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Types of nut units

The range is enlarged by the offer of non-standard connecting dimensions of nuts. Both nuts and screws can be manufactured according to the requirements of the customer.

The profile of the thread is produced in compliance with the standards ISO 2901- 77, ISO 2902-77, ISO 2903-77 and ISO 2904-77 or with the corresponding ČSN 01 4050.

Shafts are usually made from steel grade 54SiCr6 and CF53. The standard performance of the shaft is without heat treatment.

The nuts can be made from cast iron with grade 422425, from tin bronze Cu – Sn12, or from plated steel (steel shell, plated with bronze Cu – Sn12). Technical consultation and delivery of the plated steel material is needed in the case of plated nut design.

Description and meaning of used symbols

TRAPEZOIDAL THREAD UNDER ČSN 01 4050 (mm) NUT WITH FLANGE (mm) CYLINDRICAL NUT (mm)
Tr dxPdPd2d3H1LMAXD1D4D56xD6L1L2L3DC
Tr 16x416414,011,52,05002848386441283624
Tr 18x418416,013,52,050028483864412845 30
Tr 20x420418,015,52,080032554574412845 30
Tr 22x522519,516,52,5800325545744128 45 33
Tr 24x524521,518,52,51 25032554574412850 36
Tr 26x526523,520,52,51 25035554574412850 39
Tr 28x528525,522,52,51 25038624874614860 42
Tr 30x630627,023,03,01 25038625074614860 45
Tr 32x632629,025,03,01 250406454750161060 48
Tr 36x636633,029,03,02 000457058759161075 54
Tr 40x740736,532,03,52 000639578973161080 60
Tr 44x744740,536,03,53 15072110931173161080 66
Tr 48x848844,039,04,03 15075110931197161090 72
Tr 50x850846,041,04,04 00075110931197181090 75
Tr 50x12501244,037,06,04 000751109311130181090 125
Tr 60x960955,550,04,54 00090125108111001812100 90
Tr 70x10701065,059,05,05 000105145125131202014110 105
Tr 80x10801075,069,05,05 000105145125131202014120 120
 
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