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.

Diameters

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.

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