Pack of 6 Drive-In Wheel Studs — 1/2"-20 Thread, 0.561" Spline, 2" Long
Six-piece drive-in trailer wheel stud set for compatible Ranger / UFP-style hub applications where the stud measurements match. Built for trailer wheel service, hub repair, and replacement of worn or damaged press-in studs.
Overview
This 6-pack of drive-in wheel studs is a clean replacement option for compatible trailer hubs using a 1/2"-20 wheel stud with a 2" overall length and approximately 0.561" to 0.562" spline diameter. Commonly used in boat trailer service, these studs are intended for applications where the existing hub, stud hole, thread size, spline diameter, and stud length match.
R&P Service Insight
Wheel studs are small parts, but they carry real clamp-load responsibility. A worn, stripped, spinning, or damaged stud should be matched carefully before replacement.
- Thread Match: Verify the 1/2"-20 thread size before ordering.
- Spline Fit: The spline diameter must match the hub hole closely for proper press-in retention.
- Trailer Use: Commonly found on boat trailer hubs, including compatible Ranger / UFP-style applications.
R&P Knowledge Hub
Compatibility: Designed for hub applications using 1/2"-20 drive-in studs with approximately 0.562" spline diameter and 2" overall length.
Vehicle / System Fit: Commonly found on boat trailers and compatible UFP-style trailer hubs where dimensions match.
Installation Notes: Confirm spline diameter, base diameter, spline length, thread size, and overall length before pressing into the hub.
Performance Insight: A drive-in stud depends on correct spline engagement; an undersized or oversized spline can cause poor retention or hub damage.
Brand & Fitment Note
Selling Brand: R&P Carriages replacement wheel stud set.
Application Reference: Ranger and UFP names describe common compatibility and application style only where the listed dimensions match the customer’s hub.
What This Means: This listing is for a 6-piece replacement wheel stud set, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Verify thread size, stud length, spline diameter, spline length, base diameter, hub condition, and lug nut compatibility before installation.
R&P Repair Insight
When replacing trailer wheel studs, measuring the old stud is not optional. The thread may look right while the spline diameter or base profile is wrong.
- Check the Spline: This stud uses approximately a 0.561" to 0.562" spline diameter.
- Check the Length: This listing is for a 2" long drive-in stud.
- Check the Hub: If the old stud spun in the hub, inspect the stud hole before installing a replacement.
Features
Six-Piece Stud Set
Includes six drive-in wheel studs for trailer hub service and wheel-end repair.
1/2"-20 Thread Size
Common trailer wheel stud thread size for matching compatible lug nuts and hub assemblies.
2" Overall Length
Designed for applications requiring a 2" long wheel stud with matching spline and base dimensions.
Boat Trailer Hub Application
Commonly found on boat trailer hubs, including compatible Ranger / UFP-style applications where dimensions match.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 33038U-6 |
| Brand | R&P Carriages replacement wheel stud set |
| Product Type | Drive-in trailer wheel studs |
| Quantity | Set of 6 |
| Thread Size | 1/2"-20 |
| Overall Length | 2" |
| Spline Length | 0.25" |
| Base Diameter | 0.65" |
| Spline Diameter | 0.561" to 0.562" |
| Application | Common boat trailer hub applications |
| Fitment Reference | Compatible UFP-style hubs where measurements match |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Trailer wheel hub / wheel-end hardware |
| Primary Fit | Boat trailer hubs using 1/2"-20 drive-in studs with matching spline dimensions |
| Secondary Fit | Commonly referenced for Ranger / UFP-style hub applications |
| Notes | Always match the removed stud by thread size, length, spline diameter, spline length, base diameter, and hub hole condition before installation. |
Included Components
| Quantity | Item |
|---|---|
| 6 | Drive-in wheel studs, 1/2"-20 thread, 2" long |
| Not Included | Lug nuts, hub assembly, wheel, bearings, seals, or installation tools |
