Key Features
- High-Strength Alloy Construction
Designed to handle extreme loads in performance and racing environments. - Precision Machined Threads
Ensures smooth installation and accurate torque readings every time. - Consistent Clamping Force
Helps maintain proper sealing and component alignment under stress. - Corrosion-Resistant Finish
Built to withstand harsh engine conditions and long-term use. - Reusable Hardware
Designed for multiple installs when properly maintained.
Available in plenty of sizes to fit your wishes, all ARP 12-point nuts are constituted of 8740 chrome moly steel or ARP 300 Series stainless-steel subject material, and meet ARP’s easiest standards of quality. Rated at 180,000 psi tensile strength, ARP 12-point nuts are manufactured in thick wall versions for maximum strength and rigidity and skinny wall versions for applications with limited space requirements. All 8740 chrome moly steel nuts are black oxide finished and all stainless-steel nuts are polished to a briliant luster. ARP 12-point nuts are to be had in 1-piece bulk, 2-piece and 10 piece packages. Metric 12Point Nut 10Pieces Size M9 x 1.00 Socket 11mm
ARP 300-8361 nut kit high strength engine fasteners – Ideal Applications
- Cylinder head stud setups
- Main studs and bottom-end builds
- High-performance or boosted engines
- Engine rebuilds where reliability actually matters
Basically anywhere failure is not an option.
Why It Matters
Cheap or inconsistent hardware can lead to:
- Uneven clamping force
- Torque inaccuracies
- Component failure under load
The ARP 300-8361 Nut Kit ensures secure fastening, accurate torque retention, and long-term reliability, even in demanding builds.
M9 X 1.00 12PT NUT KIT
Installation Notes
- Follow ARP torque specifications
- Use ARP Ultra-Torque lubricant for accurate clamping force
- Verify compatibility with your specific stud kit/application
Translation: don’t just crank them down and hope.
Final Verdict
The ARP 300-8361 Nut Kit is a must-have for serious engine builders who want reliability where it actually counts. It’s not flashy—but it keeps everything else from coming apart.
And that’s kind of important.


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