SpecificationsNAS1291C04M Reference : 220NAS1291C04MBrand :ESNANAS Nuts - Thread Size: 4-40, Head Width: 9/64", Self-LockingGet Shipping EstimateZIP*Non-stock pricing and lead time may be subject to change based on manufacturing availability.
SpecificationsMS21083C04 Reference : 220MS21083C04Brand :ESNAMil-Spec Nut - Thread: 4-40, Self Locking Nut, Hexagon, Low Height, Corrosion Resistant Steel, Nylon Insert, PassivatedGet Shipping EstimateZIP*Non-stock pricing and lead time may be subject to change based on manufacturing availability.