Countersunk Washer X8020
$2.99
Genuine Tacony OEM countersunk washer (part# X8020) for the Tornado Marathon SE 900 (Model 98170) and Powr-Flite Prowler PFX900S chassis. Gives a flat-head screw the cone it needs when the part underneath has none.
The Countersunk Washer (part# X8020) is a genuine Tacony OEM replacement part from the chassis assembly of the Tornado Marathon SE 900 self-contained carpet extractor. It is the conical washer that provides a countersunk seat for a flat-head fastener on a flat surface.
What the Countersunk Washer does
A flat-head screw only clamps properly when its cone is bearing on a matching cone. Drive one against a flat panel and it bears on a knife edge, which either digs in and loosens as the metal yields, or sits proud so the head is never really seated. This washer supplies that cone, and it also centres the screw in an oversized or slotted hole so the joint ends up where it was meant to be.
When to replace the Countersunk Washer (X8020)
Replace it when the cone is deformed, when it has cracked or split at the bore, or when the surface is corroded and pitted. If a flat-head screw in this position keeps working loose, look at the washer before assuming the screw is at fault.
Countersunk Washer X8020 — fitment and installation notes
Fit it cone-up so the screw head nests in it, since fitted the other way it does nothing useful and holds the head off the surface. Match it to the head angle rather than using any dished washer that fits the shank, and check the panel underneath for the beginnings of a dimple where an unsupported head has been bearing. Tacony builds the Tornado Marathon SE 900 and the Powr-Flite Prowler PFX900S on a single machine platform, so this component carries across both brands rather than belonging to either one. It is a shared Tacony component and may fit additional models beyond those listed — call us and we will confirm against your serial number.
Compatible Models for the Countersunk Washer
- Tornado Marathon SE 900 — Model 98170
- Powr-Flite Prowler PFX900S
- Powr-Flite PFX900SG
Twin City Vacuum has been selling and servicing commercial floor-care equipment since 1956 from 5415 West Broadway, Crystal, MN 55428. We stock genuine Tacony parts and ship nationwide. Browse the full Tornado 98170 parts catalogue, or see the manufacturer at tornadovac.com.
Frequently Asked Questions
What does the Countersunk Washer do on the Tornado Marathon SE 900?
A flat-head screw only clamps properly when its cone is bearing on a matching cone. Drive one against a flat panel and it bears on a knife edge, which either digs in and loosens as the metal yields, or sits proud so the head is never really seated. This washer supplies that cone, and it also centres the screw in an oversized or slotted hole so the joint ends up where it was meant to be.
How do I know if my Countersunk Washer needs replacing?
Replace it when the cone is deformed, when it has cracked or split at the bore, or when the surface is corroded and pitted. If a flat-head screw in this position keeps working loose, look at the washer before assuming the screw is at fault.
What models is the Countersunk Washer (part# X8020) compatible with?
The Tornado Marathon SE 900 (Model 98170), the Powr-Flite Prowler PFX900S and the PFX900SG. It is a shared Tacony part and may fit further models; call us to confirm.
How do I order the Countersunk Washer (part# X8020) or get help?
You can add the Countersunk Washer (part# X8020) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.
