Heavy Duty U-bolts 16mm

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  • 16mm Heavy Duty U bolt

    16mm Heavy Duty Galvanised U Bolts

    $6.50$18.50 inc GST
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16mm Heavy Duty U-bolts suited to caravans and trailers over 1500kg

16mm heavy-duty U-bolts suited to caravans and trailers over 1500kg. U-bolts over 1500kg need to withstand greater shock loadings.

Heavy-duty hardware is ideal for trailers with a weight capacity of over 3t and up to 4.5t ATM.

Heavy Duty U-Bolt and Plate Kit

  • 4 x 16mm Galvanised U-Bolts
  • 8 x 16mm Nylock Nuts
  • 8 x 16mm Galvanised Washers
  • 1 x 10mm ElectroGal Fishplate
  • 2 x 10mm Axle Pads – to be welded to the Axle

Re-tightening u-bolts

Re-tightened after 300 kilometres from installation.

Loose u-bolts cause problems. These problems include

  • Spring slippage off the axle.
  • Moving axles backwards of the spring centre.
  • Broken springs.
  • Brake cable and wiring damage.
  • Excess tyre wear.
  • Axle separation from the trailer.
  • Damage to caravan skirts.
  • Damage to water and sullage tanks.

Loose u-bolts are a major cause of caravan accidents therefore, we recommend re-tightening.

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.

Heavy Duty U-Bolts and Jockey Wheel 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