Flange Nuts

Trojan Special Fasteners Ltd can manufacture all manner ofunserrated 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 castle and slotted 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 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

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