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.

OTC · Tools & Supplies
210.OT1914
In stock · ships from Knoxville
This is a 4-inch, 6-point locknut socket for heavy-duty truck and trailer wheel bearing adjustment.
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 common axle locknut sizes on Class 8 trucks and trailers; no vehicle-specific application list is provided, as it is a universal tool.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 9 of 9.
Different year, make, or config? Get a confirmation against your truck in under a minute.
Designed for manual use only (3/4-inch square drive breaker bar or ratchet), it removes or tightens the large hex locknuts found on truck axle spindles. Using it with an impact wrench can damage the socket and void its warranty. It's typically replaced when the hex opening becomes worn, rounded, or cracked from heavy use or improper tool application.
Part Number: 210.OT1914
SOCKET WRENCH 4 6PT OTC
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more