CM001 The Marriage Saver Reversing Guide.

Caravan & trailer Reversing Guide

The Couplemate Caravan Reversing Guide (Marriage Saver®) makes hitching up your caravan, boat or camper easier than ever! Reversing cameras are great, but they do not stop accidents as efficiently as this trailer guide.

Australian Made and Owned.

COUPLEMATE IS A PROUD MEMBER OF THE AUSTRALIAN MADE PROGRAM.

We support local suppliers and help bring business back to Australian shores. There is strong demand for Australian Made caravan and trailer parts across the market.

The facts are simple; Australian Made goods create employment in Australia.

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U-Bolts & Kits

Showing 25–27 of 27 results

  • 40mm Square Galvanised U-bolt

    40mm Square Galvanised U Bolt

    $8.00 - $12.00
    Options
  • 50mm Square Galvanised U Bolts

    45mm Square Galvanised U-Bolt

    $9.00 - $12.00
    Options
  • U39R - 39mm Round U-bolt 112mm long

    39mm Round Galvanised U-Bolt

    $9.00 - $11.00
    Options

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

Australian Made and Owned.

COUPLEMATE IS A PROUD MEMBER OF THE AUSTRALIAN MADE PROGRAM.

We support local suppliers and help bring business back to Australian shores. There is strong demand for Australian Made caravan and trailer parts across the market.

The facts are simple; Australian Made goods create employment in Australia.

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