Tornado Tempest Screw M5 x 12 K73063940

The Tornado Tempest screw M5 x 12 (part# K73063940) is the M5 x 12 machine screw used on the battery housing and controls assembly of the TV400-W26-U cordless sweeper, with two fitted on the machine. The Tempest uses a wide range of M5 fasteners at different lengths, and length is what distinguishes them — an M5 x 20 (part# K73031080) or an M5 x 16 will thread into the same hole and hold quite differently.

Screw length is not an interchangeable detail on a machine built from plastic mouldings and steel brackets. Too long and the screw bottoms in a blind boss before it clamps, leaving the joint loose while feeling tight on the driver. Too short and it engages too few threads to hold against the vibration of a brushroll and blower running together. Both faults present the same way: a fastener that keeps coming loose.

Compatible Models for the Screw M5 x 12

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

When to replace it

• The thread is stripped, crossed or galled from a previous repair.
• The drive recess is rounded out.
• The screw has corroded into its boss.
• A non-standard fastener was substituted and the joint will not clamp.
• The assembly has been dismantled — these are inexpensive and worth renewing.

Fitting notes

Remove the battery pack before working in the control area. Drive the screw square and stop as soon as the joint is clamped — over-torquing an M5 into a moulded boss splits the boss, which turns a fifty-cent problem into a housing replacement. If the boss is already stripped, fit the correct screw into a repaired boss rather than a longer screw into a damaged one.

On pricing: Tacony does not currently list part# K73063940 in the dealer catalogue, so we do not publish a price for it rather than estimate one. Call 763-535-0770 and we will source it and quote you.

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

What does this screw do on the Tornado Tempest?

It clamps components on the battery housing and controls assembly. Two are fitted on the machine.

How do I know if this screw needs replacing?

If the thread is stripped or crossed, the drive recess is rounded, it has corroded into its boss, or a previous repair substituted a non-standard fastener. Renew it whenever the assembly has been apart.

What models is this screw (part# K73063940) compatible with?

The Tornado Tempest TV400-W26-U wide-area cordless carpet sweeper. PartSmart lists it against the Tempest alone.

Can I use a longer M5 screw instead?

We would not recommend it. A longer screw can bottom in a blind boss before the joint clamps — it feels tight on the driver while the joint stays loose. Use the specified M5 x 12.

How do I order the screw (part# K73063940) or get help?

You can add the screw (part# K73063940) 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.