The genuine XCMG double-ended stud 800164328 is a precision‑engineered high‑strength fastener designed for critical bolted connections in XCMG articulated dump trucks. This heavy‑duty stud provides secure, vibration‑resistant clamping for cylinder head assemblies, axle housings, and chassis components.
Manufactured from premium alloy steel with rolled threads on both ends, the 800164328 double-ended stud delivers consistent clamp load and exceptional fatigue resistance under extreme operating conditions. The stud features a plain central shank that eliminates stress risers, ensuring reliable performance in mining and heavy construction environments.
The 800164328 double-ended stud is fully compatible with XCMG articulated dump trucks including XDA30, XDA40, XDA45U, XDA60E, and XDA70 series. It is commonly used for securing timing gear covers, fuel pump brackets, and turbocharger mounting flanges on the Mercedes‑Benz OM460LA engine platform.
The following table provides complete technical specifications for the XCMG 800164328 double-ended stud, meeting all original equipment manufacturer standards for heavy‑duty fastener applications.
The 800164328 double-ended stud is manufactured from premium 40Cr (AISI 5140) alloy steel, specifically selected for its excellent hardenability, fatigue strength, and resistance to stress corrosion cracking. The steel composition includes controlled levels of chromium (0.8–1.1%), manganese (0.6–0.9%), and molybdenum (0.15–0.25%) to achieve the optimal mechanical properties for heavy‑duty fastener applications.
The manufacturing process begins with precision cold heading or CNC turning from certified raw bar stock. The blank then undergoes a multi‑stage heat treatment: austenitizing at 850°C, oil quenching, and tempering at 550°C to achieve a tempered martensitic structure with core hardness of 32–39 HRC. This heat treatment delivers the required property class 10.9 rating (minimum tensile strength 1040 MPa).
The threads on both ends are formed via precision thread rolling rather than cutting. Rolling produces work‑hardened thread flanks with up to 40% greater fatigue strength compared to cut threads. The threads also have a smoother surface finish (Ra ≤ 0.8 µm) which reduces stress risers. The central shank is left undersized (9.0 mm diameter) to create a controlled stress relief zone, preventing crack initiation under cyclic loading.
After thread rolling, the double-ended stud receives a zinc‑nickel alloy plating with trivalent passivation. This coating provides exceptional corrosion protection, rated to exceed 500 hours of salt spray exposure per ASTM B117. A post‑plate baking process (190°C for 4 hours) eliminates the risk of hydrogen embrittlement, ensuring the fastener remains safe for high‑load applications. Quality control includes 100% magnetic particle inspection (MPI) for surface and subsurface cracks, and GO/NO‑GO thread gauge verification.
The OEM double-ended stud 800164328 is a direct replacement for original equipment on the full range of XCMG articulated dump trucks powered by Mercedes‑Benz OM460LA engines. The XDA45U model—a 41‑tonne payload articulated dump truck—uses these studs extensively for mounting the timing gear cover, high‑pressure fuel pump bracket, turbocharger support flange, and various engine accessory brackets.
The OM460LA engine is a 6‑cylinder, 12.8‑litre diesel producing 360 kW at 1900 rpm and 2,300 N·m of torque at 1300 rpm. The intense vibrations and thermal cycling of this powerplant place exceptional demands on fastener integrity. The 800164328 double‑ended stud provides reliable clamping force retention, eliminating the risk of loosening or fatigue failure over thousands of operating hours.
Beyond the OM460LA engine, the 800164328 stud is also used in other XCMG drivetrain components such as transmission mounting brackets and axle housing covers. Models including XDA30, XDA40, XDA60E, and XDA70 all utilise this fastener, making it a standardised part across the fleet. Field data from mining operations shows that genuine 800164328 studs achieve service life exceeding 12,000 hours with no thread stripping or corrosion, while aftermarket copies often fail at 4,000–6,000 hours due to material fatigue or hydrogen embrittlement.
Proper installation of the 800164328 double-ended stud is essential for achieving maximum clamping force and service life. Before installation, inspect the threaded bores in the engine block or component housing for damage, debris, or corrosion. Clean the bores using a thread tap and solvent, ensuring no old thread locker or dirt remains.
Apply a thin film of medium‑strength thread locker (Loctite 243 or equivalent) to the longer threaded end of the stud—this is the end that will be permanently installed into the blind hole. Thread the stud into the component by hand until it bottoms out lightly. Use a double‑nut jamming method to tighten the stud: thread two nuts onto the exposed end, jam them together, then torque the stud to 10–15 Nm to ensure it is fully seated without over‑stressing the threads.
After the stud is installed, remove the jam nuts. Place the mating component (e.g., timing cover, bracket) over the stud, then install a flanged nut or washer + nut combination. Torque the nut to the specification: 40–50 Nm (30–37 ft·lb) using a calibrated torque wrench, with light engine oil lubrication on the threads and nut bearing face. Do not exceed 60 Nm to avoid thread stripping or stud yielding.
For applications subject to high vibration (engine‑mounted accessories), use a prevailing‑torque nut or apply thread locker to the outer nut. Re‑torque all stud nuts after the first 250 operating hours. Always replace studs when disassembling components, as thread wear and stress relaxation reduce clamp load if reused.
Laboratory testing of the 800164328 double-ended stud was conducted in accordance with ISO 898‑1 for mechanical properties of fasteners. Proof load testing confirmed a minimum load of 830 MPa with zero permanent deformation. Tensile testing produced an average ultimate strength of 1080 MPa, exceeding the 10.9 class requirement. Fatigue testing (10 million cycles at 60% of proof load) showed no crack initiation or thread damage.
Field trials on XCMG XDA45U articulated dump trucks operating in Australian iron ore mines and Indonesian coal mines involved 50 vehicles over 12 months. The genuine 800164328 studs showed no signs of loosening, thread galling, or corrosion after 8,000–10,000 operating hours. By comparison, aftermarket studs of the same specification exhibited thread seizure at 3,000–4,000 hours due to poor plating and hydrogen embrittlement, leading to broken studs and component damage.
Corrosion testing per ASTM B117 placed zinc‑nickel plated 800164328 studs in a 5% salt spray chamber for 500 hours. No red rust or white corrosion products were observed. Thermal cycling between -40°C and +150°C for 500 cycles produced no coating delamination or dimensional change, confirming suitability for Arctic mining and high‑temperature engine environments.
Aftermarket double-ended studs pose significant risks to engine reliability and safety. Non‑genuine fasteners are often made from lower‑grade carbon steel (grade 8.8 or lower), have cut threads that create stress risers, lack proper heat treatment, and use inferior plating that does not prevent hydrogen embrittlement. The consequences include thread stripping under load, stud fracture due to fatigue, loosening from vibration leading to component misalignment, and corrosion seizure that damages expensive engine housings during disassembly.
Genuine XCMG 800164328 double-ended studs offer full material traceability from certified steel suppliers, documented heat treatment records, 100% thread rolling verification, magnetic particle crack inspection, and a 12‑month warranty against manufacturing defects. Each stud is batch‑tested for tensile strength, yield strength, hardness, and corrosion protection thickness. Using genuine XCMG studs preserves engine warranty and ensures the safety of your articulated dump truck fleet.
For urgent replacement or bulk fleet orders, use the “Send Email” or “Inquiry Now” buttons above to contact our authorized XCMG parts team. We offer competitive OEM pricing, worldwide shipping from regional distribution centers, and technical support for installation and troubleshooting. Protect your XCMG articulated dump truck investment—choose only genuine OEM 800164328 double-ended studs for reliable, long‑lasting fastening performance.
