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This SPC Performance 3/4-16 left-hand jam nut is specified for driver-side control arm applications and functions as the locking nut for threaded adjusting sleeves. The left-hand thread orientation matches driver-side adjustment hardware and helps secure alignment settings once proper length or camber is achieved. It’s a simple, application-specific fastener intended to finish an adjustable arm installation.
SPC Performance Control Arm Driver Side 3/4in. Jam Nut
