This goes into a lot of places like the actuator, tilt cover, & knob adjustment points.

We sell over 100 different used parts. If you want to figure out what is wrong with your chair, and how to fix it, buy our twenty minute diagnosis via email, text, video or call for $20.00, purchase at this link, https://www.ebay.com/itm/255193158645

If you are in Florida we might be able to come to your location and repair your chair for you, if you are interested please ask us for a quote, so we can let you know how much it will cost.

Please let us know if you have any questions.

This is pre-owned, shows wear, but ready to be put to work on your chair.

There is another bolt with a tighter thread the Herman Miller used in that area, see last two photos.

This is for one Phillips heads screw that is 10mm wide, the threads are 5mm wide, the length is 19mm, these hold on the tilt cover, height actuator, the area that knobs attach, and other places. It fits the size A, B and C chairs and are genuine OEM pieces for the Aeron office furniture line by Herman Miller.

If you want multiple parts we can combine shipping.