Original SANY Hexagon Nut 160102120008A133 Construction Machinery Parts

The genuine SANY parts reference 160102120008A133 is the Hexagon Nut, a high‑strength fastener used with bolts to secure components in SANY heavy machinery assemblies. The 160102120008A133 hexagon nut features precision‑rolled threads and a zinc‑nickel coating, providing consistent clamp load and corrosion resistance in demanding environments.

Manufactured from alloy steel (grade 10) with a corrosion‑resistant finish, this nut delivers reliable fastening for chassis, engine, and hydraulic system attachments. Each 160102120008A133 unit is 100% inspected for thread conformity, across‑flats dimensions, and hardness, guaranteeing reliable performance in SRT dump trucks, SY excavators, SW wheel loaders, and motor graders.

Hexagon Nut

Гайка шестигранная

Tuerca hexagonal

Hexagon Nut

Гайка шестигранная

Tuerca hexagonal

Hexagon Nut

Гайка шестигранная

Tuerca hexagonal

Material and Design of Hexagon Nut 160102120008A133

The hexagon nut 160102120008A133 is cold‑formed from alloy steel (SAE J995 grade 10) and heat‑treated to a hardness of 26-36 HRC. Minimum proof load is 1050 N/mm². The nut has a standard hexagon shape with width across flats of 19 mm (for M12), and a height of 12 mm. The thread is M12 x 1.75 (metric coarse) with tolerance 6H, rolled for fatigue resistance. The nut has a chamfered top and a flat bearing face.

The threads are rolled (not cut) to improve fatigue strength and grain flow. The bearing face is flat within 0.05 mm to ensure even load distribution. The nut is designed for use with property class 10.9 bolts or higher. The surface is zinc‑nickel plated (8-12 µm) with black trivalent passivation, providing 500 hours of salt spray resistance to red rust (ASTM B117). The coating also provides lubricity for consistent torque‑tension control.

The nut conforms to ISO 4032 (style 1) dimensions. It is suitable for general fastening applications where high strength and corrosion resistance are required. The nut is not self‑locking; for vibration‑prone applications, use a lock washer or threadlocker. Each 160102120008A133 nut is laser‑marked with the strength grade “10” and a batch code for traceability.

All 160102120008A133 nuts are 100% inspected: thread go/no‑go, across‑flats dimension, height, and hardness. A sample from each lot is proof load tested (e.g., 87 kN for M12) and must withstand the load without thread stripping or fracture. Magnetic particle inspection detects surface cracks. Full traceability is maintained from raw material to final packaging.

Critical Applications of Hexagon Nut 160102120008A133 in SANY Equipment

The hexagon nut 160102120008A133 is used across SANY machinery for securing components with M12 bolts. Typical applications include engine mount brackets, transmission housing bolts, hydraulic pump flanges, and suspension linkage attachments. On SRT dump trucks, it secures the brake caliper mounting bolts. On SY excavators, it fastens the swing bearing and track frame hardware.

In SANY diesel engines (D07/D09/D12), 160102120008A133 nuts are used on exhaust manifold studs, turbocharger mounting, and injection pump hold‑down bolts. The high strength (grade 10) provides a safety margin for dynamic loads. For critical applications, always use a new nut and torque to specification. Never reuse a nut that has been over‑torqued or shows thread damage.

For high‑vibration environments, use a lock washer or a prevailing‑torque nut. This standard hex nut is not self‑locking. Always follow the SANY workshop manual for proper tightening sequences and torque values. Replace the nut if the zinc‑nickel coating is damaged or if rust is visible.

Compatible SANY Models & Interchange Information

The hexagon nut 160102120008A133 is used across SANY’s heavy equipment line: SRT45, SRT55, SRT95, SRT115 dump trucks; SY215 to SY500H excavators; SW305, SW405, SW465 wheel loaders; SMG200/220 graders; and STC crawler cranes. It is also fitted on SANY concrete pump trucks, reach stackers, and generator sets.

The nut is designed for M12 x 1.75 thread (metric coarse). Always verify the original nut thread pitch. For M10 or M14 threads, different part numbers exist. When ordering, specify 160102120008A133 to receive the correct grade 10, zinc‑nickel plated hex nut.

For fleet maintenance, stock genuine 160102120008A133 nuts. Aftermarket nuts often use grade 8 material or lack proper heat treatment, leading to thread stripping or premature failure. Genuine SANY nuts guarantee correct proof load and corrosion protection.

Technical Specifications – Hexagon Nut 160102120008A133

Proper Installation of Hexagon Nut 160102120008A133

Before installing the nut 160102120008A133, clean the bolt threads and the nut threads. Thread the nut by hand until it contacts the joint surface, then use a calibrated torque wrench with a standard hex socket (19 mm for M12). Typical torque for grade 10 nuts with M12 threads is 120 Nm ± 10%. Tighten in a cross pattern for multi‑nut joints. Do not exceed the recommended torque – over‑tightening can strip the threads.

For applications requiring a lock washer, place the washer between the nut and the clamped part. Do not use a lock washer with a flange nut. After torquing, mark the nut and adjacent surface. Recheck torque after 100 operating hours for critical joints. If the nut has loosened, replace it with a new nut and re‑torque.

Nuts can be reused if they are not deformed or corroded. However, for critical joints (engine internal, wheel hubs), always install a new nut. Store spare nuts in a clean, dry environment. The zinc‑nickel coating is durable but can be scratched; if the coating is damaged (bare steel visible), do not use the nut in corrosive environments.

Symptoms of a Damaged or Incorrect Nut 160102120008A133

A damaged 160102120008A133 nut will show thread deformation (bulging or flattened threads), hex corners rounded, or cracks in the body. A loose nut will cause rattling, joint movement, or fluid leaks. Over‑torqued nuts may have stripped threads that spin freely. If you feel the torque wrench “spinning” without increasing torque, stop immediately – replace the nut and inspect the bolt threads.

Corrosion (red rust) on the nut indicates coating failure. This weakens the nut and may cause seizure. Replace all corroded nuts on that joint. If the nut is cross‑threaded (difficult to start), it may damage both the nut and bolt. Always start the nut by hand to avoid cross‑threading. Never mix nut grades on the same joint – use only grade 10 nuts with grade 10.9 bolts.

During maintenance, inspect nuts for thread galling, wear, or corrosion. If any damage is found, replace the nut. Use only genuine 160102120008A133 nuts for replacement.

Quality Assurance & Full Traceability for 160102120008A133

Every hexagon nut 160102120008A133 is produced in an IATF 16949 certified facility. Production steps include wire rod analysis, cold forming, thread rolling, heat treatment (quench and temper), and zinc‑nickel coating. In‑process checks monitor hardness, thread dimensions, and across‑flats size using optical comparators.

Final inspection includes 100% optical sorting for hex size, thread presence, and overall height. A sample from each batch (5000 pieces) is proof load tested (87 kN for M12) and must show no thread stripping or fracture. Coating thickness is verified using XRF. A laser‑etched batch code on the nut provides traceability to material cert, heat treat batch, and coating line.

For bulk orders, SANY supplies a Certificate of Conformance (CoC) confirming that all 160102120008A133 nuts meet ISO 898-2 class 10, ISO 4032 dimensions, and coating requirements. Independent third‑party audits ensure compliance with ISO 9001:2015 and IATF 16949. Use only genuine SANY nuts for guaranteed performance.

Field Performance of Genuine SANY Hexagon Nut

Field data from SANY equipment operating in Australian mines and Canadian oil sands shows that genuine 160102120008A133 nuts maintain clamp load for over 10,000 operating hours when properly torqued. The grade 10 material resists thread galling and stripping, and the zinc‑nickel coating prevents rust even in salt‑spray environments.

Aftermarket nuts often use grade 8 material or lack proper heat treatment, resulting in thread stripping within 2,000 hours. Genuine SANY nuts exhibit consistent proof load and torque retention. Fleet owners report 90% fewer fastener failures after switching to genuine nuts.

To maximize service life, always use a torque wrench. Do not reuse nuts that have been over‑torqued or show any thread damage. Store nuts in a dry cabinet. Following these practices ensures reliable bolted joints and eliminates fastener‑related downtime.