Screw #8-32 x 1/2 inch X8278

The Screw X8278 is a genuine Tacony OEM #8-32 x 1/2 inch pan head machine screw in black zinc, used as a general assembly fastener throughout the Tornado and Powr-Flite commercial range. On the Tornado Pac-Vac 6 Aircomfort 93012B the factory parts book lists two of them under Not Shown — they fasten a part of the assembly that is hidden at the angle the exploded diagram is drawn from, which is a normal parts-book convention rather than an omission.

It is a small part with an outsized nuisance value when it goes missing. Because it is a machine screw rather than a self-tapper, thread, length and head type all have to match: a longer screw can foul or pierce whatever sits behind the panel, and a countersunk head will not seat in a hole drilled for a pan head. The black zinc finish matters too wherever the screw ends up on a visible surface of a machine that gets used in front of customers. Replace any screw with a chewed head, a damaged thread, or white corrosion on the plating rather than fighting it at the next service.

Compatible Models for the Screw X8278

• Tornado: Pac-Vac 6 Aircomfort — Model 93012B (two per machine, listed under Not Shown)

The Tacony factory cross-reference lists the Screw X8278 in use across 42 assemblies in the wider Tornado and Powr-Flite ranges, including the Marathon box extractors and the Surge and Pulsar tank, pump and component assemblies. We have listed only the model this page was built from rather than publish a model list we have not individually verified — if you have found this part number in another machine’s parts book, it is the same screw. Call us at 763-535-0770 and we will confirm it against your model and serial number.

Fitting notes

Use a correctly sized Phillips driver and stop as soon as the panel is clamped — this thread is into metal or a moulded boss, and over-torquing either strips the boss or shears the screw, which turns a two-minute job into an extraction. If you are opening a Pac-Vac for other work it is worth having a couple of these on the shelf, because the two on this machine are the ones most likely to be dropped into the body and never seen again. Twin City Vacuum has been selling and servicing Tornado and Powr-Flite equipment since 1956 and stocks the full Tacony hardware range. Browse the rest of the Tornado Pac-Vac Aircomfort parts range, or find machine specifications at tornadovac.com.

Frequently Asked Questions

What does the Screw (part# X8278) do?

It is a #8-32 x 1/2 inch black zinc pan head machine screw. Tacony uses it as a general assembly fastener right across its commercial range – it appears in backpack vacuum bodies and in the tank, pump and box assemblies of the Marathon, Surge and Pulsar extractors. On the Tornado Pac-Vac 6 Aircomfort 93012B the parts book lists two, under Not Shown.

Why is this screw listed as Not Shown on the Pac-Vac diagram?

Because it fastens something that is hidden at the angle the exploded diagram is drawn from, so the factory lists the part and quantity without a numbered callout. It is a normal parts-book convention, not an error – the two screws are genuinely part of the machine.

What models is the Screw (part# X8278) compatible with?

Tornado Pac-Vac 6 Aircomfort 93012B is the model this listing is built from. The factory cross-reference shows X8278 in use across 42 assemblies in the wider Tornado and Powr-Flite ranges, including Marathon box extractors and Surge and Pulsar tank assemblies, so if you have found this number in another machine’s parts book it is the same screw. Call 763-535-0770 and we will confirm it against your model.

Can I use a hardware store screw instead?

You can, but check three things first: thread (#8-32), length (1/2 inch) and head type (pan head). Substituting a longer screw is the common mistake and it can foul or pierce whatever sits behind the panel. The black zinc finish also matters where the screw is visible on a customer-facing surface.

How do I order the Screw (part# X8278) or get help?

You can add the Screw (part# X8278) 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 and Powr-Flite 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.