Screw 10-32 x 7/8″ X9135
$2.99
Genuine Tacony OEM 10-32 x 7/8 inch screw (part# X9135) used in the Tornado Marathon SE 900 (Model 98170) and Powr-Flite Prowler PFX900S. A machine thread, so it belongs in a tapped hole or a nut, not a plastic boss.
The Screw 10-32 x 7/8″ (part# X9135) is a genuine Tacony OEM replacement part from the recovery and solution tank assembly of the Tornado Marathon SE 900 self-contained carpet extractor. It is the specified 10-32 machine screw of 7/8 inch length used at fastening points on the machine.
What the Screw 10-32 x 7/8″ does
The 10-32 thread is a fine machine thread, which is what you want where a screw goes into metal or takes a nut and has to hold torque without loosening. Its fine pitch gives more thread engagement per inch than a coarse thread of the same diameter, so it resists vibration well, and it is also why it strips easily if it is ever started crooked.
When to replace the Screw 10-32 x 7/8″ (X9135)
Replace it when the drive is rounded, the thread is damaged or galled, or corrosion has locked it. Also replace rather than reuse any screw that had to be driven out, since the thread has almost certainly been dragged.
Screw X9135 — fitment and installation notes
Start it by hand and feel it pick up the existing thread before reaching for a driver, because a fine thread cross-threads readily. Do not substitute a coarse 10-24 screw of the same length; it will feel like it is tightening while it destroys the tapped hole. Tacony builds the Tornado Marathon SE 900 and the Powr-Flite Prowler PFX900S on a single machine platform, so this component carries across both brands rather than belonging to either one. It is a shared Tacony component and may fit additional models beyond those listed — call us and we will confirm against your serial number.
Compatible Models for the Screw 10-32 x 7/8″
- Tornado Marathon SE 900 — Model 98170
- Powr-Flite Prowler PFX900S
- Powr-Flite PFX900SG
Twin City Vacuum has been selling and servicing commercial floor-care equipment since 1956 from 5415 West Broadway, Crystal, MN 55428. We stock genuine Tacony parts and ship nationwide. Browse the full Tornado 98170 parts catalogue, or see the manufacturer at tornadovac.com.
Frequently Asked Questions
What does the Screw 10-32 x 7/8″ do on the Tornado Marathon SE 900?
The 10-32 thread is a fine machine thread, which is what you want where a screw goes into metal or takes a nut and has to hold torque without loosening. Its fine pitch gives more thread engagement per inch than a coarse thread of the same diameter, so it resists vibration well, and it is also why it strips easily if it is ever started crooked.
How do I know if my Screw 10-32 x 7/8″ needs replacing?
Replace it when the drive is rounded, the thread is damaged or galled, or corrosion has locked it. Also replace rather than reuse any screw that had to be driven out, since the thread has almost certainly been dragged.
What models is the Screw 10-32 x 7/8″ (part# X9135) compatible with?
The Tornado Marathon SE 900 (Model 98170), the Powr-Flite Prowler PFX900S and the PFX900SG. It is a shared Tacony part and may fit further models; call us to confirm.
How do I order the Screw 10-32 x 7/8″ (part# X9135) or get help?
You can add the Screw 10-32 x 7/8″ (part# X9135) 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.





