Screw 4x12-Tapping

This is an OEM quality chain tensioner for a chainsaw. This part is attached to the adjustment screw and fits into an opening on the bar. When you turn the adjuster it moves the tensioner, which either tightens or loosen...

This chain adjustment tensioner bolt (bar adjustment bolt) is sold individually. The bar adjustment bolt works with the adjuster gears and the adjustment pin to alter the tension on the cutting chain. The gears rotate th...