1/4"-20 Serrated Flange Lock Nut - Plated 1/4"-20 serrated flange lock nut - plated SFN1420 $0.040/ea
5/16"-18 Serrated Flange Lock Nut - Plated 5/16"-18 serrated flange lock nut - plated SFN51618 $0.060/ea
3/8"-16 Serrated Flange Lock Nut - Plated 3/8"-16 serrated flange lock nut - plated SFN3816 $0.090/ea
7/16"-14 Serrated Flange Lock Nut - Plated 7/16"-14 serrated flange lock nut - plated SFN71614 $0.220/ea
1/2"-13 Serrated Flange Lock Nut - Plated 1/2"-13 serrated flange lock nut - plated SFN1213 $0.220/ea
5/8"-11 Serrated Flange Lock Nut - Plated 5/8"-11 serrated flange lock nut - plated SFN5811 $0.570/ea