Tornado Washer Plain .328″ I.D. Stainless 19191

A washer is identified by its inside diameter, and this one is .328 inch — the clearance size for a 5/16 fastener. Part number 19191 is the genuine OEM plain washer in stainless. This machine uses plain washers at several different inside diameters, so the number is what identifies it, not the appearance.

Compatible Models for the Washer Plain .328″ I.D. Stainless

This part is shared across a wide run of machines. On the Marathon 1200 family it is fitted to:

• Tornado 98168 12 Gallon Self Contained Carpet Extractor
• Tornado 98168 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V) — all series
• Tornado 98169 20″ Marathon 1200 Carpet Extractor (12 Gallon, 230V)
• Fits many other machines — call 763-535-0770 and we will confirm fitment for your machine.

The job of a plain washer is to spread the clamping load of the fastener head over a wider area and to give it a clean surface to turn against. On this machine many fasteners land in moulded plastic or thin sheet, where a head pulled directly against the material digs in, beds down over a few weeks and then is loose. A joint that keeps needing retightening in the same place is usually missing a washer rather than needing thread-lock.

Fit is more critical than it looks. A washer whose bore is too large contacts the material on a narrower ring and defeats the point; one whose bore is too small will not sit flat against the shoulder of the fastener. .328 is specifically the clearance for 5/16, and a 1/4 or 3/8 washer in its place is the wrong part however similar it looks in the hand.

Replace rather than reuse if it is dished or discoloured. An over-torqued washer takes a permanent cup and then contacts on its edge rather than its face — the opposite of its purpose. Heat discolouration means the joint has been running warm, which on an electrical fixing is worth investigating before reassembling.

Stainless here means the position stays wet. Do not substitute a plated washer into a stainless joint: dissimilar metals in detergent corrode galvanically at the junction and the softer one loses.

Order a handful. Washers are the parts that vanish during a strip-down and hold up a job overnight.

Browse every assembly for this machine on the Tornado 98168 Marathon 1200 parts hub, and see the manufacturer’s range at tornadovac.com.

Frequently Asked Questions

What machines does the washer 19191 fit?

It is fitted to the Tornado 98168 12 Gallon Self Contained carpet extractor and the 98168 20″ Marathon 1200 in all series, and it is shared across many other machines. Call 763-535-0770 with your model and serial number and we will confirm fitment before you order.

How do I know this is the right washer?

By its inside diameter. .328 inch is the clearance size for a 5/16 fastener, and this machine uses plain washers at several different inside diameters that look alike in the hand. Measure the bore of the old one rather than matching by eye.

A fastener keeps working loose — do I need thread-lock?

Check for a missing washer first. Many fasteners here land in moulded plastic or thin sheet, and a head pulled directly against either digs in, beds down over a few weeks and goes loose. Washers also fall off during a strip-down and are not missed.

How do I order the Washer Plain .328″ I.D. Stainless (part# 19191) or get help?

You can add the Washer Plain .328″ I.D. Stainless (part# 19191) 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.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.