Original SANY Hexagon Flange Nut 160102120007A002 Construction Machinery Parts

The genuine SANY parts reference 160102120007A002 is the Hexagon Flange Nut, a high-strength locking nut with an integrated wide flange and serrated bearing face, used in SANY heavy machinery for critical bolted joints subject to vibration. The 160102120007A002 hexagon flange nut eliminates the need for separate washers and provides superior resistance to self-loosening.

Manufactured from case-hardened alloy steel (grade 10) with a zinc-flake coating, this nut delivers consistent clamp load and corrosion protection. Each 160102120007A002 unit is 100% inspected for thread conformity, flange dimensions, and hardness, guaranteeing reliable fastening in SRT dump trucks, SY excavators, SW wheel loaders, and motor graders.

Hexagon Flange Nut

Фланцевая гайка

Tuerca de brida hexagonal

Hexagon Flange Nut

Фланцевая гайка

Tuerca de brida hexagonal

Hexagon Flange Nut

Фланцевая гайка

Tuerca de brida hexagonal

Material and Design of Hexagon Flange Nut 160102120007A002

The hexagon flange nut 160102120007A002 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 an integral flange that is 1.5 times the nominal thread diameter, providing a large bearing area that reduces surface pressure on clamped components.

The underside of the flange features radial serrations (teeth) with a 45° angle. When tightened, these serrations bite into the mating surface, creating a positive lock that resists loosening under vibration. The flange eliminates the need for a separate flat or lock washer. The nut has a standard hexagon shape (width across flats 19 mm for M12) with rolled threads (tolerance 6H) for improved fatigue strength.

Surface treatment is a zinc‑flake coating (Geomet 500 or Delta Protekt) with integrated lubricant, thickness 8-12 µm. It provides 480 hours of neutral salt spray resistance (ASTM B117). The lubricant ensures a stable friction coefficient of µ=0.12-0.16 for accurate torque‑tension control. Each 160102120007A002 nut is laser-marked with the strength grade “10” and a batch code for traceability.

All 160102120007A002 nuts are 100% inspected: thread go/no-go, across-flats dimension, flange concentricity, and hardness. A sample from each heat treat 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 Nut 160102120007A002 in SANY Machinery

The hexagon flange nut 160102120007A002 is specified for high-vibration bolted joints across SANY equipment. Typical applications include wheel hub retention on SRT dump trucks, track chain bolts on SY excavators, and attachment points for hydraulic cylinders on SW loaders. The serrated flange prevents loosening even under severe shock loads.

On SANY diesel engines (D07/D09/D12 series), 160102120007A002 nuts secure the exhaust manifold studs, turbocharger mounting bolts, and injection pump brackets. In chassis applications, they are used on spring hanger bolts, steering linkage, and suspension arms. The nut’s high strength (grade 10) provides a safety margin for dynamic loads.

For engine rebuilds, always replace these nuts when the corresponding stud or bolt is removed. The serrations may be worn after one tightening cycle. Do not substitute with a plain hex nut plus lock washer – the integrated flange provides superior load distribution and locking action that a separate washer cannot match.

Compatible SANY Models & Interchange Information

The flange nut 160102120007A002 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.

Common thread sizes for 160102120007A002 include M10x1.5, M12x1.75, and M14x2.0. The part number as listed represents a specific thread size (M12x1.75). Always verify the original nut thread and flange diameter. When ordering, specify 160102120007A002 to receive the correct grade 10, serrated flange nut with zinc‑flake coating.

For fleet maintenance, stock genuine 160102120007A002 nuts. Aftermarket flange nuts often use grade 8 material or lack proper serrations, leading to loosening and joint failure. Genuine SANY nuts guarantee correct proof load, flange geometry, and corrosion resistance.

Technical Specifications – Hexagon Flange Nut 160102120007A002

Proper Installation of Hexagon Flange Nut 160102120007A002

Before installing the nut 160102120007A002, clean the bolt threads and the flange contact surface. Do not use a washer under this nut – the serrated flange is designed to bear directly on the mating part. Apply a light coat of clean engine oil to the threads unless the SANY manual specifies dry assembly.

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 or damage the serrations.

After torquing, mark the nut and adjacent surface. Recheck torque after 100 operating hours for critical joints (wheel hubs, suspension). If the nut has loosened (mark no longer aligns), replace it with a new 160102120007A002 – the serrations may be flattened. Never reuse a flange nut that has been tightened before; the locking serrations take a permanent set.

Store genuine 160102120007A002 nuts in a clean, dry environment. The zinc‑flake coating is durable but can be scratched. If the coating is damaged (bare steel visible), do not use the nut in corrosive environments. Always order sufficient quantity to complete the entire joint set.

Symptoms of a Damaged or Incorrect Nut 160102120007A002

A loose 160102120007A002 nut will cause rattling or clicking from the joint, visible gaps between components, or fluid leaks if the joint is gasketed. On wheel hubs, a loose nut can cause wheel wobble and uneven tire wear. On engine mounts, it leads to excessive vibration. Re‑torque to specification; if the nut continues to loosen, replace it.

Over‑torqued nuts may show thread distortion (bulging) or a cracked flange. A nut that has been stretched beyond yield will have reduced clamp load and may loosen rapidly. If you feel the torque wrench “spinning” without increasing torque, stop immediately. Replace the nut and inspect the bolt threads for damage.

Corrosion (red rust) on the nut body or flange indicates coating failure. This weakens the nut and may cause seizure. Replace all corroded nuts on that joint. For heavy rust, also inspect the bolt threads. Always use genuine 160102120007A002 nuts for replacement – never mix grades or types on the same joint.

Quality Assurance & Full Traceability for 160102120007A002

Every hexagon flange nut 160102120007A002 is produced in an IATF 16949 certified facility under SANY’s quality system. Production steps include wire rod analysis, cold forming, thread rolling, heat treatment (quench and temper), and zinc‑flake coating. In‑process checks monitor hardness, thread dimensions, and flange runout.

Final inspection includes 100% optical sorting for hex size, flange diameter, and thread presence. 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, and friction coefficient is measured on a torque-tension tester. A laser‑etched batch code on the nut face provides traceability to material cert, heat treat batch, and coating line.

For bulk orders, SANY supplies a Certificate of Conformance (CoC) confirming that all 160102120007A002 nuts meet ISO 898-2 class 10, flange geometry per DIN 6923, and coating requirements. Independent third‑party audits ensure compliance with ISO 9001:2015 and IATF 16949. Use only genuine SANY nuts for guaranteed locking performance.

Field Performance of Genuine SANY Hexagon Flange Nut

Field data from SANY equipment operating in Australian mines and Canadian oil sands shows that genuine 160102120007A002 nuts maintain clamp load for over 10,000 operating hours in high-vibration environments. The serrated flange provides effective locking without damaging the mating surface, and the zinc‑flake coating resists corrosion in salt-spray conditions.

Aftermarket flange nuts often use grade 8 material or lack full serrations, resulting in loosening within 2,000 hours. Genuine SANY nuts exhibit consistent proof load and locking torque. Fleet owners report 90% fewer wheel nut loosening incidents after switching to 160102120007A002 nuts.

To maximize service life, always replace nuts that have been removed (the serrations are a one-use locking feature). Use a torque wrench, not an impact gun. Store spares in a dry cabinet. Following these practices ensures reliable fastening and eliminates loosening‑related downtime.