Genuine Sinotruk Bolt 805-041-414 – Unrivaled Fastening Strength for Howo Chassis & Driveline Integrity
Heavy-Duty Washer for Ripper and Earthmoving Equipment
The Sinotruk Washer (Ripper) 805-338-284 is a genuine OEM precision hardened washer engineered specifically for securing ripper shanks, teeth, and other heavy attachments on Howo and Sinotruk construction machinery. As a critical component in high-impact applications, the 805-338-284 provides superior load distribution, prevents embedding, and ensures joint integrity under the extreme shock loads and vibrations experienced during ripping and demolition operations on Nigerian job sites.
This 805-338-284 washer is manufactured from ultra-high-strength spring steel, heat-treated to a hardness of 40–45 HRC, and coated with a zinc-nickel layer for excellent corrosion resistance. Its precise inner and outer diameters, along with a substantial thickness, guarantee a perfect fit for M24 fasteners, offering a large bearing area to distribute loads evenly and prevent bolt embedment into soft materials. Trust the genuine Sinotruk 805-338-284 to keep your ripper attachments securely fastened and operating safely.
Washer (Ripper)
English
Шайба (рыхлитель)
Russian
Arandela (desgarrador)
Spanish
Engineering Excellence Behind the 805-338-284 Ripper Washer
The 805-338-284 is far more than a simple flat washer – it is a precision-engineered component designed to withstand the brutal forces of ripping, scarifying, and demolition work. Manufactured from a premium high-carbon steel alloy (SAE 1074/1095), it is carefully heat-treated to achieve a hardness of 40–45 HRC, providing exceptional resistance to deformation and embedment under extreme clamping loads. Its flatness and parallelism are held to within 0.05 mm, ensuring uniform load distribution across the entire bearing surface.
The zinc-nickel coating on the 805-338-284 offers outstanding protection against corrosion, far surpassing standard zinc plating. This is especially critical for construction equipment operating in Nigeria’s often humid and abrasive environments, where mud, water, and chemicals can rapidly degrade unprotected components. The coating also provides a consistent friction coefficient, which helps in achieving accurate torque-tension relationships during assembly – a key factor in preventing both under-tightening and over-tightening.
In typical ripper applications, the 805-338-284 is used under high-strength bolts (often M24) that secure the ripper shank to the tool beam or attach the ripper tooth to the shank. Its 24mm inner diameter fits M24 bolts perfectly, and its 44mm outer diameter offers a large bearing area, preventing the bolt head or nut from embedding into the relatively soft steel of the ripper shank or beam. This reduces the risk of joint loosening and extends the service life of both the fastener and the attachment.
Technical Specifications – Washer (Ripper) 805-338-284
| Parameter | Specification |
|---|---|
| OEM Part Number | 805-338-284 |
| Product Name | Washer (Ripper) – Heavy-duty flat washer |
| Brand | Sinotruk (Genuine OEM) |
| Inner Diameter (ID) | 24.5 mm (nominal for M24) |
| Outer Diameter (OD) | 44.0 mm |
| Thickness | 5.0 mm |
| Material | High-carbon spring steel (SAE 1074/1095) |
| Hardness | 40 – 45 HRC |
| Coating | Zinc-nickel (yellow passivation) |
| Corrosion Resistance | ≥ 720 hours salt spray (ISO 9227) |
| Flatness Tolerance | ≤ 0.05 mm |
| Application | Ripper shanks, teeth, pivot pins, heavy attachments |
| Compatible Models | Howo A7, T7, C7H, HW series; Sinotruk bulldozers, graders, excavators |
Why the Genuine Sinotruk 805-338-284 Outperforms Generic Washers
Generic washers are often made from low-grade steel that is not heat-treated, leading to rapid deformation under the extreme loads experienced during ripping. The 805-338-284, with its hardened spring steel construction and zinc-nickel coating, maintains its flatness and thickness even after thousands of impact cycles, ensuring consistent load distribution and preventing joint loosening. Its larger outer diameter (44mm) provides a significantly larger bearing area than generic washers, reducing the risk of embedment into the ripper shank material.
Moreover, the precise dimensions of the 805-338-284 guarantee that it will not interfere with the bolt threads or the bearing surface of the component being clamped. Generic washers often have oversized IDs or undersized ODs, which can lead to improper seating and uneven loading, increasing the risk of bolt loosening or component damage – a dangerous situation in heavy earthmoving equipment.
Advanced Material Science for Impact Resistance
The high-carbon steel used in the 805-338-284 is specifically selected for its ability to absorb shock loads without fracturing. Its fine-grained microstructure, achieved through controlled quenching and tempering, provides an optimal combination of hardness and toughness, allowing the washer to withstand the sudden jolts encountered when ripping through hard rock or compacted soil.
Compatibility and Fitment
The 805-338-284 is a direct replacement for the original ripper washer in a wide range of Sinotruk and Howo construction machines. Its dimensions are optimized for M24 bolts, with a 24.5mm ID that accommodates the nominal bolt diameter and a 44mm OD that fits standard heavy-duty flanged nuts and bolt heads. Always verify that the washer thickness (5.0mm) does not adversely affect thread engagement or clamp length in your specific application.
Explore the full range of genuine Howo Parts available for your fleet, including ripper components, fasteners, and undercarriage hardware. The 805-338-284 washer is an essential part of that ecosystem – and with Sinotruk’s original quality, you can be confident that every critical joint will be properly supported.
Installation Best Practices for the 805-338-284
Proper installation of the 805-338-284 is critical to ensure the safety and performance of your ripper assembly. Always place the washer directly under the bolt head or nut, with the smooth (or coated) side facing the bearing surface to minimise friction and galling. Ensure that the washer sits flat against the joint surface and that the bolt or nut can rotate freely without binding. Apply the recommended torque for the specific bolt size and grade (typically 1300–1500 Nm for M24 bolts), and re-torque after the initial run-in period to account for any settlement.
During routine maintenance, inspect the 805-338-284 for signs of deformation, corrosion, or cracking. If any washer shows signs of embedding or distortion, it should be replaced with a new 805-338-284 to maintain proper clamp force and load distribution.
Built for Nigeria – Unrivaled Reliability in Construction and Mining
Nigeria’s construction and mining sectors are among the most demanding in the world, with heavy equipment operating in extreme heat, high humidity, abrasive laterite soils, and constant vibration. The 805-338-284 is engineered to thrive in these conditions. Its hardened steel construction and corrosion-resistant coating ensure that it maintains its load-spreading capabilities and structural integrity, even after years of exposure to mud, water, and chemicals.
Furthermore, the large bearing area provided by the 805-338-284 helps prevent the bolt head from pulling into the ripper shank or beam – a common failure mode that can lead to costly downtime and safety hazards. By choosing the genuine Sinotruk 805-338-284, fleet operators can reduce maintenance frequency, extend the service life of their ripper attachments, and improve overall project productivity.
Secure Your Ripper Operations with the Genuine 805-338-284 Washer
The 805-338-284 Washer (Ripper) is a small but vital component that ensures the safety and effectiveness of your earthmoving equipment. Its superior material, precise dimensions, and exceptional corrosion resistance make it the definitive choice for professional workshops and construction companies. Every time you install a genuine Sinotruk 805-338-284, you are safeguarding your equipment, your workforce, and your project timelines.
Never compromise on critical attachment hardware. Insist on the genuine 805-338-284 – the washer trusted by experienced operators and maintenance teams across Nigeria. With its proven performance in the most demanding applications, this washer delivers the reliability and peace of mind you demand.
Genuine Sinotruk 805-338-284 – 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
Upgrade Your Sinotruk Truck Today with Howo parts!
Experience the difference with our premium quality parts. Designed for Nigeria’s unique challenges, they deliver unmatched performance, safety, and cost savings. Join countless satisfied customers who trust Sinotruk for their truck parts needs.
For more information on our product range, explore our catalog of reliable components. Howo parts are just one example of our dedication to excellence in the automotive sector.
Thank you for considering our products. We look forward to supporting your journey on Nigeria’s roads with quality and innovation.
