Spline Drive Bolts
SKU: 9005A
Drive Type
Spline (external hex)
Thread
M18x1.5 / M20x1.5 / M22x1.5
Key Features
- External spline drive for high-torque installation
- Grade 10.9 / 12.9 hardness tested
- M18, M20, M22, M22x1.5 thread sizes
- For American-market trucks and trailers
- Dacromet coating resists road salt corrosion
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Frequently Asked Questions
Why use spline drive vs standard hex drive?
Spline drive distributes torque over many teeth, providing higher torque transfer with reduced risk of rounding off. Critical for high-torque applications like commercial truck wheel installation.
What tools are required?
Matching spline socket (sold separately). Standard hex sockets will not engage. Specify spline size when ordering.
What grades are available?
Grade 10.9 and Grade 12.9. For commercial truck wheels, we recommend Grade 12.9 for maximum safety margin.