5/8-11 Non Flanged Top Lock Hex Nuts / Grade 9 / EcoGuard 1000 Hour Coating / DFAR Compliant (Quantity: 500 pcs)

An all-metal one-piece hex nut which derives its prevailing torque characteristics from controlled distortion of its top threads from their normal helical form to a more elliptical shape Top Lock Hex Nuts / Grade 9 Prevailing Torque to IFI 100/107 Grade-C / DFAR Compliant EcoGuard 1000 Hour Gray/Silver Coating Proof Load: 180 000 pst