This OEM flanged nut used in several mounting applications, including engine mounts, transmission mounts, and body mounting points. In the Z32 specifically, it is commonly associated with motor mount and transmission mount hardware, securing components under load while resisting loosening from vibration. Its standardized thread and flange design help distribute clamping force evenly, improving durability and alignment. Because it is used in multiple locations, it is often replaced during drivetrain service, especially when addressing worn mounts or during engine and transmission removal.
- USDM 300ZX (Z32): 1990–1996 (naturally aspirated and twin-turbo models)
- JDM Fairlady Z (Z32): 1989–1996 (naturally aspirated and twin-turbo models)
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