Trapezoidal flange bronze nuts (CC493K - CuSn7ZnPb) according to ISO 2901/2903 and DIN 103 tolerance 7H. Used for work under load and for drives with medium and low speeds, manual or motorised. The use of bronze trapezoidal nuts mounted on steel or stainless-steel screws is successful, especially if lubrication is ensured.
We offer you different types of trapezoidal nuts with a thread that is obtained by chip removal. They are adapted to your needs thanks to their various sizes or shapes and the properties of the material they are made of: steel, bronze or nylon. Our wide range of quality nuts can meet all your requirements!
Used for manual or motorised operation at low speeds, for clamping or locking functions, or for static loads. Not recommended with stainless steel screws.
Used for manual or motorised operation at low to medium speeds and under heavy load. The combination with steel or stainless-steel screws is successful, especially if lubrication is well ensured.
Used for manual or motorised operation with medium to high speeds and moderate loads. The combination with steel or stainless-steel screws gives good results and a very low noise level. These nuts can be used without lubrication but their lifespan will be shortened.
Ød = nominal thread diameter
P = thread pitch
Ød2 = d - 0,5P
Ød3 = d - 2h3 = d - p - 2Ac
ac = thread root play
Ac = ac + 0,075P
(in the case of rolled thread)
h3 = 0,5P + Ac = 0,5P + ac + 0,075P
H3 = 0,5P + ac
ØD1 = d – P
ØD2 = d – 0,5P
ØD4 = d + 2ac
R1 max = 0,5ac
R2 max = ac