Tornado Nut 19145

Part number 19145 is a genuine OEM nut used very widely across the same range. Because the manufacturer description for this part is simply “Nut”, the most useful thing this page can do is tell you how to be certain it is the one you need. It also fits the Tornado 98166 20″ Marathon 800 carpet extractor (8 Gallon, 115V). It also fits the Tornado 98167 20″ Marathon 800 carpet extractor (8 Gallon, 230V).

Compatible Models for the Nut

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.
• Tornado 98166 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98167 20″ Marathon 800 (8 Gallon, 230V)

Measure the old one before ordering. Thread diameter and pitch are what identify a nut, and neither is reliably guessable by eye — a 5/16 and a 3/8 look similar in the hand, and a coarse and a fine thread of the same diameter look identical until you count the turns. A thread gauge takes a moment; failing that, take the mating bolt to the counter with it.

Note the height too. A full-height finished hex nut, a thin jam nut and a heavy nut are all different parts, and substituting one for another gives a joint that assembles correctly and fails under load. If the nut you removed is noticeably thinner than a standard nut of that thread, it is a jam nut and should be replaced with one.

Note the material and finish. Stainless, zinc plated and nickel plated are chosen for different reasons, and mixing them in a wet, detergent-rich machine causes galvanic corrosion at the junction. Where a nut has been specified in stainless it is usually because the position stays wet.

Because the description is generic and this fastener appears in many places, call us on 763-535-0770 with your model and serial number and the measurements, and we will confirm which nut is correct for the position rather than leaving you to match it from a diagram.

Whatever the size, fit with clean threads to a firm rather than maximum torque, with a new lock washer wherever one is specified. A reused lock washer has spent its spring and the joint will work loose whatever nut is on it.

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 nut 19145 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 It also fits the Tornado 98167 Marathon 800 (8 Gallon, 230V).

How do I make sure I order the right nut?

Measure the old one. Thread diameter and pitch identify a nut and neither is reliably guessable — a 5/16 and a 3/8 look alike in the hand, and coarse and fine threads of the same diameter look identical until you count the turns. Take the mating bolt with you if you have no thread gauge, and note the height as well.

Does the height of a nut matter?

Yes. A full-height finished hex nut, a thin jam nut and a heavy nut are different parts. Substituting one for another gives a joint that assembles perfectly and fails under load. If the nut you removed is noticeably thinner than standard for its thread, it is a jam nut and needs replacing with one.

How do I order the Nut (part# 19145) or get help?

You can add the Nut (part# 19145) 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.