Screw 10-24 x 1 in A090-0400

The Screw 10-24 x 1 in (part# A090-0400) is the machine screw used on the Tornado CK-LW 13/1 ProLite, models 97130 (115V) and 97131 (230V), and on the Powr-Flite PF62EC.

This one is different in kind from the other fasteners on the breakdown. 10-24 is a machine thread — number 10 diameter, 24 threads per inch — which means it is designed to run into a nut rather than to cut its own thread in plastic. Its partner is the nyloc nut, part number A090-0500, and the pair are ordered together.

Compatible Models

• Tornado CK-LW 13/1 ProLite, model 97130 (115V)
• Tornado CK-LW 13/1 ProLite, model 97131 (230V)
• Powr-Flite PF62EC

Why the pairing matters

A machine screw and a locking nut are specified where a joint has to survive vibration without a thread-cutting fastener chewing its way loose. Fit a self-tapping screw in that hole instead and it will hold for a while, cut the hole oversize as it works, and then fail in a way that also takes the hole with it. The nut is what makes the joint serviceable: it can be undone and redone without degrading anything.

Replace the nyloc nut whenever this screw is removed. The nylon insert is a one-use locking feature — once the thread has cut its path through the nylon, a reused nut no longer grips the way the design assumes.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. Call 763-535-0770 with your model and serial number and we will confirm the part before you order.

Frequently Asked Questions

Which machines does this screw fit?

The Tornado CK-LW 13/1 ProLite, models 97130 and 97131, and the Powr-Flite PF62EC.

What does 10-24 mean?

Number 10 diameter with 24 threads per inch. It is a machine thread, so it runs into a nut rather than cutting its own thread in plastic.

Does the nut come with it?

No. The nyloc nut is part number A090-0500 and is ordered separately. Fit a new one whenever the screw is removed.