Couplemate Trailer Parts.

U-bolts

  • 75mm x 50mm square galvanised U-bolt

    50mm Square Galvanised U-Bolt Incl Nylocks Nuts

    Price range: $5.75 through $9.00 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 100mm Square Galvanised U-Bolts - 75mm Long

    100mm Square Galvanised U-Bolts

    Price range: $5.95 through $11.00 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 45mm Square Galvanised U-Bolts - 100m Long

    45mm Square Galvanised U-Bolts

    Price range: $6.00 through $7.25 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 56mm Square Galvanised U-Bolt

    56mm Square Galvanised U-Bolt

    Price range: $6.05 through $8.25 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 75mm galvanised U-Bolts - 75mm

    75mm Square Galvanised U-Bolts

    Price range: $5.00 through $9.00 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 50mm Square Galvanised U Bolts

    65mm Square U-Bolt (165mm)

    UBOLT-65S165-H $12.00 Inc.GST
    Add to cart In stock
  • 45mm x 175mm Round Galvanised U-Bolt

    45mm Round Galvanised U-Bolts

    Price range: $5.00 through $7.00 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 45mm x 175mm Round Galvanised U-Bolt

    50mm Round Galvanised U-Bolt

    Price range: $5.50 through $9.35 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 45mm x 175mm Round Galvanised U-Bolt

    65mm Round Galvanised U-Bolts

    Price range: $6.60 through $7.20 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • 80mm Square Galvanised U Bolt

    80mm Square U-Bolt (120mm)

    UBOLT-80S120-H $9.50 Inc.GST
    Add to cart In stock
  • 40mm Square Galvanised U-bolt nylock

    40mm Square Galvanised U-Bolt

    Price range: $6.00 through $7.70 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock
  • U39R - 39mm Round U-bolt 112mm long

    39mm Round Galvanised U-Bolt

    Price range: $6.00 through $7.50 Inc.GST
    Options This product has multiple variants. The options may be chosen on the product page In stock

Galvanised U-bolts are available in various shapes (round and square) and sizes for general clamping applications, especially in outdoor and marine environments, due to their corrosion resistance.

Product Information and Types

Finish: Galvanised U-bolts are typically finished using an ElectroGal process, which provides superior corrosion resistance for outdoor and marine applications compared to standard zinc plating.

They come in two main shapes:

Round: Designed for securing round objects like pipes or round axles.
Square: Intended for square profiles such as trailer drawbars or chassis rails.
Materials: Generally made from steel, they often come with ElectroGal nylock nuts and washers to ensure a secure and rust-resistant fit.

Reviewers suggest replacing Nyloc nuts when reusing U-bolts, as Nyloc nuts are one-use-only for optimal safety.
Sizing: U-bolts are measured by their internal width (ID) and internal length/height (L). Common sizes range from 1/2-inch (39mm Round ID) to larger 100mm square options and beyond, with measurements often referring to the nominal bore (NB) of the pipe they are designed to fit.

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