The M12x1.5 Washer Seat Lug Nuts (Black, 21mm Hex) are designed for vehicles requiring flat seat (mag seat) wheel fastening systems, commonly found in OEM wheels from Japanese vehicles such as Toyota and Lexus.
Featuring a high-strength steel construction with a durable black coating, these lug nuts provide secure fastening, corrosion resistance, and long-lasting performance, making them ideal for both OEM replacement and wholesale distribution.
Product Specifications
| Item | Details |
| Thread Size | M12 x 1.5 |
| Seat Type | Washer Seat (Flat Seat / Mag Seat) |
| Hex Size | 21mm |
| Material | High-Strength Steel |
| Surface Finish | Black Coated |
| Application | OEM Wheels |
| Packaging | Custom / Bulk Available |
Key Features & Benefits
High-Strength Steel Construction
Manufactured from premium-grade steel to ensure maximum durability and load-bearing capacity under demanding driving conditions.
Washer Seat (Flat Seat with Washer) Design
Ensures even pressure distribution across the wheel surface, reducing stress and improving safety.
Corrosion-Resistant Black Finish
Advanced coating protects against rust, oxidation, and harsh environments, extending product lifespan.
Precision Threading (M12x1.5)
Engineered for perfect fitment and smooth installation, minimizing cross-threading risks.
21mm Hex Head
Compatible with standard tools, enabling easy installation and removal.
Vehicle Compatibility
These lug nuts are commonly used on OEM wheels with washer seat design, including:
- Toyota (Camry, Corolla, RAV4, Tacoma, etc.)
- Lexus (RX, ES, IS series)
- Scion models
Important Note:
Not compatible with conical seat (60°) or ball seat wheels. Always confirm your wheel seat type before purchase.
Applications
- OEM wheel replacement
- Automotive repair shops
- Wheel distributors & wholesalers
- Tire service centers
Packaging & Customization
We support full OEM/ODM services:
- Logo laser marking
- Custom packaging (box / bulk / branded)
- Surface finish customization (black, chrome, etc.)
- Size and length customization
Why Choose Shengshiweiye?
- Professional lug nut manufacturer in China
- Stable quality with strict QC system
- Competitive wholesale pricing
- Fast delivery & global export experience
Inquiry / Get Quote
Looking for a reliable supplier of M12x1.5 washer seat lug nuts?
Contact us today for pricing, samples, or bulk orders:
- Company:Cangzhou Shengshi Weiye Automobile Accessory Co., Ltd.
- Website:https://www.wheelbalanceweights.com
- Email:wheelweight9@ssqcpj.com
- WhatsApp/WeChat:+86 18713779288
Contact Us
FAQ (SEO Structured Content)
What is a washer seat lug nut?
A washer seat lug nut uses a flat seating surface with a washer to evenly distribute clamping force, commonly used on OEM wheels.
Are M12x1.5 lug nuts universal?
No. While M12x1.5 is a common thread size, seat type must match the wheel (washer, conical, or ball seat).
Can I use these lug nuts on aftermarket wheels?
No. Most aftermarket wheels require conical seat lug nuts, not washer seat types.
What vehicles use washer seat lug nuts?
Mainly Toyota, Lexus, and some Japanese vehicles with OEM wheels.
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