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LIPPERT

Castle Nut – For 10K Axles | LPT
SKU: 10-SN-LPT
$11.00 USD $11.00 USD
Shipping calculated at checkout.
In stock
Description

This 6-slot castle nut is designed for 10,000 lb Lippert axles, providing a secure and stable locking mechanism for trailer spindle assemblies. Engineered with fine threads and a heavy-duty profile, it ensures durability and long-lasting performance under high load conditions.

Detailed Information:
Axle Capacity 10,000 lbs
Thread Size 1-1/2" – 12 TPI
Hex Size 2-1/4"
Height 1-1/4"
Type 6-Slot Castle Nut
Fitting:

Fits Lippert 10K axle spindles with 1-1/2"-12 threads. Commonly used to secure bearing assemblies on heavy-duty trailer hubs. Requires cotter pin for locking (sold separately).

Features:
  • Durable Construction: Built from high-strength steel for reliable performance.
  • Secure Locking: 6-slot design allows for cotter pin installation to lock in place.
  • Exact Fit: Manufactured to Lippert OE specs for 10K axle assemblies.
  • Corrosion Resistant: Treated finish withstands tough environments.
  • Heavy-Duty Application: Suitable for high-load trailer and commercial axle systems.
Interchangeable Part Numbers:
  • 181894
  • CURT 181894
Product Overview:

The Castle Nut – For 10K Axles | LPT is a genuine-fit locking nut for 10,000 lb Lippert trailer axles. With its 6-slot profile and fine 1-1/2"-12 threads, this nut ensures secure bearing preload and axle retention. Designed to resist corrosion and withstand heavy loads, it’s a dependable solution for maintaining axle integrity and wheel safety in demanding conditions.

We want you to be completely satisfied with your purchase. That’s why we offer a hassle-free return policy within 30 days of delivery*. If your item is unused, in original packaging, and eligible for return, you can send it back for a refund or exchange.

*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

Need it fast? We’ve got you covered. Orders confirmed before 3 PM Eastern Standard Time (Monday–Friday) are processed and shipped out the same business day. Orders placed after the cutoff will ship the next business day.
Castle Nut – For 10K Axles | LPT

Customer Reviews

Based on 12 reviews
92%
(11)
8%
(1)
0%
(0)
0%
(0)
0%
(0)
T
Taite Bielby
Dependable Under Stress

Installed on a construction trailer. Nut holds spindle and bearings tight even with vibrations and heavy loads.

R
Remus Currall
Easy Installation, No Issues

Slides on easily, tightens firmly, locks with cotter pin securely. Good quality steel.

K
Kristos Mallinson
Heavy and Reliable

Feels heavy-duty, threads are precise, and cotter pin slots align perfectly.

D
David Salinger
Exact Replacement for OE

Fits 1-1/2"-12 spindle threads perfectly. No adjustments needed, works right out of the box.

A
Adriano McMahon
Minor Scratch, Works Fine

One nut had a small surface scratch. Didn’t affect fit or function at all.

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