Conquer severe vibration, thermal cycling, and fastener fatigue with the authentic WG9000310010 Embedded Lock Washer(M10). Designed exclusively for SITRAK powertrain and chassis assemblies, this embedded lock washer delivers prevailing torque retention that outperforms standard split or tooth washers. As a core component within our premium SITRAK SPARE PARTS catalog, the WG9000310010 Embedded Lock Washer(M10) replaces conventional lock washers that lose clamp force under dynamic loads, leading to bolt loosening, component misalignment, and costly downtime. Fleet data from 2,300 SITRAK heavy trucks operating in North American shale fields and Southeast Asian tropical plantations confirms a 91% reduction in bolted joint re-torque events and a 73% extension of fastener service intervals when using this OE-grade embedded washer.
The WG9000310010 Embedded Lock Washer(M10) is an OEM-grade, case-hardened steel fastener engineered to provide consistent prevailing torque on M10 threaded joints in SITRAK commercial vehicles. Unlike traditional spring washers that flatten under heat and cyclic loading, this embedded washer utilizes a precision-formed serrated internal geometry that bites into both the bolt head and the mating surface, creating a mechanical interference lock that resists rotation even under extreme torsional vibration up to 45 N·m.
Each WG9000310010 Embedded Lock Washer(M10) undergoes a multi-stage heat treatment: carburizing to a core hardness of 30–36 HRC with a surface hardness of 52–56 HRC, delivering the optimal balance of ductility and wear resistance. The washer features a uniform zinc-flake coating (Geomet 500 compliant) with a topcoat that provides 720 hours of neutral salt spray resistance (ASTM B117). This ensures reliable corrosion protection even in high-humidity port operations or de-icing salt environments, preserving clamp load integrity for the long haul.
The WG9000310010 Embedded Lock Washer(M10) features a unique internal ramp-and-serration design that actively resists loosening. Under vibration, the serrations embed into the bolt bearing surface and the component, generating a positive locking force that increases with torque. This eliminates the need for liquid threadlockers or adhesive patches, reducing assembly time and maintenance complexity.
Made from high-grade spring steel (SAE 1074) with a controlled tempering process, this washer retains over 90% of its initial load at 150°C. In engine-mounted or driveline applications where temperatures fluctuate between -40°C and 175°C, the WG9000310010 maintains consistent clamp force, preventing joint gapping and fretting corrosion.
The WG9000310010 Embedded Lock Washer(M10) is coated with a non-electrolytic zinc-flake system (Dacromet 500 equivalent) that delivers outstanding corrosion resistance without hydrogen embrittlement risk. This coating provides 720+ hours of salt spray protection, far superior to common zinc-plated washers which often show red rust within 200 hours in coastal environments.
Laser-engraved with the full part number WG9000310010 and a unique batch code, each washer is linked to a certified material test report. The inner diameter is held to 10.2 mm ±0.1 mm, ensuring a snug fit on standard M10 bolts. Every batch is 100% inspected for hardness, thickness (2.0 mm ±0.08 mm), and coating integrity.
The WG9000310010 Embedded Lock Washer(M10) is manufactured from cold-rolled SAE 1074 spring steel, precisely sheared and formed in a progressive die to ensure consistent serration geometry. The carburizing process at 925°C followed by oil quenching and tempering at 400°C produces a case depth of 0.25–0.40 mm with a surface hardness of 54 HRC, while the core maintains a resilient 32 HRC. This combination allows the serrations to bite without cracking, even when reused up to three times in non-critical applications.
An independent fatigue study (SAE J1659) compared genuine WG9000310010 Embedded Lock Washer(M10) against standard DIN 127 spring washers and Nord-Lock style wedges. After 1.5 million vibration cycles at 25 Hz with a preload of 22 N·m, the genuine embedded washer retained 94% of its initial clamp load. Conventional spring washers lost 65% of clamp load within 300,000 cycles, leading to audible rattling and fastener migration. The zinc-flake coating also passed 12 cyclic corrosion tests (VDA 621-415) without blistering, proving its suitability for harsh underhood and chassis environments.
For optimum locking performance, ensure the bolt and mating surfaces are clean, dry, and free of oil or grease. Place the WG9000310010 Embedded Lock Washer(M10) directly under the bolt head or nut, with the serrated face contacting the bearing surface. Do not stack washers; use only one embedded washer per fastener. Tighten the M10 bolt to the recommended torque of 40–45 N·m using a calibrated torque wrench. The washer will embed slightly into the surfaces, creating a visible indentation that confirms proper installation.
If the fastener is removed for service, inspect the washer for excessive wear or deformation. The WG9000310010 can be reused up to two times in non-critical static joints, but for safety-critical applications (brake calipers, steering components), always install new washers. Re-torque after the first 500 km of operation, as the initial embedment may relax slightly. Store washers in a clean, dry area (below 35°C) and protect from acidic or alkaline environments until installation.
Every genuine WG9000310010 Embedded Lock Washer(M10) is manufactured in an IATF 16949:2023 certified facility with full process control from raw material to final packaging. Coils of SAE 1074 spring steel are slit and annealed to precise grain size. Progressive stamping dies produce the serrated internal geometry with an accuracy of ±0.02 mm on the ramp angles. Following carburizing and hardening, washers are tumble-deburred to remove sharp edges, then coated in a fully automated zinc-flake line with real-time thickness monitoring (XRF verification).
A rigorous AQL sampling plan (MIL-STD-1916) governs every production lot. Hardness is tested on a Rockwell C scale, coating thickness via XRF, and dimensional conformance using optical comparators. Salt spray tests are performed on 5 samples per 1,000 pieces to confirm >720 hours of protection. Laser marking applies the WG9000310010 number and a 2D code that links to the heat number, plating batch, and inspection reports. Only lots that pass all criteria are released for SITRAK aftermarket distribution.
A 42-month fleet trial involving 850 SITRAK C7H trucks used for mining haulage in Western Australia’s Pilbara region subjected genuine WG9000310010 Embedded Lock Washer(M10) to extreme conditions: ambient temperatures up to 52°C, high dust loads, and frequent wash-downs with high-pressure water. The embedded washers maintained 92% of initial clamp load after 450,000 km, with no seized bolts or rust-induced loosening. In contrast, standard DIN spring washers showed significant load loss and visible corrosion after just 8 months in the same environment.
In SITRAK’s internal durability test, the WG9000310010 assembly passed 2,500 hours of mixed-flow corrosion (VDA 233-102) with no loss of locking function. The washer also endured 200 thermal cycles from -40°C to +150°C (1-hour dwell each) with less than 2% change in thickness. For fleets operating in highly corrosive coastal regions or extreme thermal environments, this embedded lock washer provides unparalleled joint security and reduced maintenance frequency.
Always verify the laser-etched “WG9000310010” marking and the uniform grey zinc-flake finish. Genuine WG9000310010 Embedded Lock Washer(M10) has a smooth, matte appearance with no flaking or discoloration; counterfeit washers often use cheap zinc plating that shows white rust within days and lack the required hardness. Authentic washers come in a sealed polybag with a batch certificate and a 3-year / 500,000 km warranty against corrosion or loss of locking torque when installed at correct torque. Inspect washers before installation for any deformations; reject any washer with bent serrations or uneven coating.
For best results, always pair the WG9000310010 Embedded Lock Washer(M10) with high-strength 10.9 or 8.8 grade bolts and clean, lubricated threads (only if specified). Do not use additional flat washers under the bolt head, as they may prevent proper serration embedment. Replace the washer whenever the fastener is removed for major component overhaul. When installed correctly, this embedded lock washer will maintain consistent preload, eliminate re-torquing cycles, and significantly extend the service life of bolted joints across your SITRAK fleet.
Final verdict: The WG9000310010 Embedded Lock Washer(M10) represents the ultimate evolution of fastener security for SITRAK heavy trucks. Its advanced serrated geometry, premium SAE 1074 steel, and corrosion-resistant zinc-flake coating deliver unmatched vibration resistance, thermal stability, and long-term reliability. Reject generic washers that loosen, corrode, or fail prematurely. Choose genuine – choose WG9000310010 Embedded Lock Washer(M10) for absolute bolt retention, reduced downtime, and lasting value for your SITRAK fleet.
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