Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Automann · Tools & Supplies
210.1940
In stock · ships from Knoxville
This 4-1/8 inch, 8-point spindle nut socket wrench with a 3/4 inch square drive is designed for removing and installing the large locknuts found on heavy-duty truck and trailer wheel ends.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Fits any make/model using a spindle nut with a 4-1/8 inch width across flats (common on many Class 8 trucks and trailers). Verify your locknut measurement before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 5 of 5.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It is used during wheel bearing service, brake work, or axle maintenance to torque or loosen the nuts that secure the wheel hub assembly. Mechanics reach for this specialty socket whenever wheel end locknuts of this size need to be removed or torqued. Please note this socket is intended for use with manual tools only; impact wrench use is not recommended and will void the warranty.
Part Number: 210.1940
SOCKET WRENCH 4-1/8 8 POINT
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more