Tornado Screw 4 x 16 K73031290

The Screw 4 x 16, Handle (part# K73031290) is a genuine Tacony fastener used in the handle assembly of the Tornado Strike cordless upright and both Tornado EB 30/1 mini-sweepers. It is a small part with an outsized job: a handle that will not stay rigid makes a machine feel worn out long before anything expensive has actually failed. The Strike handle uses two of them, and they are the fasteners most often lost or damaged during a handle or wand repair.

Compatible Models for the Screw 4 x 16, Handle

• Tornado Strike TV190-W10-U cordless upright vacuum
• Tornado EB 30/1 Mini-Sweeper (93220)
• Tornado EB 30/1 Mini-Sweeper (93222)

Unlike most of the Strike handle hardware, this screw is not exclusive to one machine. Tacony’s parts records list part# K73031290 against three Tornado machines — the Strike cordless upright and both EB 30/1 mini-sweepers — so one order covers the handle hardware on all three. That is also why this listing carries no model name in its title: a model-specific title would be wrong on two of the three.

What the Screw 4 x 16, Handle does

This is a 4 mm diameter, 16 mm long self-tapping screw that clamps the handle sections together where the upper tube meets the handle body. Because the handle is what the operator pushes, pulls and leans on all day, these screws carry repeated bending load rather than a static clamp, and they are threading into a moulded plastic boss rather than into metal. The 16 mm length matters: the shorter and longer 4 mm screws used elsewhere on the same machines look identical at the head but will either fail to reach the boss or bottom out and split it, so length is not interchangeable here.

Signs the Screw 4 x 16, Handle needs replacing

The usual sign is play. The handle rocks, twists or clicks against the body when you change direction, and it gets worse over a few weeks rather than appearing all at once. Check the screws before you condemn the handle casting — a screw that has backed out, or one whose head has been chewed by a worn driver bit, is the cheapest possible cause of a wobbly handle. Replace rather than re-use any screw whose thread looks polished or flattened, because a self-tapping screw that has lost its cutting edge will never hold properly in the same boss again. Replace them as a set whenever the handle has been apart, so the joint is not clamped by one new screw and one tired one.

Fitting the Screw 4 x 16, Handle

Support the handle so it cannot drop while the fasteners are out, and back the screws out with a correctly sized bit turned slowly — a cam-out here rounds the head and turns a two-minute job into a drill-out. On reassembly, start each screw by hand and let it find the existing thread in the boss before you apply any torque; a self-tapping screw forced into a fresh path cuts a second thread and then holds in neither. Tighten to snug and stop. These thread into plastic, and the failure mode of over-tightening is a stripped boss in the handle, which is a far more expensive part than the screw.

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 Screw 4 x 16, Handle (part# K73031290) do?

It is the self-tapping screw that clamps the handle sections together at the joint between the upper tube and the handle body. The Strike uses two. They hold the handle rigid against the push, pull and twisting load of normal operation.

How do I know if my handle screws need replacing?

Play in the handle is the tell. If the handle rocks or clicks against the body and the movement has grown over time, pull the screws and look at them: a backed-out screw, a rounded head, or a thread that looks polished flat all mean the screw is no longer cutting and holding. Replace both at once rather than one.

What models is the Screw 4 x 16, Handle (part# K73031290) compatible with?

Three Tornado machines, per Tacony’s parts records: the Strike TV190-W10-U cordless upright, and both the 93220 and 93222 versions of the EB 30/1 mini-sweeper. It is the same handle screw in all three, which is why this listing is not titled to one model.

How do I order the Screw 4 x 16, Handle (part# K73031290) or get help?

You can add the Screw 4 x 16, Handle (part# K73031290) 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.