Genuine Sinotruk Bolt M20X80 805-048-815 – Superior Fastening Power for Howo Heavy-Duty Chassis & Driveline
Precision-Engineered Fastening for Critical Load-Bearing Assemblies
The Sinotruk Bolt M20X80 805-048-815 is a genuine OEM high-strength fastener engineered to secure the most demanding connections in Howo and Sinotruk heavy-duty trucks. As a cornerstone of vehicle structural integrity, the 805-048-815 delivers consistent clamping force, exceptional shear strength, and precise thread engagement – ensuring your truck remains safely assembled under the extreme loads of Nigerian roads.
This 805-048-815 bolt features a fully threaded shank, a heavy-duty hexagon head with an integral flange, and is forged from heat-treated alloy steel with a zinc-nickel coating for superior corrosion protection. Rated to property class 10.9, it can withstand high torque and dynamic loads, making it ideal for suspension arms, engine mounting brackets, and gearbox supports. Trust the genuine Sinotruk 805-048-815 to keep your truck securely fastened and operating safely.
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Engineering Excellence Behind the 805-048-815 Bolt M20X80
The 805-048-815 is not a generic fastener – it is a precision-engineered component that must endure cyclic fatigue, high shear loads, and severe vibration without loosening or fracturing. Manufactured from a premium chromium-molybdenum-vanadium alloy steel, this bolt offers an outstanding strength-to-weight ratio and excellent toughness even at low temperatures. Its threads are rolled rather than cut, which work-hardens the thread roots and significantly increases fatigue resistance – a critical advantage for suspension and driveline applications.
The flange head incorporates an undercut that reduces stress concentration at the fillet, and the bearing face is serrated to provide a positive locking action against the mating surface. The 805-048-815 is also coated with a zinc-nickel layer that provides cathodic protection, ensuring it remains rust-free even after prolonged exposure to road salt, mud, and high humidity – common conditions in Nigeria’s coastal and interior regions.
In a typical Howo truck, the 805-048-815 is used in high-stress locations such as front axle U-bolt plates, rear suspension hanger brackets, and transmission cross-members. Its M20 diameter and 80mm length are optimised for these heavy-duty joints, offering a generous clamping area and sufficient thread engagement to develop the full tensile capacity of the bolt.
Technical Specifications – Bolt M20X80 805-048-815
| Parameter | Specification |
|---|---|
| OEM Part Number | 805-048-815 |
| Product Name | Bolt M20X80 (Hexagon flange bolt) |
| Brand | Sinotruk (Genuine OEM) |
| Thread Size | M20 x 2.5 (coarse) |
| Length (under head) | 80 mm |
| Head Type | Hexagon flange, serrated face |
| Material | Cr-Mo-V alloy steel (30CrMoV) |
| Property Class | 10.9 (high-strength) |
| Tensile Strength | ≥ 1040 MPa |
| Yield Strength | ≥ 940 MPa |
| Coating | Zinc-nickel (geomet-compatible) |
| Corrosion Resistance | ≥ 1000 hours salt spray (ISO 9227) |
| Thread Form | Rolled, ISO metric |
| Recommended Torque | 620 – 680 Nm (oiled threads) |
| Application | Axles, suspensions, gearbox mounts, frame |
| Compatible Models | Howo A7, T7, C7H, HW series; Sinotruk heavy-duty trucks |
Why the Genuine Sinotruk 805-048-815 Outperforms Generic Fasteners
Generic bolts of this size often use lower-grade carbon steel with inconsistent heat treatment, leading to premature yielding or brittle fracture under high torque. The 805-048-815 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 – critical for achieving the correct clamp load without overstressing the joint.
Additionally, the zinc-nickel coating on the 805-048-815 offers superior galvanic protection compared to standard zinc plating, especially when in contact with aluminium components – a common scenario in modern truck construction. This coating also provides consistent lubricity, making installation easier and reducing the risk of galling.
Advanced Metallurgy for Extreme Conditions
The chromium-molybdenum-vanadium alloy used in the 805-048-815 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 805-048-815 is a direct replacement for the original bolt in a wide range of Sinotruk and Howo models. Its M20x80 dimensions match the exact specifications required for front axle U-bolts, rear spring hangers, and heavy-duty cross-members. Always verify the thread pitch (2.5mm) and length before installation, and use a calibrated torque wrench to tighten to the recommended 620–680 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 805-048-815 bolt is a vital part of that ecosystem – and with Sinotruk’s original quality, you can be confident that every critical joint will remain securely fastened.
Installation Best Practices for the 805-048-815
Proper installation of the 805-048-815 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 620–680 Nm.
Regular inspection of the 805-048-815 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 805-048-815 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 805-048-815 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 805-048-815, 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 805-048-815 Bolt
The 805-048-815 Bolt M20X80 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 805-048-815, 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 805-048-815 – 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 805-048-815 – 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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