Genuine Sinotruk Bolt M20X65 805-006-285 – Supreme Strength for Heavy-Duty Chassis & Powertrain Assembly
Unmatched Clamping Force for Critical Joints
The Sinotruk Bolt M20X65 805-006-285 is a genuine OEM high-tensile fastener engineered to secure the most demanding connections in Howo and Sinotruk heavy-duty trucks. From engine supports to suspension links, the 805-006-285 delivers consistent preload, exceptional shear strength, and precise thread fit – ensuring your vehicle remains safely assembled under the extreme loads of Nigerian roads.
This 805-006-285 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 maximum corrosion protection. Rated to property class 10.9, it can withstand torque values exceeding 600 Nm, making it ideal for axle housings, frame cross-members, and bell-housing attachments. Rely on the genuine Sinotruk 805-006-285 for uncompromising fastening integrity.
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Engineering Precision Behind the 805-006-285 Bolt
The 805-006-285 is a precision-engineered fastener that must endure cyclic fatigue, high shear loads, and severe vibration without loosening or fracturing. Manufactured from a proprietary chromium-molybdenum-vanadium steel, this bolt offers an outstanding strength-to-weight ratio and excellent toughness 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 805-006-285 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.
In a typical Howo truck, the 805-006-285 is used in high-stress locations such as the front axle U-bolt plates, rear suspension hanger brackets, and transmission support cross-members. Its M20 diameter and 65mm 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 M20X65 805-006-285
| Parameter | Specification |
|---|---|
| OEM Part Number | 805-006-285 |
| Product Name | Bolt M20X65 (Hexagon flange bolt) |
| Brand | Sinotruk (Genuine OEM) |
| Thread Size | M20 x 2.5 (coarse) |
| Length (under head) | 65 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 805-006-285 Outperforms Generic Fasteners
Generic bolts of this size often rely on inferior steel with inconsistent heat treatment, leading to either low ductility or insufficient hardness. The 805-006-285 undergoes a specialised quenching and tempering process that produces a fine-tempered martensitic structure, delivering an optimal combination of strength and toughness. This means the bolt can absorb shock loads without cracking, while still maintaining the required clamp load over time.
Moreover, the zinc-nickel coating on the 805-006-285 provides superior galvanic protection compared to standard zinc plating, especially when in contact with aluminium components – a common scenario in modern truck construction. Its low coefficient of friction ensures consistent torque-tension relationship, reducing the risk of under- or over-tightening.
Advanced Metallurgy for Demanding Applications
The vanadium micro-alloying in the 805-006-285 refines the grain structure, improving resistance to hydrogen embrittlement and stress-corrosion cracking – both critical failure modes for high-strength fasteners in humid, saline environments. This makes the 805-006-285 particularly well-suited for Nigeria’s coastal and rainy regions, where moisture and salt can quickly degrade inferior fasteners.
Compatibility and Fitment
The 805-006-285 is a direct replacement for the original bolt in a wide range of Sinotruk and Howo models. Its M20x65 dimensions are standard for rear spring hanger brackets, axle U-bolt plates, and gearbox mounting brackets. Always verify the thread pitch (2.5mm) and length, and use a calibrated torque wrench to tighten to the recommended 620–680 Nm when lubricated with engine oil.
Explore the full catalogue of genuine Howo Parts available for your fleet, including fasteners, brackets, and suspension components. The 805-006-285 bolt is an essential part of that ecosystem – and with Sinotruk’s original quality, you can be confident that every critical joint will remain reliably secured.
Installation Best Practices for the 805-006-285
For optimal performance of the 805-006-285, follow these guidelines: Clean both the bolt and the threaded hole thoroughly to remove any dirt, grease, or burrs. Apply a thin layer of clean engine oil to the threads and the flange bearing face to achieve consistent torque readings. Tighten the bolt in a cross pattern (if multiple bolts are used) and gradually bring it to the final torque in three stages (30%, 60%, 100%). After driving the vehicle for a few hundred kilometres, re-check the torque to allow for any initial settlement.
Routine inspection of the 805-006-285 should be performed during chassis lubrication or suspension services. Look for any signs of loosening, corrosion, or deformation. If a bolt is removed for any reason, it is strongly recommended to replace it with a new 805-006-285 to ensure the integrity of the joint, as the torque-tension relationship may have been altered.
Built for Nigeria – Unrivaled Reliability in Harsh Environments
Nigerian heavy-duty trucks operate under severe conditions: potholes, unpaved routes, high temperatures, and frequent heavy braking. The 805-006-285 is engineered to withstand these challenges. Its exceptional tensile strength and fatigue resistance ensure that axle and suspension connections remain tight, reducing the risk of alignment shifts or component loosening that could lead to costly breakdowns.
Furthermore, the advanced corrosion protection of the 805-006-285 ensures that it remains serviceable even after years of exposure to mud, water, and road chemicals. By choosing this genuine Sinotruk bolt, fleet operators gain peace of mind, knowing that their vehicles’ structural integrity is backed by OEM-grade engineering.
Fasten with Confidence – Choose the Genuine 805-006-285
The 805-006-285 Bolt M20X65 is more than a simple fastener – it is a cornerstone of safety and reliability for your Howo or Sinotruk truck. Its unparalleled strength, corrosion resistance, and exact OEM fitment make it the definitive choice for professional workshops and fleet managers. Every time you install a genuine Sinotruk 805-006-285, you are investing in long-term durability, reduced maintenance, and driver safety.
Never compromise on critical fasteners. Insist on the genuine 805-006-285 – 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 confidence you demand.
Genuine Sinotruk 805-006-285 – 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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