OPEN-END ACORN WHEEL NUT
Open-End Acorn Wheel Nut — A precise tapered seat that centers the wheel naturally while supporting longer studs.
Our Open-End Acorn Wheel Nuts are designed for drivers who value precise wheel alignment and smooth, predictable installation. The tapered acorn seat naturally guides the wheel into position, giving a confident tightening feel that is especially important for performance wheels and aftermarket applications where accurate seating matters.
Each nut is cold-forged from reliable low-carbon steel such as 1010, providing balanced strength and ductility for repeated installation without cracking. CNC machining refines the threads and contact surfaces, ensuring smooth engagement and consistent torque performance in both daily driving and more spirited use.
Open-End Acorn Wheel Nuts are recognized for their precise centering, user-friendly installation, and compatibility with a wide range of aftermarket wheels—making them a dependable and practical choice for drivers who appreciate accuracy and ease of use.
Open-End Acorn Wheel Nuts can be customized in size, seat type, and thread specification to support global vehicle markets. Typical sizes include:
Thread Size: M10, M12, M14, M16, 7/16"-20, 1/2"-20, 9/16"-18 Seat Type: Conical / Spherical / Flat Hex Size: 17 mm, 19 mm, 21 mm, 13/16", 3/4" Height: Customizable based on wheel design Thread Standard: ISO, DIN, SAE, JIS compliant
OEM samples or drawings are welcome for full customization.
Every nut is produced through a controlled, multi-stage process to ensure mechanical strength, accuracy, and flawless surface quality:
1. Multi-Stage Cold Forging Forms the nut body with superior grain flow and high structural integrity. Reduces material waste compared to cutting processes. Ensures consistent dimensions and strong mechanical properties. 2. Precision CNC Machining Applied for thread finishing, chamfering, and seat optimization. Guarantees accurate thread engagement and smooth assembly. 3. Heat Treatment (Carburizing / Quenching / Tempering) Enhances hardness, tensile strength, and resistance to fatigue. Meets OEM torque requirements and vehicle safety standards. 4. Surface Treatment Available coatings include: Zinc Plating (Clear / Black) Dacromet / Geomet Electrophoretic Coating (E-coating) Nickel-Chrome Plating
These coatings provide corrosion resistance, friction stability, and an appealing appearance for aftermarket wheels.
100% thread inspection (GO/NO-GO gauges) Torque and proof-load testing Salt spray corrosion testing (per coating requirements) Dimensional inspection with calibrated instruments Compliant with ISO/TS 16949 automotive standards Chuen Chao’s manufacturing workflow ensures each nut maintains reliable torque retention and long-term performance under vibration, load, and environmental exposure.
OEM & aftermarket manufacturing capability Full customization for size, seat, coating, and packaging High-strength cold-forged steel with certified heat treatment Strict quality assurance from raw material to final inspection Flexible production for both small and large-volume orders