Tornado Tempest Caster Screw M10 x 45 K73031730

This is the M10 x 45 screw that holds the swivel caster to the front of the Tornado Tempest. Tacony records it as a saucer head screw and names it on the dealer system as Screw M10x45, Castor, which is what separates it from the other M10 hardware used on the fixing straps elsewhere on the machine.

What the Caster Screw M10 x 45 Does

It is the single fastener carrying the front load of the sweeper. The saucer head sits flush so it cannot catch on carpet, and the M10 shank takes the shear load every time the machine is pivoted on the caster. Everything about the front ride height depends on this screw being the right length and properly tightened.

Where It Sits on the Machine

It passes down through the reinforcement plate, the washer gasket and the caster mount under the front of the bottom housing on the Tempest handle and frame diagram, with a nut underneath.

Compatible Models for the Caster Screw M10 x 45

• Tornado Tempest Wide-Area Cordless Carpet Vacuum Sweeper — Model TV400-W26-U

When to Replace It

Replace the screw if the head is rounded, the thread is damaged, or it has been bent by an impact. Anything that has been running loose is worth replacing rather than re-tightening, because a screw that has worked in its hole will have worn on the shank. Fit a new nut at the same time.

Fitting Notes

Do not substitute a shorter or longer M10 screw. The length is what lets the nut engage fully while the saucer head still sits flush, and a screw that is too long will stand proud underneath where it can catch carpet. Tighten firmly, then check the caster still swivels freely before putting the machine back to work.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. Browse the full Tornado Tempest parts range, or see the Tornado Tempest TV400-W26-U machine. Manufacturer information is at tornadovac.com.

Frequently Asked Questions

Is this the same M10 screw used on the fixing straps?

No. Tacony lists the strap screw as a separate part number with a different length. K73031730 is the M10 x 45 saucer head screw specific to the caster mount. If you are unsure which you are holding, call us with the part number and we will confirm it.

Can I reuse the old nut?

If it is in good condition and still has proper thread engagement, yes — but this is a joint that carries the front load of the machine, so if there is any doubt fit a new one. The caster nut is a separate part number on the same diagram and costs very little.

How do I order the Caster Screw M10 x 45 (part# K73031730) or get help?

Order the Caster Screw M10 x 45 right here on this page, or call Twin City Vacuum at 763-535-0770 and give us part number K73031730. We have been a Tornado dealer since 1956, we stock Tempest parts, and we can confirm the part against your machine before it ships. You can also visit the store at 5415 West Broadway, Crystal, MN 55428.

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