Flange Nuts
Flange nuts are a type of fastener that have a built-in flange on one end, which provides a wider bearing surface for the nut to bear against. The flange helps to distribute the clamping force over a larger area, making the nut more secure and less likely to loosen. They are commonly used in applications where a wider bearing surface is needed, such as in heavy machinery, vehicles, and construction.
Flange nuts are typically made from a variety of materials such as carbon steel, stainless steel, and aluminium, and can be plated for added corrosion resistance. They are usually made by cold forming the material, which is a process of shaping metal by pressing it between two dies. The dies are used to cut and shape the material into the desired shape.
Flange nuts can also be made by other methods such as forging, casting or bar turning, the latter being our method of manufacture. They can also have different coatings such as zinc, chrome or black oxide for added corrosion resistance.
It is important to note that flange nuts are not recommended for use in applications where vibration is present as the flange can add to the nut's tendency to loosen over time. For this reason flange nuts sometimes have serrated bearing faces to increase friction.
Trojan Special Fasteners Ltd can manufacture all manner of unserrated flange and collar nuts. Predominantly these forms exist:
1. Plain Flange Nuts
Flange Nut
Collar Nut
2. Prevailing Torque Locking Flange Nuts
Nylon Insert Flange Nuts
Nylon Insert Collar Nuts
Whilst Trojan Special Fasteners Ltd does not manufacture patented and trademarked items, the following are examples of axially slotted and deformed flange nuts which we have made to our customer's drawings:
All Metal Prevailing Torque Flange Nut
All Metal Prevailing Torque Collar Nuts
3. Collar or reduced Shank nuts
Trojan Special Fasteners will manufacture, from bar turning, high precision flange and collar nuts. Flange nuts typically have a large round flange at one end of the nut which acts as a fixed washer. This in effect distributes the pressure of the nut across the part being secured in an even manner which ultimately reduces the chance of damage to the part and lessens any effects of loosening because it's fastened on an uneven surface.
Trojan special fasteners can also manufacture collar nuts, which have a collar diameter which is equal to or less than the across flat of the nut. Like flange nuts they reduce the need for an additional washer, which helps keep assembly time and costs low.
It is possibly to combine prevailing torque features like the addition of a nylon insert ring, axial slots or thread deformation from the tops or sides into a nut.
Trojan Special Fasteners can axially slot and deform nuts from the top or the sides to provide a prevailing torque feature on your nuts - as no open standard for these exists we would ask that you provide your dimensions or a drawing and we can manufacture to that. Additionally, we can torque test your nuts for you, just provide us with the female threaded part and we'll take care of the rest!
In addition to standard preferred sizes, we also manufacture non preferred and non standard or special thread and nut forms and sizes.
We can manufacture to the following specifications:
We can manufacture collar and flange nuts to the following specifications:
| Standard | Description |
|---|---|
| ASME/ANSI B18.16.3M | All metal prevailing torque hexagon flange nuts |
| ASME/ANSI B18.16.4 | Large hexagon flange locknuts |
| ASME/ANSI B18.16.4 | Regular hexagon flange locknuts Table 2 |
| ASME/ANSI B18.2.2 | Hex flange nuts Table 12 |
| ASME/ANSI B18.2.2 | Hex flat jam nuts |
| ASME/ANSI B18.2.2 | Hex flat nuts and hex flat jam nuts Table 3 |
| ASME/ANSI B18.2.2 | Large hex flange nuts |
| ASME/ANSI B18.2.2 | Metric hex flange nuts |
| ASME/ANSI B18.2.4.4M | Metric hex flange nuts |
| ASME/ANSI B18.2.6 | Heavy hex flat nuts Table 10 |
| ASME/ANSI B18.2.6 | flat nuts and heavy hex flat jam nuts Table 9 |
| DIN 6331 | Hexagon collar nuts |
| DIN 6923 | Hexagon flange nuts |
| DIN 6926 | Prevailing torque hexagon nylon insert flange nuts |
| DIN 6927 | All metal prevailing torque hexagon flange nuts |
| EN 14218 | Hexagon flange nuts |
| EN 1661 | Hexagon flange nuts |
| Standard | Description |
|---|---|
| IFI 145 | Hexagon flange nuts |
| IFI 145 | Large Hexagon flange nuts |
| ISO 10663 | Hexagon flange nuts |
| ISO 12125 | Prevailing torque hexagon nylon insert flange nuts |
| ISO 12126 | All metal prevailing torque hexagon flange nuts |
| ISO 4161 | Hexagon flange nuts |
| ISO 7043 | Prevailing torque hexagon nylon insert flange nuts |
| NF E25-406 | Hexagon flange nuts |
| NF E25-413 | Prevailing torque hexagon nylon insert flange nuts |
| NF E25-414 | All metal prevailing torque hexagon flange nuts |
| NF E25-420 | All metal prevailing torque hexagon flange nuts, style 2 |
| NF E25-421 | All metal prevailing torque hexagon flange nuts, style 1 |
| NF E25-422 | All metal prevailing torque hexagon flange nuts, style 2 |
| NF E25-506 | Prevailing torque hexagon nylon insert flange nuts |
| NF E25-507 | All metal prevailing torque hexagon flange nuts |
