Nut - Castle for Defender (1986 – 2006) (Up to KA930455) – 3259

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This castle nut is used on axle and suspension components across a wide range of Land Rover models, securing components such as differential pinion flanges and steering joints wher e a split pin is required to lock the nut in position. Unlike a nyloc nut, the castle nut relies on a cotter pin through the castellations to prevent rotation, making correct torque and pin fitment critical to maintaining component retention. Using an incorrect nut type in these applications can result in loosening under load and potential loss of steering or drivetrain integrity. Key Features Castellated design allows a split pin to be inserted through the nut and shaft for positive mechanical locking Correct replacement for early applications specifying a castle nut rather than a nyloc nut OEM-specification fitment for axle and suspension assemblies across multiple Land Rover platforms Always replace the split pin when refitting; reusing a previously bent pin is not recommended Vehicle Fitment Fits Defender (1986–2006, up to KA930455), Discovery 1 (1989–1998, early castle nut vehicles), Range Rover Classic (diff pinion 4-bolt flange), Series 1, Series 2 & 2A (88-inch), and Series 3 (88-inch, up to June 1980, Rover-type axles). Not sure about fitment? Feel free to get in touch at [email protected] Show more