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Mechanical engineering tools: reference tables and calculators with checked data.
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Calculators
Solve joints and assemblies step by step, with the data of the standards.
- Bolted joint configuratorChoose the screw, nut and washers for a joint: the length to buy and the tools to use.
- Tightening torque and screw loadsCalculate the tightening torque and the preload of a screw following VDI 2230.
- PlannedTolerance stack-upAdd up the tolerances of the parts of an assembly and check that it fits.
Fasteners
Look up dimensions, variants and mechanical properties.
DIN912ISO 4762Socket head screw, hex drive
DIN934ISO 4032Hexagon nut, regular
DIN125-AISO 7089Plain washer, normal series
DIN933ISO 4017Hexagon head screw, fully threaded
DIN965ISO 7046-1Countersunk head screw, cross recess
DIN7984Low socket head screw, hex drive
DIN7991Countersunk head screw, hex drive
ISO14579Socket head screw, Torx drive
ISO14581Countersunk head screw, Torx drive
ISO14583Pan head screw, Torx drive
DIN985ISO 10511Hexagon lock nut, nylon insert
DIN433ISO 7092Plain washer, small series
DIN9021ISO 7093-1Plain washer, large series