Non Concentric Bolt Slot Drive Carbon Steel Manufacturer

Non concentric bolt means the thread of one part of the bolt is non concentric with the head, it usually used on electrical machines or some other equipment. A nonconcentric bolt should be called an eccentric bolt. is used in automotive applications as an adjustment for 4 wheel alignments. The head of the nonconcentric bolt can be turned with a wrench or a socket like a conventional bolt. Below the head of the bolt but before the shank, there is a flange that is not centered. It is offset. Shaped like a camshaft lobe. Along the shank of the bolt, there is a groove or keyway where a concentric was her mate, and finally a nut is threaded on to keep pressure against the concentric washer and keep the bolt tight. The bolt is held with one wrench and the nut is loosened. The bolt head is turned and the flange turns like a cam lobe. As well as the washer. The flange and washer are in close tolerance of touching guides on either side of the flange and washer. So as the flange of the bolt and the matching washer turn they move a component like a lower control arm. This movement is limited but can change angles of suspension components for fine-tuning Caster and Camber front and rear and toe on the rear axle of a 4 wheel vehicle. The first image is a concentric bolt and the matching washer. The lines stamped are graduated with degrees or half degrees. But it is best to adjust these when a laser alignment system is connected with live readings. The second image is the concentric bolt turned to its maximum position. Once past the max position, the adjust begins to go back from the furthest position. The second picture shows how the bolt head sits between two metal channels welded to the lower control arm. The aluminum colored knuckle is what will move. Not the lower control arm. Ever Hardware provides custom-made fasteners and customizable packaging.
If suspension systems are dramatically altered or a severe collision has occurred, other components will need to be replaced to achieve the original or desired specifications. The adjustment is limited in range.