10K Lippert Spindle End Kit with Washer, Nut & Cotter Pin for Trailer Axles
Replacement spindle end hardware kit for compatible heavy-duty trailer axles, including the spindle washer, 6-slot spindle nut, and cotter pin used during axle end service.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Number / SKU | SEK-2 |
| Brand | R&P Carriages assembled kit with Lippert LCI / AL-KO reference components |
| Product Type | Trailer axle spindle end hardware kit |
| Primary Measurement | Spindle nut thread: 1-1/2"-12 UNF-2B |
| Additional Measurements | Washer: 1-1/2" ID x 3" OD, round; cotter pin: 1/4" x 2-1/2" |
| Material / Finish | Metal spindle hardware; finish not specified |
| Quantity Included | 3 total pieces: washer, spindle nut, and cotter pin |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / Trailer / System | Heavy-duty trailer axle spindle end hardware |
| Primary Fit | 10K Lippert axle applications using matching spindle end hardware |
| Secondary Reference | Listed AL-KO and Hayes 10K–16K axle reference K568135 |
| Fitment Method | Verify spindle nut thread, washer ID/OD, nut style, cotter pin size, axle rating, and axle manufacturer reference before ordering. |
| Important Note | Application references describe compatibility only. This kit must match the spindle and hub service setup on the trailer. |
Top Features
| Feature | Buyer Benefit |
|---|---|
| Complete End Hardware Set | Includes the three key outer spindle service pieces: washer, spindle nut, and cotter pin. |
| 6-Slot Spindle Nut | Allows cotter pin alignment after proper bearing adjustment. |
| 1-1/2"-12 UNF-2B Thread | Matches compatible heavy-duty axle spindle applications requiring this nut thread specification. |
| 10K Lippert Application | Built around the listed 10K Lippert spindle end service application and related component references. |
Overview
This SEK-2 10K Lippert spindle end kit includes the key outer spindle hardware commonly replaced during hub, drum, bearing, or axle end service. The kit includes one Lippert LCI spindle washer, one Lippert LCI cotter pin, and one AL-KO style 6-slot spindle nut with a 1-1/2"-12 UNF-2B thread specification. It is intended for compatible 10K Lippert applications and listed AL-KO / Hayes 10K–16K axle references where the matching spindle hardware is required.
R&P Service Insight
Spindle end hardware should be checked carefully whenever a hub or drum is removed from a heavy-duty trailer axle.
- Washer: Helps seat the spindle nut properly against the bearing assembly.
- Spindle Nut: 6-slot nut allows cotter pin alignment after bearing adjustment.
- Cotter Pin: Secures the spindle nut after final adjustment.
R&P Knowledge Hub
Compatibility: Fits listed AL-KO and Hayes 10K–16K axle reference K568135 and 10K Lippert applications where the matching spindle hardware is required.
Vehicle / System Fit: Heavy-duty trailer axle spindle end service hardware for compatible hub and bearing assemblies.
Installation Notes: Verify spindle thread, washer size, nut style, axle rating, and cotter pin requirements before installation.
Performance Insight: Correct spindle nut adjustment and cotter pin installation are critical for safe bearing preload and hub retention.
Brand & Fitment Note
Selling Brand: R&P Carriages assembled spindle end hardware kit.
Application Reference: 10K Lippert spindle end hardware; AL-KO / Hayes 10K–16K axle reference K568135.
What This Means: This listing includes the washer, spindle nut, and cotter pin only. It does not include a hub, drum, bearing set, seal, spindle, or axle beam.
Before Ordering: Match your existing spindle nut thread, washer dimensions, axle rating, axle manufacturer reference, and required spindle nut style before purchasing.
R&P Repair Insight
Replacing spindle end hardware is a smart step when original parts are worn, damaged, missing, or no longer seating properly. Always inspect the spindle threads and bearing condition before reassembly.
- Check Thread Condition: Damaged spindle threads can prevent the nut from tightening or adjusting correctly.
- Check Washer Fit: Confirm the 1-1/2" ID washer matches the spindle and bearing setup.
- Check Cotter Pin Alignment: The 6-slot nut must align correctly for cotter pin installation after final bearing adjustment.
Features
Complete Spindle End Hardware Set
Includes one spindle washer, one 6-slot spindle nut, and one cotter pin for compatible trailer axle end service.
10K Lippert Application
Built around the listed 10K Lippert spindle end service application with supplied component reference numbers.
Heavy-Duty Axle Reference
Listed fitment reference includes AL-KO and Hayes 10K–16K axles under reference K568135.
Service-Ready Replacement
Useful for hub, drum, bearing, axle end, and spindle hardware service when the original nut, washer, or cotter pin needs replacement.
Included Components
| Quantity | Item |
|---|---|
| 1 | 181895 — Lippert LCI spindle washer, 1-1/2" ID x 3" OD, round |
| 1 | 181899 — Lippert LCI cotter pin, 1/4" x 2-1/2" |
| 1 | 006-239-00 — AL-KO spindle nut, 1-1/2"-12 UNF-2B, 6-slot |
