Tornado Strike Square Nut M4, Handle K73115690

The M4 Square Nut (part# K73115690) is the captive nut that sits in a moulded pocket inside the Tornado Strike’s handle and receives the clamping screw. Square rather than hexagonal so the pocket holds it against rotation while the screw is driven.

Compatible Models for the Square Nut M4, Handle

• Tornado Strike Cordless Upright Vacuum — Model TV190-W10-U

This is a Strike-only component: Tacony’s parts records list the Tornado Strike TV190-W10-U as the single machine that takes part# K73115690, so there is no cross-model substitution to worry about when you order it.

What the Square Nut M4, Handle does

The whole point of a captive nut is that one hand can do the job. The pocket stops the nut turning, so the technician only has to drive the screw — which matters when the other side of the joint is inside a closed handle. It also puts a proper metal thread into a plastic assembly, giving the handle joint a service life measured in many disassemblies rather than two or three.

Signs the Square Nut M4, Handle needs replacing

Replace it when its thread is stripped, crossed or rusted, when the nut spins in its pocket so the screw will not tighten, or when the nut has been deformed by overtightening. If the screw tightens and then goes slack again after a short time in service, the nut has usually pulled into the plastic and both parts should be changed together.

Fitting the Square Nut M4, Handle

Drop the nut into its pocket with the handle open and check it sits flat and square before the halves go together — a nut sitting proud stops the joint closing and cracks the shell when the screw is tightened. Hold it in place as the screw is started, then tighten to firm only. Always fit a new screw alongside a new nut.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. You can browse the rest of the machine on our Tornado Strike parts pages, and the manufacturer publishes specifications at tornadovac.com.

Frequently Asked Questions

What does the Square Nut do on the Tornado Strike handle?

It is the captive nut in a moulded pocket inside the handle that receives the clamping screw. Being square, the pocket stops it rotating so the screw can be driven from one side.

How do I know if my Square Nut needs replacing?

A stripped, crossed or rusted thread, a nut that spins in its pocket so the screw will not tighten, or one deformed by overtightening. A joint that goes slack shortly after being tightened usually means the nut has pulled into the plastic.

What models is the Square Nut M4, Handle (part# K73115690) compatible with?

The Tornado Strike TV190-W10-U cordless upright vacuum, and only that machine. Tacony’s parts records list no other model that takes part# K73115690.

How do I order the Square Nut M4, Handle (part# K73115690) or get help?

You can add the Square Nut M4, Handle (part# K73115690) 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.