Flange nut s have a round flange with a large diameter at the bottom. It has a flat flange and a serrated flange. The flange is similar to a washer, which can increase the force area, evenly disperse the pressure on the nut, and reduce the damage to the surface coating. Compared with ordinary hexagonal nuts, flange nuts are molded in one piece and do not require the addition of flat washers or spring washers.
Specifications
| Forming | Hot forging, cold heading. |
| Size | 1/4-20 to 1-1/4″-7 (M6 to M24 in metric) or customized。 |
| Thread | UNC, UNF, Metric Coarse, Metric Fine, Left Hand Threaded. |
| Material | Carbon steel, stainless steel, copper, titanium alloy, aluminum alloy. |
| Finishes | Black oxide, Dacromet, hot-dip galvanized, electro-galvanized, nickel plated, passivated, polished. |
| Strength | Grade 04, 05, 5, 6, 8, 10, 12; A2-50, A4-50, A2-70, A4-70. |
| Standard | DIN, ISO, JIS, BS, PN. |
| Packaging | Plastic box, carton, pallet, wooden case or customized. |
Types
Flange Rivet Nut
Round Flange Nut
Flange Bolt and Nut
12 Point Flange Nut
Standard
Difference from Normal Nuts + Washers
| Feature | Flange Nut | Standard Nut + Washer |
|---|---|---|
| Loosening Resistance | Excellent (Serrations bite into the surface) | Fair (Relies on a lock washer or other method) |
| Surface Area | Large (Integrated flange) | Depends on the washer size |
| Installation Efficiency | High (One part, one tightening operation) | Lower (Requires handling two parts) |
| Surface Damage | Serrated flanges can cause indentations; flat flanges protect the surface. | Less (Flat washer protects the surface) |
| Cost | Higher per part, but potentially lower total assembly cost | Lower per part, but higher total part count and assembly cost |
High Quality Flange Nuts Supplier in China
51fasteners wholesales and exports flange nuts in a variety of sizes, thicknesses, materials and finishes, including inch and metric. Supporting projects of any size. If the style of flange nut you need is not found on our website, contact us today for a customized quote. We are always here to assist you!