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U-Bolts

Showing 1–12 of 18 results

  • 75mm galvanised U-Bolts

    75mm Galvanised Jockey Wheel U-Bolt

    U75SGH $6.50 - $12.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 175mm x 50mm square galvanised U-bolt

    50mm Square Galvanised U Bolt

    U50SGH $7.50 - $15.50
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 100mm Galvanised U Bolt

    100mm Galvanised U Bolts

    U100SGH $7.50 - $16.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 40mm Square Galvanised U-bolt

    40mm Square Galvanised U Bolt

    U40SGH $8.00 - $12.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 45mm Round Galvanised UBolt

    45mm Round Galvanised U-Bolt

    U45RGH $8.50 - $13.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • U39R - 39mm Round U-bolt 112mm long

    39mm Round Galvanised U-Bolt

    U39RGH $9.00 - $11.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 50mm Square Galvanised U Bolts

    45mm Square Galvanised U-Bolt

    U45SGH $9.00 - $12.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 45mm Round Galvanised UBolt

    50mm Round Galvanised U-Bolt

    U50RGH $9.50 - $15.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 60mm x 16mm Square ElectroGal U-Bolt

    65mm x 16mm Round ElectroGal U-Bolt

    CM605GH $9.50
    Add to cart 224 in stock
  • 16mm x 45mm Square ElectroGal U-Bolt

    45mm x 16mm Square ElectroGal U-Bolt

    CM601H $9.90
    Add to cart 385 in stock
  • 56mm Square Galvanised Chassis U-Bolt

    U56SGH $10.00 - $12.00
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 80mm Square Galvanised U Bolt

    80mm Square Galvanised Chassis U-Bolt

    U80S120GH $11.00
    Add to cart 80 in stock

Square Axle U-bolt Fasteners for Caravans, Campers and Boat Trailers
Square axle U-bolt fasteners are rated at 1500kg single axle trailers, although our U-bolts are tested to destruction which occurs at 17,000kg.

The smaller rating allows for several factors, including shock-loading events.

U bolts clamp axles used for trailers, caravans, and campers.
How to measure axle U-Bolts
Significantly, to prevent clamp failure, tighten u-bolts after 300 kilometres.

Gal square U Bolts are manufactured from mild steel and stretch after the initial tightening.

Once the fishplate begins to bend during tightening, the u-bolts are tight.

Finally, expect to gain 1/4 or 1/2 a turn when retightening after 300 kilometres.

Why U-bolts may be the Major Cause of Accidents.

Stretching U-Bolts cause Caravanning Problems.
Couplemate U-Bolts

A

Round U-Bolts
A

Square U-Bolts
B

Width
C

Height
Part Number

1 ½ inch (39mm)

½ inch (12.7mm)
4 inch (100mm)
U39R4GH

1 ½ inch (39mm)

½ inch (12.7mm)
4½ inch (112mm)
U39R45GH

1 ½ inch (39mm)

½ inch (12.7mm)
5 inch (125mm)
U39R5GH

1 ½ inch (39mm)

½ inch (12.7mm)
5½ inch (137mm)
U39R55GH

1 ¾ inch (45mm)

½ inch (12.7mm)
4 inch (100mm)
U45R4GH

1 ¾ inch (45mm)

½ inch (12.7mm)
4½ inch (112mm)
U45R45GH

1 ¾ inch (45mm)

½ inch (12.7mm)
5 inch (125mm)
U45R5GH

1 ¾ inch (45mm)

½ inch (12.7mm)
5½ inch (137mm)
U45R55GH

1 ¾ inch (45mm)

½ inch (12.7mm)
6 inch (150mm)
U45R6GH

1 ¾ inch (45mm)

½ inch (12.7mm)
6½ inch(162mm)
U45R65GH

2 inch (50mm)

½ inch (12.7mm)
4 inch (100mm)
U50R4GH

2 inch (50mm)

½ inch (12.7mm)
4½ inch (112mm)
U50R45GH

2 inch (50mm)

½ inch (12.7mm)
5 inch (125mm)
U50R5GH

2 inch (50mm)

½ inch (12.7mm)
5½ inch (137mm)
U50R55GH

2 inch (50mm)

½ inch (12.7mm)
6 inch (150mm)
U50R6GH

2 inch (50mm)

½ inch (12.7mm)
6½ inch(162mm)
U50R65GH

2 inch (50mm)

½ inch (12.7mm)
7 inch (175mm)
U50R7GH

1 ½ inch (40mm)
½ inch (12.7mm)
4 inch (100mm)
U40S4GH

1 ½ inch (40mm)
½ inch (12.7mm)
4½ inch (112mm)
U40S45GH

1 ½ inch (40mm)
½ inch (12.7mm)
5 inch (125mm)
U40S5GH

1 ½ inch (40mm)
½ inch (12.7mm)
5½ inch (137mm)
U40S55GH

1 ½ inch (40mm)
½ inch (12.7mm)
6 inch (150mm)
U40S6GH

1 ¾ inch (45mm)
½ inch (12.7mm)
4 inch (100mm)
U45S4GH

1 ¾ inch (45mm)
½ inch (12.7mm)
4½ inch (112mm)
U45S45GH

1 ¾ inch (45mm)
½ inch (12.7mm)
5 inch (125mm)
U45S5GH

1 ¾ inch (45mm)
½ inch (12.7mm)
5½ inch (137mm)
U45S55GH

1 ¾ inch (45mm)
½ inch (12.7mm)
6 inch (150mm)
U45S6GH

1 ¾ inch (45mm)
½ inch (12.7mm)
6½ inch(165mm)
U45S65GH

1 ¾ inch (45mm)
½ inch (12.7mm)
7 inch (175mm)
U45S7GH

2 inch (50mm)
½ inch (12.7mm)
3 inch (75mm)
U50S3GH

2 inch (50mm)
½ inch (12.7mm)
4 inch (100mm)
U50S4GH

2 inch (50mm)
½ inch (12.7mm)
4½ inch (112mm)
U50S45GH

2 inch (50mm)
½ inch (12.7mm)
5 inch (125mm)
U50S5GH

2 inch (50mm)
½ inch (12.7mm)
5½ inch (137mm)
U50S55GH

2 inch (50mm)
½ inch (12.7mm)
6 inch (150mm)
U50S6GH

2 inch (50mm)
½ inch (12.7mm)
6½ inch (165mm)
U50S65GH

2 inch (50mm)
½ inch (12.7mm)
7 inch (175mm)
U50S7GH

2 inch (50mm)
½ inch (12.7mm)
8 inch (200mm)
U50S8GH

2 inch (50mm)
½ inch (12.7mm)
10 inch (250mm)
U50S10GH

2 ¼ inch (56mm)
½ inch (12.7mm)
4½ inch (112mm)
U56S45GH

2 ¼ inch (56mm)
½ inch (12.7mm)
5 inch (125mm)
U56S5GH

2 ¼ inch (56mm)
½ inch (12.7mm)
5½ inch (137mm)
U56S55GH

2 ¼ inch (56mm)
½ inch (12.7mm)
6½ inch (165mm)
U56S65GH

3 inch (75mm)
½ inch (12.7mm)
3 inch (75mm)
U75S75GH

3 inch (75mm)
½ inch (12.7mm)
4 inch (100mm)
U75S100GH

3 inch (75mm)
½ inch (12.7mm)
5 inch (125mm)
U75S125GH

3 inch (75mm)
½ inch (12.7mm)
6 inch (150mm)
U75S150GH

3 inch (75mm)
½ inch (12.7mm)
7 inch (175mm)
U75S175GH

3 ¼ inch (82mm)
½ inch (12.7mm)
4 ¾ inch (120mm)
U80S120GH

4 inch (100mm)
½ inch (12.7mm)
3 inch (75mm)
U100S75GH

4 inch (100mm)
½ inch (12.7mm)
4 inch (100mm)
U100S100GH

4 inch (100mm)
½ inch (12.7mm)
5 inch (125mm)
U100S125GH

4 inch (100mm)
½ inch (12.7mm)
8 inch (200mm)
U100S200GH

1 ¾ inch (45mm)

⅝ inch (16mm)
6 inch (150mm)
CM600GH

2 inch (50mm)

⅝ inch (16mm)
6 inch (150mm)
CM602GH

2 ⅓ inch (60mm)

⅝ inch (16mm)
7 inch (175mm)
CM604GH

1 ¾ inch (45mm)
⅝ inch (16mm)
6 inch (150mm)
CM601GH

2 inch (50mm)
⅝ inch (16mm)
7 inch (175mm)
CM603-7GH