(25 PCS) Flange Nuts Serrated, Stainless Steel 18-8, 5/16"-18,by Fullerkreg
- Made from 18-8 stainless steel, these flange nuts have good chemical resistance.
- The flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. Height includes the flange.
- Skip the washer—these metric stainless steel nuts have a flange that does the same job, spreading pressure across its surface for a strong hold.
- They're also called collar nuts. By leaving out the washer, they save assembly time, which adds up on parts that have multiple bolts.
- On the other hand, they may not fit into tight spots since they have a wider profile than standard nuts. All are 18-8 stainless steel, which is nearly as strong as steel and stands up to outdoor, washdown, and other corrosive environments without rusting.