Round Axle U-bolts 1/2

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  • 39mm Round U-bolt 112mm long

    39mm Round Galvanised U-Bolt Incl Gal Nylocks

    $9.00$11.00 inc GST
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  • 45mm Round Galvanised UBolt

    45mm Round Galvanised U-Bolt

    $8.50$13.00 inc GST
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  • 45mm Round Galvanised UBolt

    50mm Round Galvanised U-Bolt

    $9.50$15.00 inc GST
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  • 45mm Round Galvanised UBolt

    65mm Round Galvanised U-Bolt

    $11.00$15.00 inc GST
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  • 45mm Round Galvanised UBolt

    75mm Round Galvanised U-Bolt

    $15.00 inc GST
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1/2 inch Galvanised Round U Bolts, Nylocks, Washers, Premium Grade

1/2 inch Gal Round U Bolts 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

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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