Genuine Sinotruk Bolt M18X90 805-006-281 – Uncompromising Strength for Critical Chassis & Engine Fastening
Precision Fastening for Heavy-Duty Assemblies
The Sinotruk Bolt M18X90 805-006-281 is a genuine OEM high-strength fastener engineered to secure critical components in Howo and Sinotruk heavy-duty trucks. As a fundamental structural element, the 805-006-281 provides consistent clamping force, exceptional fatigue resistance, and precise thread engagement – all essential for maintaining vehicle integrity under Nigeria’s punishing road conditions.
This 805-006-281 bolt features a fully threaded shank, a hexagon head with a flange, and is manufactured from high-grade alloy steel with a zinc-flake coating for superior corrosion protection. Its tensile strength meets or exceeds grade 10.9 standards, ensuring that it can withstand the high torque loads and vibrations typical of chassis, engine, and suspension applications. Trust the genuine Sinotruk 805-006-281 to keep your vehicle securely assembled and safe.
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Engineering Excellence Behind the 805-006-281 Bolt
The 805-006-281 is not a standard hardware store bolt – it is a precision-engineered fastener that must withstand extreme shear, tensile, and fatigue loads over the life of the vehicle. Manufactured to Sinotruk’s stringent OEM specifications, this bolt is forged from a chromium-molybdenum steel alloy that provides an optimal balance of hardness and ductility. Its rolled threads offer superior fatigue strength compared to cut threads, reducing the risk of stress fractures in high-vibration environments.
The bolt’s flange head incorporates an integrated washer face that distributes clamping pressure evenly, reducing the risk of galling or surface damage to mating components. The 805-006-281 is also coated with a zinc-flake (geomet) finish that provides excellent corrosion resistance, even in the high-humidity and salt-spray conditions encountered in coastal regions of Nigeria.
In typical Howo heavy-duty trucks, the 805-006-281 is used in critical locations such as engine mounting brackets, chassis cross-members, suspension linkage points, and transmission bell-housing attachments. Its 18mm diameter and 90mm length are optimized for these high-load applications, ensuring that clamping forces remain within design limits and that connections remain secure over thousands of operating hours.
Technical Specifications – Bolt M18X90 805-006-281
| Parameter | Specification |
|---|---|
| OEM Part Number | 805-006-281 |
| Product Name | Bolt M18X90 (Hexagon flange bolt) |
| Brand | Sinotruk (Genuine OEM) |
| Thread Size | M18 x 2.5 (coarse) |
| Length (under head) | 90 mm |
| Head Type | Hexagon flange (integral washer) |
| Material | Chromium-molybdenum alloy steel |
| Property Class | 10.9 (high-strength) |
| Tensile Strength | ≥ 1040 MPa |
| Yield Strength | ≥ 940 MPa |
| Coating | Zinc-flake (geomet) with topcoat |
| Corrosion Resistance | ≥ 720 hours salt spray (ISO 9227) |
| Thread Form | Rolled, ISO metric |
| Recommended Torque | 450 – 500 Nm (oiled threads) |
| Application | Engine mounts, chassis, suspension, transmission |
| Compatible Models | Howo A7, T7, C7H, HW series; Sinotruk heavy-duty trucks |
Why the Genuine Sinotruk 805-006-281 Outperforms Generic Fasteners
Generic bolts often use lower-grade carbon steel with inconsistent heat treatment, leading to premature yielding or brittle fracture under high torque. The 805-006-281, by contrast, undergoes strict metallurgical testing and hardness verification to ensure it meets the 10.9 property class consistently. Its rolled threads provide a smoother surface finish, reducing friction and allowing more accurate torque application, which is critical for achieving the correct clamp load without overstressing the joint.
Additionally, the zinc-flake coating on the 805-006-281 offers superior corrosion protection compared to simple zinc plating, which can be compromised by the high-sulfur diesel fuel and road salts common in Nigeria. This coating also provides consistent lubricity, making installation easier and reducing the risk of galling in stainless or aluminum components.
Advanced Metallurgy for Extreme Conditions
The chromium-molybdenum alloy used in the 805-006-281 is specifically formulated to resist hydrogen embrittlement, a common failure mode in high-strength fasteners exposed to humid environments. Its fine-grain microstructure enhances toughness, allowing the bolt to absorb shock loads without fracturing – a critical property for suspension and chassis applications subjected to dynamic loading on Nigeria’s rough roads.
Compatibility and Fitment
The 805-006-281 is a direct replacement for the original bolt in a wide range of Sinotruk and Howo models. Its M18x90 dimensions match the exact specifications required for engine mounts, cross-members, and suspension brackets. Always verify the thread pitch (2.5mm coarse) and length before installation, and use the appropriate torque wrench to tighten to the recommended 450–500 Nm when lubricated with engine oil.
Explore the full range of genuine Howo Parts available for your fleet, including fasteners, mounting brackets, and suspension components. The 805-006-281 bolt is a vital part of that ecosystem – and with Sinotruk’s original quality, you can be confident that every critical joint will remain secure.
Installation Best Practices for the 805-006-281
Proper installation of the 805-006-281 is essential to achieve the correct clamp load and prevent joint loosening. Always clean the bolt and threaded hole of any dirt, oil, or debris before assembly. Apply a thin film of engine oil or thread lubricant to the bolt threads and under the head to ensure accurate torque readings. Tighten the bolt in a star pattern if multiple fasteners are used, and use a torque wrench set to the recommended 450–500 Nm.
Regular inspection of the 805-006-281 should be part of your vehicle’s service schedule. Check for any signs of loosening, corrosion, or deformation. If a bolt is removed, it should be replaced with a new 805-006-281 to ensure consistent clamping force, as the threads and coating may have been compromised during previous use.
Built for Nigeria – Secure Fastening in Demanding Environments
Nigeria’s heavy-duty trucking industry operates under some of the most challenging conditions in the world: extreme heat, high humidity, abrasive dust, and constant vibration from unpaved roads. The 805-006-281 is engineered to withstand these challenges. Its high-strength alloy and corrosion-resistant coating ensure that it maintains its clamping force and structural integrity, even after years of exposure to the elements.
Furthermore, the bolt’s precise thread geometry and flange head design prevent loosening due to vibration – a common issue with generic fasteners that can lead to catastrophic component failure. By choosing the genuine Sinotruk 805-006-281, fleet operators can reduce the risk of unexpected breakdowns and extend the service life of critical chassis and powertrain components.
Secure Your Vehicle with the Genuine 805-006-281 Bolt
The 805-006-281 Bolt M18X90 is a small but essential component that ensures the structural integrity of your Howo or Sinotruk truck. Its superior strength, corrosion resistance, and exact OEM fitment make it the only choice for professional workshops and fleet managers. Every time you install a genuine Sinotruk 805-006-281, you are guaranteeing safe and reliable operation, reducing downtime, and protecting your investment.
Don’t compromise with generic fasteners that may not meet the required strength or durability standards. Insist on the genuine 805-006-281 – the bolt trusted by experienced mechanics and fleet operators across Nigeria. With its proven performance in heavy-duty applications, this bolt delivers the security and peace of mind you deserve.
Genuine Sinotruk 805-006-281 – Engineered for excellence. Built for Africa. Trusted by professionals.
Packaging & Shipping
Every Howo part is carefully packaged and shipped to ensure it arrives in perfect condition, ready for installation. Our professional logistics process guarantees timely delivery across Nigeria.
Secure Packaging
Each Howo part is individually wrapped in protective materials and placed in reinforced cardboard boxes to prevent damage during transit.
Dedicated Transport
We use our own Sinotruk logistics fleet for reliable delivery, ensuring parts reach customers quickly and safely across all regions of Nigeria.
Quality Inspection
Before shipping, each part undergoes final quality checks and is clearly labeled with its OEM number for easy identification.
Nationwide Distribution
Our extensive distribution network covers all major cities and rural areas in Nigeria, ensuring prompt delivery to construction sites, workshops, and businesses.
Shipping Information for Nigerian Customers
• Standard Delivery: 3-5 business days to major cities (Lagos, Abuja, Port Harcourt, Kano)
• Express Delivery: 1-2 business days available for urgent orders
• Regional Coverage: We deliver to all 36 states including remote areas
• Tracking: All shipments include real-time tracking information
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