OEM 61000152 Hexagon Bolt – Genuine SANY High‑Strength Fastening Solution

The genuine SANY parts reference 61000152 is a high‑strength hexagon bolt, a precision‑engineered threaded fastener designed for critical bolted joints in SANY heavy‑duty trucks, excavators, and construction machinery. The 61000152 bolt provides reliable clamp load under dynamic loads and extreme vibration, ensuring structural integrity in engine assemblies, chassis connections, and transmission mounts. Manufactured from micro‑alloyed chromium‑molybdenum steel with rolled threads and a controlled friction surface, the 61000152 hexagon bolt delivers consistent preload, exceptional fatigue resistance, and long‑term corrosion protection. Each 61000152 unit is 100% inspected for dimensional accuracy, tensile strength, and surface integrity, guaranteeing reliable performance in SRT dump trucks, SY excavators, and SW wheel loaders.

As a versatile fastening element, the 61000152 bolt is used in critical applications such as engine mounting brackets, transmission supports, axle clamps, and steering linkage connections. It is manufactured to property class 10.9, delivering minimum tensile strength of 1,040 MPa and excellent resistance to thread stripping. The bolt features a rolled thread profile that eliminates stress risers, a precision‑ground underhead fillet that minimizes stress concentration, and a zinc‑plated finish that provides ≥100 hours of salt spray resistance. Each 61000152 hexagon bolt is 100% inspected, guaranteeing reliable performance in SRT dump trucks, SY excavators, and SW wheel loaders operating in the most demanding mining, construction, and material handling environments.

Bolt, Hexagon

Болт с шестигранной головкой

Perno Hexagonal

Metallurgical Design of Hexagon Bolt 61000152

The hexagon bolt 61000152 is manufactured from chromium‑molybdenum alloy steel (42CrMo4 / AISI 4140 equivalent). The material is heat‑treated to achieve property class 10.9 according to ISO 898-1. This provides a minimum tensile strength of 1,040 MPa and a yield strength of 940 MPa. The micro‑alloyed chemistry ensures a uniform martensitic microstructure after quenching and tempering, delivering high load‑bearing capacity and ductility for fasteners subject to cyclic fatigue. The material composition is verified by spectrographic analysis for each production batch.

The threads of the 61000152 bolt are rolled after heat treatment, not cut. Rolling work‑hardens the thread flanks and induces beneficial compressive residual stresses at the thread roots, dramatically increasing the bolt’s fatigue endurance limit – critical for applications where the fastener experiences millions of alternating load cycles. The thread rolling also yields a smoother surface finish (Ra ≤ 0.8 µm), reducing friction scatter and ensuring consistent torque‑tension conversion during assembly.

The 61000152 bolt features a precision‑ground underhead fillet radius that minimizes stress concentration at the head‑shank junction – a known initiation site for fatigue cracks. The bearing surface is manufactured flat and perpendicular to the thread axis to distribute clamp load evenly. A small pilot chamfer guides the bolt into the threaded hole and protects the threads from cross‑threading damage. The bolt head is typically marked with the SANY logo and property class identification for easy verification during service.

A mechanically applied zinc coating (blue passivated) protects the 61000152 bolt from corrosion in humid, salty, or chemically contaminated environments. This plating system provides ≥100 hours of salt spray resistance per ASTM B117 and eliminates the risk of hydrogen embrittlement that can affect electroplated high‑strength fasteners. The coating also provides a stable friction coefficient of 0.12‑0.16 when lubricated with engine oil, ensuring consistent clamp load versus torque relationships.

All 61000152 bolts are 100% inspected for dimensional accuracy using precision gauges and automated optical systems. Each bolt is ultrasonically tested for internal voids and magnetic particle inspected for surface cracks. A batch code is laser marked on the bolt head, providing full traceability to the original heat treat lot and manufacturing records.

Machine Compatibility & Critical Applications

The hexagon bolt 61000152 is used across SANY D09 and D12 series diesel engines, as well as in chassis and structural assemblies. It is found in SRT dump trucks (SRT45, SRT55, SRT95, SRT115), wheel loaders (SW405, SW435, SW465, SW305), crawler excavators (SY215, SY335, SY395, SY500), and motor graders (SMG200, SMG220). It is also installed on SANY concrete pump trucks, crawler cranes, and heavy forklifts.

Typical applications include securing engine mounting brackets, transmission supports, axle clamps, steering linkage connections, and structural frame members. The bolt is also used for fuel injector clamps, cover plates, and accessory mounts. Its high strength and corrosion resistance make it ideal for both internal engine and external chassis applications.

In the D12 engine platform (12.13 liters displacement, 131 mm bore, 150 mm stroke), the 61000152 bolt may be used in the front end cover group or mounting the oil‑gas separator bracket. The bolt’s precise rolled threads and consistent friction coefficient ensure that the clamp load is maintained even under the high‑frequency vibrations typical of heavy machinery.

For complete joint reliability, the 61000152 hexagon bolt must be used together with genuine SANY nuts, washers, and mating components. When servicing an assembly, always replace the bolt if it is a torque‑to‑yield type. Never reuse a bolt that shows signs of thread damage, corrosion, or deformation.

Technical Specifications – Hexagon Bolt 61000152

Correct Installation of Hexagon Bolt 61000152

When installing the hexagon bolt 61000152, begin by cleaning the bolt threads and the mating threaded hole. Remove debris, old thread locker, or oil residue that could affect torque readings. Apply a small amount of clean engine oil or light assembly lubricant to the threads and the underside of the head to achieve a stable friction coefficient. Never use grease or sealants unless specified by the SANY workshop manual.

Always use new 61000152 bolts – never reuse old bolts, especially if they are torque‑to‑yield fasteners. For standard applications, tighten to the torque value specified in the SANY workshop manual using a calibrated torque wrench. Tighten in a crossing or star pattern when multiple bolts are used on a flange. Do not over‑tighten, as this can strip threads or cause head failure.

After the assembly has been run through one thermal cycle, re‑torquing may be required for certain applications – refer to the SANY workshop manual for specific instructions. Never attempt to re‑tighten a bolt that has been installed with a torque‑angle procedure, as this can exceed the material’s yield point. If any bolt shows signs of thread damage or corrosion, discard it and use a new genuine 61000152 bolt.

Store unused bolts in their original packaging in a clean, dry environment. If a bolt is dropped or shows any visible damage, do not use it. The critical nature of the 61000152 bolt means that any compromise can lead to component failure. Always follow the SANY workshop manual for the exact tightening procedure specific to your engine model and application.

Consequences of Improper Bolt Installation

Improper installation of the hexagon bolt 61000152 can lead to severe equipment damage. Under‑tightening results in insufficient clamp load, allowing joint movement under vibration. This leads to fastener loosening, fretting, and eventual bolt failure. Over‑tightening can stretch the bolt beyond its yield point, causing thread damage or fracture, or distorting the clamped components.

Symptoms of loose or failed bolts include abnormal noise (rattling or knocking) from the affected assembly, fluid leaks from gasketed joints, and visible movement of components. In structural applications, loose bolts can lead to progressive joint failure and catastrophic equipment breakdown. In engine applications, a loose 61000152 bolt can cause oil leaks, loss of compression, or damage to the timing system.

During engine disassembly, always discard old bolts – do not attempt to reuse them. The permanent stretch or thread wear means that original clamp characteristics cannot be restored. Using genuine SANY bolts 61000152 ensures that the material properties, heat treatment, and geometry match the engine’s design requirements. Aftermarket bolts may have different friction coefficients or yield points, leading to incorrect clamp load even when the same torque procedure is followed.

Quality Assurance & Full Traceability

Every hexagon bolt 61000152 is manufactured in an IATF 16949 certified facility under SANY’s rigorous quality management system. The production process includes raw material spectrographic analysis, in‑process dimensional verification using precision gauges, and 100% magnetic particle inspection for surface cracks. A sample from each heat treatment batch undergoes tensile testing, wedge load testing, and hardness verification (32–39 HRC core hardness).

The threads of the 61000152 bolt are inspected for profile accuracy using optical comparators and go/no‑go gauges. The underhead fillet radius is verified for surface finish and the absence of grinding burns. Coating thickness and adhesion are verified using X‑ray fluorescence (XRF) analyzers and cross‑cut tape tests per ASTM D3359. The bolt’s elongation characteristics are tested to confirm consistent performance.

Each 61000152 bolt is laser marked with the SANY logo, property class, and a unique batch code that links to the raw material certificate, heat treat chart, and final inspection records. For bulk orders, a Certificate of Conformance (CoC) is provided, certifying that the bolts meet all SANY OEM specifications for tensile strength, hardness, dimensional accuracy, and surface finish. Independent third‑party audits ensure continuous compliance with ISO 9001:2015 and IATF 16949 standards.

Field Performance of Genuine SANY Hexagon Bolt

Field data from SANY dump trucks and excavators operating in Australian iron ore mines and South African quarries shows that genuine 61000152 hexagon bolts installed with the correct torque procedure achieve zero failure rates over the engine’s service life exceeding 25,000 operating hours. Aftermarket or reused bolts have been responsible for numerous joint failures due to under‑torquing, over‑torquing, or material fatigue.

The superior reliability of the genuine SANY bolt comes from the premium alloy steel, the precisely controlled heat treatment that provides consistent yield characteristics, and the rolled threads that eliminate stress risers at the thread roots. The consistent clamp load provided by the 61000152 bolt ensures that gaskets maintain proper compression, preventing fluid leaks and maintaining joint integrity.

Fleet owners report a significant reduction in fastener‑related downtime after standardizing on genuine SANY hexagon bolts. The corrosion‑resistant zinc plating also prevents thread seizure, making future disassembly easier and reducing the risk of bolt breakage during maintenance. To maximize service life, always replace bolts whenever a joint is disassembled. The low cost of a new bolt is far outweighed by the cost of a failed joint.