1"-14 Fine Thread 6-Slot Spindle Castle Nut for Dexter, AL-KO, and Rockwell Trailer Axles
Heavy-duty 1"-14 fine thread spindle castle nut designed to secure hub and bearing assemblies on standard trailer spindles where a cotter-pin-secured nut is required.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Number / SKU | FA-SN100 |
| Product Type | Spindle castle nut |
| Thread Size | 1"-14 fine thread |
| Style | 6-slot castle nut / 6 castellations |
| Material / Finish | Machined steel with corrosion-resistant finish |
| Securement | Uses standard cotter pin; cotter pin not included |
| Quantity Included | 1 spindle castle nut |
Fitment / Application
| Category | Details |
|---|---|
| Trailer Use | Utility, car hauler, cargo, and equipment trailer applications |
| Primary Fit | Standard 1"-14 fine thread spindles on most 2,000 lb to 7,000 lb axles |
| Brand Compatibility | Dexter, AL-KO, Rockwell, Quality Trailer Axles, and Lippert applications where thread size and spindle style match |
| Fitment Method | Verify spindle thread size, axle rating, and cotter pin hole alignment before ordering |
| Important Note | For 10K or 12K heavy-duty axles, use the appropriate larger nut |
Top Features
| Feature | Buyer Benefit |
|---|---|
| 1"-14 Fine Thread | Matches standard 1"-14 trailer spindle applications when measurements confirm fitment |
| 6-Slot Castle Design | Allows cotter pin alignment for hub and bearing securement |
| Steel Construction | Machined steel construction with corrosion-resistant finish for trailer spindle service |
| Axle Service Use | Suitable for axle maintenance, rebuilds, or spindle repair work on compatible applications |
Overview
This 1"-14 fine thread 6-slot spindle castle nut is used to secure hub and bearing assemblies on compatible trailer spindles. It is intended for axle maintenance, rebuilds, and spindle repair work where a cotter-pin-secured nut is required.
R&P Service Insight
Spindle hardware should be matched by thread size and application before installation. Confirm the spindle uses a 1"-14 fine thread castle nut and that the cotter pin hole can align correctly with the castle slots.
- Thread Check: Verify 1"-14 fine thread before ordering.
- Cotter Pin: This nut uses a standard cotter pin; cotter pin is not included.
- Axle Rating: Listed for most 2,000 lb to 7,000 lb axle applications; 10K and 12K axles require the appropriate larger nut.
R&P Knowledge Hub
Compatibility: Compatible with Dexter, AL-KO, Rockwell, Quality Trailer Axles, and Lippert applications where the spindle thread size and axle requirements match.
Trailer System Fit: Used with hub and bearing assemblies on standard trailer spindles requiring a cotter-pin-secured castle nut.
Installation Notes: Always torque spindle nuts to manufacturer specifications, ensure threads are clean and lightly lubricated, and align castle slots with the cotter pin hole.
Performance Insight: The 6-slot castle design supports cotter pin securement after the nut is adjusted on the spindle.
Brand & Fitment Note
Selling Brand: Not specified in provided information
Application Reference: Dexter, AL-KO, Rockwell, Quality Trailer Axles, and Lippert names are used as compatibility references for matching 1"-14 spindle applications.
What This Means: This listing is for a 1"-14 fine thread 6-slot spindle castle nut, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Verify thread size, axle rating, spindle style, cotter pin hole alignment, and included components before installation.
R&P Repair Insight
This nut is commonly used during hub, bearing, axle maintenance, or spindle repair work. Match the nut to the spindle thread before installation and inspect the spindle threads before reuse.
- Inspect Threads: Check for thread wear or burrs before reuse.
- Clean Before Install: Ensure spindle threads are clean and lightly lubricated before installation.
- Secure Correctly: Align the castle slots with the cotter pin hole and do not back off more than 1/4 turn.
Features
1"-14 Fine Thread Fit
Designed for compatible standard trailer spindles using a 1"-14 fine thread spindle nut.
6-Slot Castle Nut Design
Six castellations allow slot alignment with the cotter pin hole for hub and bearing securement.
Machined Steel Construction
Machined steel with corrosion-resistant finish for trailer axle service applications.
Common Trailer Axle Application
Used on compatible utility, car hauler, cargo, and equipment trailer axle applications rated between 2,000 lb and 7,000 lb.
Included Components
| Quantity | Item |
|---|---|
| 1 | 1"-14 fine thread 6-slot spindle castle nut |
| Not Included | Standard cotter pin |
