1/4 -20 Nylon Plastic Coarse Thread Lock Nuts LNN-073 (10 pcs.)

Diameter: 1/4 Diameter 2: 1/2 Thickness: 1/4 Material: Nylon Driver Type: 7/16 Wrench Thread Size: 20 (Coarse) Type: Lock Nut Box of 10. A lock nut is a nut that resists loosening under vibrations and torque.