 7000-lb axle with a 1-3/4" or 2" spring width.

List Price: $15.40

Price$16.21

Redline 9/16" x 3-1/2" x 8" Round U-bolts, Nuts

List Price: $13.47

Price$14.18

Redline 9/16" x 3-1/2" x 8" Round U-bolts, Nuts

Product ID SP01-100

This Redline 9/16" x 3-1/2" x 8" Round U-bolts and Nuts typically fits a 8,000-lb axle with a 2" spring width.

List Price: $13.47

Price$14.18

Redline 1/2" x 1-1/2" x 5" Square U-bolts, Nuts

List Price: $11.45

Price$12.05

Redline 1/2" x 1-1/2" x 5" Square U-bolts, Nuts

Product ID SP01-120

These Redline 1/2" x 1-1/2" x 5" Square U-bolts and Nuts are typically used for 3,500-lb axles, measure 1-1/2" wide from inside to inside.

List Price: $11.45

Price$12.05

Redline 9/16" x 1-3/4" x 5" Square U-bolts, Nuts

List Price: $11.54

Price$12.15

Redline 9/16" x 1-3/4" x 5" Square U-bolts, Nuts

Product ID SP01-140

These Redline 9/16" x 1-3/4" x 5" Square U-bolts and Nuts measure 1-3/4" wide from inside to inside with 18 threads per inch.

List Price: $11.54

Price$12.15

Redline 9/16" x 2" x 5-3/4" Square U-bolts, Nuts

List Price: $12.30

Price$12.95

Redline 9/16" x 2" x 5-3/4" Square U-bolts, Nuts

Product ID SP01-160

This Redline 9/16" x 2" x 5-3/4" Square U-bolts with Nuts measure 2" wide from inside to inside and includes 2 u-bolts, 4 nuts.

List Price: $12.30

Price$12.95

1/2" x 2-1/16" x 4-5/16" Galvanized Square U-bolt

List Price: $2.93

Price$3.08

1/2" x 2-1/16" x 4-5/16" Galvanized Square U-bolt

Product ID UBGC12X206X431

This 1/2" x 2-1/16" x 4-5/16" Galvanized Square U-bolt is galvanized to resist corrosion and measure 2-1/16" from inside to inside.

List Price: $2.93

Price$3.08

1/2" x 2-1/16" x 4-13/16" Galvanized Square U-bolt

List Price: $3.09

Price$3.26

1/2" x 2-1/16" x 4-13/16" Galvanized Square U-bolt

Product ID UBGC12X206X481

This 1/2" x 2-1/16" x 4-13/16" Galvanized Square U-bolt is galvanized to resist corrosion and measures 2-1/6 from inside to inside.

List Price: $3.09

Price$3.26

1/2" x 2-1/16" x 5-5/16" Galvanized Square U-bolt

List Price: $3.42

Price$3.61

1/2" x 2-1/16" x 5-5/16" Galvanized Square U-bolt

Product ID UBGC12X206X531

This 1/2" x 2-1/16" x 5-5/16" Galvanized Square U-bolt, threads are 2" long, is 2-1/6 from inside to inside and has 13 threads per inch.

List Price: $3.42

Price$3.61

1/2" x 2-1/6" x 5-1/2" Galvanized Square U-bolt

List Price: $3.37

Price$3.55

1/2" x 2-1/6" x 5-1/2" Galvanized Square U-bolt

Product ID UBGC12X206X550

This 1/2" x 2-1/6" x 5-1/2" Galvanized Square U-bolt is galvanized to resist corrosion and measures 2-1/16" from inside to inside.

List Price: $3.37

Price$3.55

1/2" x 2-1/16" x 5-13/16" Galvanized Square U-bolt

List Price: $3.51

Price$3.69

1/2" x 2-1/16" x 5-13/16" Galvanized Square U-bolt

Product ID UBGC12X206X581

This 1/2" x 2-1/16" x 5-13/16" Galvanized Square U-bolt measures 2-1/16" from inside to inside and has 13 threads per inch.

List Price: $3.51

Price$3.69

1/2" x 2-1/16" x 6-5/16" Galvanized Square U-bolt

List Price: $3.59

Price$3.78

1/2" x 2-1/16" x 6-5/16" Galvanized Square U-bolt

Product ID UBGC12X206X631

This 1/2" x 2-1/16" x 6-5/16" Galvanized Square U-bolt is galvanized to resist corrosion and measures 2-1/16" from inside to inside.

List Price: $3.59

Price$3.78

1/2" x 3-1/16" x 2-5/16" Galvanized Square U-bolt

List Price: $2.23

Price$2.34

1/2" x 3-1/16" x 2-5/16" Galvanized Square U-bolt

Product ID UBGC12X306X231

This 1/2" x 3-1/16" x 2-5/16" Galvanized Square U-bolt has 13 threads per inch, measures 3-1/16" from inside to inside and is galvanized to resist corrosion.

List Price: $2.23

Price$2.34

1/2" x 3-1/16" x 3-1/4" Galvanized Square U-bolt

List Price: $2.53

Price$2.66

1/2" x 3-1/16" x 3-1/4" Galvanized Square U-bolt

Product ID UBGC12X306X325

This 1/2" x 3-1/16" x 3-1/4" Galvanized Square U-bolt is galvanized to resist corrosion and measures 3-1/16" from inside to inside.

List Price: $2.53

Price$2.66

1/2" x 3-3/16" x 3-5/16" Galvanized Square U-bolt

List Price: $2.56

Price$2.69

1/2" x 3-3/16" x 3-5/16" Galvanized Square U-bolt

Product ID UBGC12X306X331

This 1/2" x 3-3/16" x 3-5/16" Galvanized Square U-bolt has 13 threads per inch, measures 3-1/16" from inside to inside, threads are 2" long.

List Price: $2.56

Price$2.69

1/2" x 3-3/16" x 3-13/16" Galvanized Square U-bolt

List Price: $2.76

Price$2.91

1/2" x 3-3/16" x 3-13/16" Galvanized Square U-bolt

Product ID UBGC12X306X381

This 1/2" x 3-3/16" x 3-13/16" Galvanized Square U-bolt is galvanized to resist corrosion, the threads are 1-1/2" long.

List Price: $2.76

Price$2.91

1/2" x 3-1/16" x 4-5/16" Galvanized Square U-bolt

List Price: $3.09

Price$3.26

1/2" x 3-1/16" x 4-5/16" Galvanized Square U-bolt

Product ID UBGC12X306X431

This 1/2" x 3-1/16" x 4-5/16" Galvanized Square U-bolt is galvanized to resist corrosion and is sold per each u-bolt.

List Price: $3.09

Price$3.26

1/2" x 3-1/16" x 5-5/16" Galvanized Square U-bolt

List Price: $3.56

Price$3.75

1/2" x 3-1/16" x 5-5/16" Galvanized Square U-bolt

Product ID UBGC12X306X531

This 1/2" x 3-1/16" x 5-5/16" Galvanized Square U-bolt is galvanized to resist corrosion and has 13 threads per inch.

List Price: $3.56

Price$3.75

1/2" x 3-1/16" x 7-5/16" Galvanized Square U-Bolt

List Price: $4.31

Price$4.53

1/2" x 3-1/16" x 7-5/16" Galvanized Square U-Bolt

Product ID UBGC12X306X731

This 1/2" x 3-1/16" x 7-5/16" Galvanized Square U-Bolt is galvanized to resist corrosion and measures 3-1/16" from inside to inside.

List Price: $4.31

Price$4.53

1/2" x 2-1/8" x 5-1/4" Zinc Square U-bolt

List Price: $2.56

Price$2.69

1/2" x 2-1/8" x 5-1/4" Zinc Square U-bolt

Product ID UBZC12X212X525

This 1/2" x 2-1/8" x 5-1/4" Zinc Square U-bolt is zinc plated to resist corrosion, has 13 threads per inch and is sold per each.

List Price: $2.56

Price$2.69

1/2" x 2-1/8" x 6-1/2" Zinc Square U-bolt

List Price: $3.42

Price$3.61

1/2" x 2-1/8" x 6-1/2" Zinc Square U-bolt

Product ID UBZC12X212X650

This 1/2" x 2-1/8" x 6-1/2" Zinc Square U-bolt is zinc plated to resist corrosion and measures 2-1/8" from inside to inside.

List Price: $3.42

Price$3.61

1/2" x 3-1/8" x 5-1/4" Zinc Square U-bolt

List Price: $3.27

Price$3.45

1/2" x 3-1/8" x 5-1/4" Zinc Square U-bolt

Product ID UBZC12X312X525

This 1/2" x 3-1/8" x 5-1/4" Zinc Square U-bolt is zinc plated to resist corrosion and measures 3-1/8" from inside to inside.

List Price: $3.27

Price$3.45

1/2" x 3-1/8" x 6-1/2" Zinc Square U-bolt

List Price: $3.91

Price$4.12

1/2" x 3-1/8" x 6-1/2" Zinc Square U-bolt

Product ID UBZC12X312X650

This 1/2" x 3-1/8" x 6-1/2" Zinc Square U-bolt measures 3-1/8" from inside to inside and has 13 threads per inch.

List Price: $3.91

Price$4.12

3/8" x 1-3/4" x 4" Zinc Square U-bolt

List Price: $2.31

Price$2.43

3/8" x 1-3/4" x 4" Zinc Square U-bolt

Product ID UBZC38X175X400

This 3/8" x 1-3/4" x 4" Zinc Square U-bolt is zinc plated to resist corrosion and measures 1-3/4" from inside to inside.

List Price: $2.31

Price$2.43

3/8" x 2-1/4" x 4-1/4" Zinc Square U-bolt

List Price: $2.31

Price$2.43

3/8" x 2-1/4" x 4-1/4" Zinc Square U-bolt

Product ID UBZC38X225X425

This 3/8" x 2-1/4" x 4-1/4" Zinc Square U-bolt is zinc plated to resist corrosion and measures 2-1/4" from inside to inside. It has 16 threads per inch. Priced and sold per each.

List Price: $2.31

Price$2.43

3/8" x 2-3/8" x 5-1/4" Zinc Square U-bolt

List Price: $2.27

Price$2.39

3/8" x 2-3/8" x 5-1/4" Zinc Square U-bolt

Product ID UBZC38X238X525

This 3/8" x 2-3/8" x 5-1/4" Zinc Square U-bolt is zinc plated to resist corrosion, has 16 threads per inch, measures 2-3/8" from inside to inside.

List Price: $2.27

Price$2.39

3/8" x 3-3/8" x 4-1/4" Zinc Square U-bolt

List Price: $2.34