Wurth katalog proizvoda

MWF - 06/02 - 03535 - © • Lock Washers DIN 7980 for cheese head and Allen screws (DIN 84, 85, 912). Square bar steel Bare steel Galvanized steel, blue passivated Suitable only for screws of strength class ≤ 5.8 . You should use detent edged disks in conjunction with higher strength classes! Lock washers DIN 7980 differ from DIN 127 with their smaller outside diameter – they therefore go with the small head of the cheese head and Allen screws (DIN 84, 85, 912) and are especially well suited for countersinking the screw. l Lock washers are screw fasteners that preserve the function of the screw connection no matter how long the stress acts. l The effect is achieved through axial spring force. l The lock washers press the nut’s thread firmly against the bolt thread and thereby increase the friction resistance. l Lock washers clamp the nuts with the workpiece. This makes it more difficult for the nuts to loosen and prevents the bolt from coming loose as a result of external influences (vibrations etc.). l Using the lock washer offsets the decrease in tension in the thread of the individual screw connection parts. l If the lock washer were not used, a screw connection would loosen if the bracing force decreased. Thread d 1 s w Bare steel P. Qty. Galv. steel, P. Qty. dia. blue pass. in mm in mm in mm Art. No. Art. No. M 3 3.1 1 1 044303 500 04433 M 4 4.1 1.2 1.2 044304 100 04434 100/1000 M 5 5.1 1.6 1.6 044305 04435 M 6 6.1 1.6 1.6 044306 100/1000 04436 100/500/1000 M 8 8.1 2 2 044308 04438 M 10 10.2 2.5 2.5 0443010 100/500 044310 100/500 M 12 12.2 2.5 2.5 0443012 044312 M 14 14.2 3 3 0443014 044314 M 16 16.2 3.5 3.5 0443016 100 044316 100 M 18 18.2 3.5 3.5 0443018 044318 M 20 20.2 4.5 4.5 0443020 044320 OK-00410