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If customers ask for other hex, thred or length, and the quantity is profitable, we can produce. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Product Code Example:IS14HH415 = IS14HH4.. ![]() |
This information is applicable to following articles:
High Voltage Insulator MI, Polystyrol HEX knob IS and Polystyrol HEX knob ISS, ISK, ISD
Torque chart | |
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recommended values - indicative only | |
Bolt size | Grade 4,8 |
M | Torque Nm |
M4 | 1,5 |
M5 | 3,0 |
M6 | 5,1 |
M8 | 12 |
M10 | 25 |
M12 | 43 |
M14 | 68 |
M16 | 105 |
M18 | 145 |
M20 | 205 |
M22 | 275 |
M24 | 350 |
Recommended max. tightening torque in Nm for untreated oil-smeared screws. Friction coefficient µ=0.125, torque corresponds to approx. 62% of tensile bolt stress. Friction coefficient µ=0.14, torque corresponds to approx. 90% of tensile bolt stress. Every bolted joint is unique and the optimum tightening torque should be determined for each application by careful examination. A properly tightened bolt is one that is stretched such that it acts like a very ridged spring pulling mating surfaces together. The rotation of a bolt (torque) at some point causes it to stretch (tension). Several factors affect how much tension occurs when a given amount of tightening torque is applied.
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