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.

Latest Post
Hydrastar Troubleshooting Guide

Hydrastar Troubleshooting Guide

Hydrastar Electric Brake Actuators are widely favoured for boat trailers with hydraulic brakes. If you are experiencing issues with your Hydrastar unit, there are a variety of steps you can take to troubleshoot the issue. Troubleshoot: Hydrastar Not Working Ensure the...

read more

Round Axle U-bolt Fasteners

Showing all 5 results

  • 45mm Round Galvanised UBolt

    75mm Round Galvanised U-Bolt

    $15.00
    Add to cart
  • 45mm Round Galvanised UBolt

    65mm Round Galvanised U-Bolt

    $11.00$15.00
    Options
  • 45mm Round Galvanised UBolt

    50mm Round Galvanised U-Bolt

    $9.50$15.00
    Options
  • 45mm Round Galvanised UBolt

    45mm Round Galvanised U-Bolt

    $8.50$13.00
    Options
  • U39R - 39mm Round U-bolt 112mm long

    39mm Round Galvanised U-Bolt Incl Gal Nylocks

    $9.00$11.00
    Options

Round Axle U-bolt Fasteners

Round axle U-bolt fasteners are generally 1/2 inch or 12.5mm for 1500kg axles. Our U-bolts are tested for destruction which occurs at 17,000kg.

U bolts are used to clamp axles used to trailers, caravans, and campers.

Importantly, to prevent clamp failure, tighten u bolts after 300 kilometres.

Gal Round U Bolts are manufactured from mild steel and stretch as they set after the initial tightening.

During tightening, once the fishplate begins to bend, 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

Couplemate U-Bolts
Please be advised not all stock is available – please contact our sales team for the specific size you are interested if it is not listed on the website.
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.

You may be interested in …
Hydrastar Troubleshooting Guide

Hydrastar Troubleshooting Guide

Hydrastar Electric Brake Actuators are widely favoured for boat trailers with hydraulic brakes. If you are experiencing issues with your Hydrastar unit, there are a variety of steps you can take to troubleshoot the issue. Troubleshoot: Hydrastar Not Working Ensure the...

read more

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Call 07 3348 3822

Available Monday to Friday, 8am to 5pm.