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1/2 -20 Black Chrome Plated Steel Fine Thread Nylon Insert Lock Nuts (3 pcs.)
Diameter: 1/2 Diameter 2: 7/8 Thickness: 19/32 Material: Steel Finish: Black Chrome Driver Type: 3/4 Wrench Thread Size: 20 (Fine) Style: Nylon Insert Type: Lock Nut Box of 3. A lock nut is a nut that resists loosening under vibrations and torque.
$19.01 Free Delivery