A flange nut has a built-in flange that works like an attached washer, spreading the load and helping the nut stay put without a separate washer. Whether that flange is serrated, plus the thread size and material, are what shape the choice.
CSG keeps parts like this on hand as part of a managed C-parts program, so you can order them alongside the rest of your fasteners instead of chasing separate suppliers. Ask us for a quote or see what else we stock.
Engineering support for material and finish selection
Global sourcing for lead time and cost optimization
Supply continuity and program support
Consolidate standard and custom parts through one partner