UnitedBuilt M10220MS 7/8-9 RH Impeller Lock Nut — UnitedBuilt Equipment Skip to content
Quality Water Truck Systems, Tanks & Parts Since 1947
Quality Water Truck Systems, Tanks & Parts Since 1947
Lock Nut 7/8 - 9 RH, Stainless Steel, UnitedBuilt M10220 - UnitedBuilt Equipment

Impeller Lock Nut, 7/8-9 RH, Stainless Steel, UnitedBuilt M10220MS

SKU 0003146
Brand UnitedBuilt
Availability:
36 in stock | Available on backorder
$0.00 - $0.00
$0.00
$12.75
$12.75 - $12.75
$12.75

Product Images

Images are for representation only and may differ from the actual product.

Questions about this product?

The UnitedBuilt M10220MS impeller lock nut is a 7/8-9 right-hand-thread stainless steel replacement for the clockwise (CW) M3Z pump configuration. It secures the impeller at the threaded end of the matching shaft assembly.

Thread direction is a critical ordering detail. Select this RH nut for the matching CW assembly; a nut with the same nominal diameter but the opposite thread direction is not interchangeable. Confirm both the shaft thread and pump rotation before ordering.

Technical specifications

Specification Detail
Manufacturer UnitedBuilt
Current part number M10220MS
Catalog reference M10220
Thread 7/8-9 RH
Material Stainless steel
Pump rotation Clockwise (CW)

Matching pump and shaft assemblies

Application Selection
M3ZRM rope-packing shaft kit B80698MS; pump B66899MS
M3ZRMS mechanical-seal shaft kit B80699MS; pump B68417MS

This is the individual impeller nut, not a complete shaft kit. The impeller, shaft, sleeve, bearings, and retaining rings are separate components. If you are replacing more than the nut, check the existing assembly before deciding between individual service parts and a shaft kit.

Before ordering

Check What to confirm
Thread hand 7/8-9 RH; do not select solely by outside appearance.
Pump configuration Confirm the exact CW pump and shaft-kit model.
Installation Follow the pump service procedure; do not substitute an assumed tightening torque.

Need help confirming the correct impeller nut? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your pump model, existing nut number, or photos of the shaft threads.