The Mittler Bros. N-12 Right-Hand Spindle Nut is the right-hand thread spindle nut for Grand National rear hub assemblies. Left and right spindle nuts have opposite thread directions — using the correct nut for each side is critical for safe hub retention. The N-12 designation indicates right-hand thread.
Install and remove with the Mittler Bros. 12 GN Spindle Nut Socket (SKU 1400-013) for clean, damage-free service. For the left-hand version, see the NL-12 Left-Hand Spindle Nut (SKU 1400-509). Made in the USA.
