Chainsaw bar nuts usually require regular replacement, and this set of four Husqvarna chainsaw bar nuts makes a perfect option for doing so. They're manufactured by Husqvarna on the same equipment that made the originals, so you can rest easy knowing that they'll be a perfect fit. Note: They'll fit on all Husqvarna chainsaws except for the Electric 316. | Husqvarna Chainsaw Bar Nuts 4 Pack