Non-Locking Flange Nuts are hex nut with an enlarged circular base (or flange) flaring out from the bottom of the nut, which acts as an integrated, non-spinning washer. Since the tightening torque is distributed over a larger area, there is less chance of deformation.
are available on the FCH Network with Imperial/US diameters that range from #1 to 6 and with Metric diameters that range from M3 to M48. The length of is usually measured from the point to the underside of the head.
are available on the FCH Network in materials that range from Steel to Nylon
are available on the FCH Network in finishes or coatings that range from Plain to Phosphate