Electric clavis est in potentia copia vel altilium Powereds claru, est instrumentum quod est ad obstringere fulmine. Maxime usus est in Steel structuram installation industria, specialis installation of ferro structuram princeps viribus fulmine, princeps vires fulmine adhibetur ad coniungere ferro structuram contactus, plerumque cum seras. Aequaliter quasi vires mollis et clavis. Definitely don't want to pull (with short, impulse force, because yank will produce an impulse, at the moment stop hard, screw or bolt may have turned her head. And pollutants can interfere with accurate torque value. If there are pollutants parts and screw hole, will not be able to have the correct torque value. , friction is a widespread phenomenon, but there are good and bad two aspects. The good thing is make the parts stay together; The bad aspect is, when tightened, it may lead to wrong result. A mechanic hand tight coupling force only % -% is used to tighten, and in many cases, there is % -% of torque is used to overcome the friction between bolt head and parts, along the bolt and screw hole spouse also generate additional thread surface friction. Therefore, when tightening bolts, should put all of the friction factor and other factors are taken into account. , on the screw thread damage aut dysfunctione nut vel fulmine, operam debet solvit ut per injuriam opus est quanto additional torque, hoc additional torque ad suadeo torque values.