Dana Spicer 21588X Inner Spindle Nut Assembly (with Pin)
This is an inner spindle nut with safety pin used to secure the inner portion of the spindle/hub assembly on certain front axle configurations.
- Thread size: 1.625-16 (i.e., 1 ⅝″ major diameter, 16 threads per inch)
- Flange outer diameter: ~55.36 mm (~2.18″)
- Thickness: ~9.59 mm (~0.38″) as listed in one spec sheet.
- Material: Hardened steel, OEM spec (Spicer quality) for durability in axle service.
- Comes with pin: The nut includes a hole/pin orientation for the safety-pin locking to prevent rotation under service.
