Based on our design and production experience, the M14x1.5 Locking Conical Seat Wheel Lug Bolts stand out with the following features.
1. Conical seat design with a 17mm hex. This matches aftermarket and OEM conical wheel hubs. The 60° taper creates a self-centering fit that reduces the risk of off-axis torque application a common cause of bolt loosening in aftermarket wheel installations.
2. Integrated locking mechanism. Each set includes one locking bolt with a unique key, helping prevent unauthorized wheel removal.
3. High-strength alloy steel. Selected for its tensile strength and fatigue resistance, processed through controlled heat treatment.
4. CNC machined threads. Ensure smooth installation and consistent torque application.
These highlights directly address the daily concerns of drivers and fleet operators: wheel security and long-term retention.
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Parameter Item |
Technical Specification |
|
Brand Name |
J&W Auto Parts |
|
Product Name |
M14x1.5 Locking Conical Seat Wheel Lug Bolts |
|
Thread Size |
M14 x 1.5 |
|
Seat Type |
Conical Seat (60° tapered) standard / Ball Seat (R12/R13/R14) available upon request |
|
Material |
High-strength Alloy Steel (Grade 10.9 / 12.9) |
|
Surface Treatment |
Chrome, Black Zinc, or Dacromet (Salt spray test 72h-500h) |
|
Hex Size |
17mm / 19mm / Dual Hex |
|
Feature |
Conical |
Ball |
|
Contact surface |
Taper |
Radius |
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Application |
Aftermarket wheels |
OEM wheels |
|
Centering |
Better |
Different design |
J&W Auto Part uses high-strength alloy steel for the M14x1.5 Locking Conical Seat Wheel Lug Bolts to achieve a balanced combination of strength, toughness and fatigue resistance.
Through controlled quenching and tempering processes, Grade 10.9 bolts achieve a core hardness of HRC 32-39, while maintaining sufficient ductility to withstand repeated tightening cycles and road vibration loads. Grade 12.9 material is also available for applications requiring higher tensile strength.
Each production batch is verified through:
· Material composition analysis by spectrometer
· Hardness testing
· Thread dimensional inspection
· Salt spray corrosion testing
For quality validation, our internal laboratory performs clamp force and fatigue testing on production samples. Detailed test reports, including raw data, are available for qualified B2B customers upon request.
Our production base in Ningbo, Zhejiang, spans over 10 acres and employs more than 100 skilled workers. The facility is equipped with the following.
1. 12 large cold heading machines.
2. Over 20 machining centers.
3. Two large stamping machines.
4. An automatic electroplating production line.
This vertically integrated setup allows us to control every production step, from wire rod forming to surface finishing, under one roof. Cold heading ensures material grain flow continuity, while CNC machining delivers precise thread geometry. The electroplating line provides various surface finishes to meet corrosion resistance requirements, with salt spray testing performed on each batch to verify durability.
We fully implement 5S management across our workshop: Sort, Set in order, Shine, Standardize, and Sustain. This system reduces waste, prevents errors, and ensures that inspection points are clearly defined. Our quality control department is equipped with a spectrometer, hardness tester, and salt spray tester, enabling comprehensive material and performance checks. Every production lot of the Locking Conical Seat Wheel Lug Bolts is subject to these rigorous protocols, guaranteeing that you receive products with consistent quality, whether you order 100 pieces or 10,000.
M14x1.5 locking wheel bolts with 60° cone seat, designed for aftermarket alloy wheels with tapered seat. Factory original wheels of VW Golf/Passat, Audi A3/A4, BMW 3/5 Series, Mercedes C/E-Class, Skoda Octavia adopt ball seat, NOT compatible with stock OEM wheels. This bolt can be used on above vehicles only when fitted with aftermarket cone-seat wheels. Also fits most Japanese & Korean compact/mid-size sedans with M14x1.5 thread & cone seat wheel holes. Please confirm your thread size (M14x1.5) AND wheel seat type before order. Ideal choice for auto repair shops and car tuning enthusiasts.
J&W Auto Part manufactures the Locking Conical Seat Wheel Lug Bolts under the same quality certifications that govern our entire fastener production and Certificate can be available upon your request.
ISO 9001：Our quality management system is certified from raw material procurement through to final delivery, ensuring consistent product quality and traceable production records for every batch.
IATF 16949: This automotive industry standard confirms that our production processes meet OEM-level requirements for product development, manufacturing, and defect prevention. For buyers, this means our wheel bolts are produced with the same rigor as factory-installed fasteners.
TUV Product Testing: Selected batches of our lug bolts have been tested by TUV Rheinland for dimensional accuracy, tensile strength, and fatigue resistance, providing documented safety assurance.
SGS Verification: SGS provides independent, third-party verification of our product quality and manufacturing capability, reducing the need for buyers to conduct separate factory audits.
EEC Type Approval: Our fasteners comply with European technical regulations and compliance documentation can be provided according to destination market requirements.
We understand that not all applications are standard. J&W Auto Parts offers comprehensive custom services for the Locking Conical Seat Wheel Lug Bolts and our entire fastener range.
1. Custom lengths to accommodate wheels with different mounting flange thicknesses.
2. Surface finishes tailored to your corrosion protection needs, for example achieving higher salt spray resistance.
3. Laser marking with your logo or part numbers.
4. Packaging options: branded boxes, blister packs, or bulk packaging as per your requirements.
5. Non-standard thread sizes or head designs based on your drawings or samples.
Our technical team, which includes mechanical design and metal processing experts, collaborates with you to develop the right solution. With decades of experience and flexible production capacity, we can handle both small-batch prototype orders and large-volume production runs.
When you source M14x1.5 Locking Conical Seat Wheel Lug Bolts from us, you benefit from the following.
1. Advanced manufacturing facilities. Our 12 cold heading machines and over 20 machining centers enable high precision and fast turnaround.
2. Strict quality management. Our 5S system, in-house spectrometer, hardness tester, and salt spray tester ensure every batch meets our standards.
3. Professional technical team. Continuous improvement and simulation testing help optimize product design for safety.
4. Efficient supply chain. Located near Ningbo Port, we ship globally with competitive lead times.
5. Proven track record. We serve customers across Europe, North America, and Southeast Asia, both distributors and OEMs.
6. Our Warranty. We offer a 12-month warranty against manufacturing defects in materials and workmanship. Any quality-related issues reported within this period will be covered by free replacement.
Check your current wheel bolts or the wheel mounting hole. Conical seats have a tapered countersink. You can also consult your vehicle owner's manual or the wheel manufacturer's specifications. Our M14x1.5 thread size is common in many models.
For grade 10.9 M14x1.5 bolts, typical torque ranges from 110 to 140 Nm, but always follow your vehicle manufacturer's recommendation. Our bolts are designed to handle these values without yielding.
Standard black zinc plating achieves 72-120 hours of salt spray resistance. Dacromet coating can achieve 480 hours or more. We can recommend the most cost-effective finish based on your specific environmental conditions.
Yes. We offer OEM/ODM services including custom packaging, laser engraving, and special lengths. Just provide your specifications, and we will produce accordingly.
Absolutely. We offer pre-production samples for fitment and quality validation. Sample lead time is typically 7 to 15 working days.
Typical lead time is 25 to 45 working days, depending on order quantity, surface finish requirements, and customization needs. We will confirm exact timing upon order placement.
Yes. Each set includes one key. We also keep key pattern records, so if you lose your key, we can provide a replacement based on your order records.
Conical (60° tapered) seats are designed for steel hubs and most aftermarket alloy wheels, providing a self-centering effect that distributes clamp force evenly across the tapered surface. Ball seats (R12/R13) are mainly for original OEM steel wheels of some European brands.
Our fatigue test comparison (J&W Lab #2025-FT-09): After 100,000 vibration cycles at 30Hz, our conical seat bolts retained 97.2% of initial clamp force, while ball seat bolts averaged 94.5% under the same test conditions. If your wheel hub has a conical countersink, our M14x1.5 offers superior long-term retention.
You can check by the following aspects to choose the right type:
· Thread measurement
· Seat type
· Bolt length
· Strength grade
· Surface coating
*Internal laboratory test report J&W Lab #2025-FT-09. Test data available for qualified buyers upon request.
Looking for a reliable manufacturer of M14x1.5 locking conical seat wheel lug bolts?
Contact J&W Auto Part for product specifications, quotation, samples, OEM customization and technical support.
Please provide your required:
· Thread size
· Bolt length
· Surface finish
· Required quantity
· Packaging or marking requirements
Our sales and engineering team will review your requirements and provide feedback within 24 hours.
Export Department Email: admin@jwautopart.com WhatsApp: +86-13968248530
Factory Address: No.539 Guangyi Road, Guanhaiwei Town, Cixi, Ningbo, Zhejiang, China
We welcome global distributors, automotive workshops and OEM partners to visit our manufacturing facility and discuss long-term cooperation.
Address
No.539 Guangyi Road, Guanhaiwei Town, Cixi, Ningbo, Zhejiang, China
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