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 |