Original SANY Hexagon Flange Bolt 160101090035B172 Construction Machinery Parts

The genuine SANY parts reference 160101090035B172 is the Hexagon Flange Bolt, a high-strength fastener designed for critical bolted joints in SANY heavy machinery. The 160101090035B172 flange bolt integrates a wide serrated flange that distributes clamping load and prevents loosening under vibration.

Manufactured from alloy steel (grade 10.9) with a zinc‑flame coating, this bolt delivers exceptional tensile strength and corrosion resistance. Each 160101090035B172 unit is 100% tested for hardness, torque consistency, and thread accuracy, ensuring reliable assembly in SRT dump trucks, SY excavators, SW loaders and motor graders.

Hexagon Flange Bolt

Фланцевый болт с шестигранной головкой

Perno de brida hexagonal

Material & Design of Hexagon Flange Bolt 160101090035B172

The Hexagon Flange Bolt 160101090035B172 is made from chromium‑molybdenum alloy steel (SCM435 or 35CrMo equivalent), quenched and tempered to achieve property class 10.9. Minimum tensile strength is 1040 MPa, yield strength 940 MPa, and hardness 32‑39 HRC. The flange is cold‑formed integrally with the bolt head, eliminating any weak joint.

The flange of 160101090035B172 has a diameter 1.5 times the nominal thread size, with radial serrations on the underside. These serrations bite into the mating surface, providing a positive locking effect that resists loosening under dynamic loads. The thread is rolled (not cut) to improve fatigue strength and grain flow, meeting ISO 965-2 standard.

Surface treatment is a zinc‑flame coating (Geomet or Delta Protekt equivalent) with integrated lubricant. Coating thickness 8‑12 μm, providing 480 hours of salt spray resistance (ASTM B117). The lubricant ensures consistent friction coefficient (µ=0.12‑0.16) for accurate torque‑tension control. Each 160101090035B172 bolt is batch‑coded on the head.

All 160101090035B172 bolts are 100% inspected for thread go/no‑go, head height, flange concentricity, and hardness. A sample from each lot is tested in a tensile machine to verify proof load (min 94 kN for M12 x 1.75). The bolts are also magnetic particle inspected for surface cracks. Full traceability to heat treat batch and coating line is maintained.

Critical Applications in SANY Equipment

The Hexagon Flange Bolt 160101090035B172 is used in high‑stress bolted joints throughout SANY machinery. Typical applications include cylinder head attachment, main bearing caps, connecting rod bolts (on larger engines), axle housing fasteners, and track chain links on excavators. Its flange eliminates the need for separate washers.

On SRT dump trucks, 160101090035B172 secures the suspension mounting brackets and steering knuckles. In SY excavators, these bolts attach the boom foot and hydraulic cylinder pins. The serrated flange prevents loosening even under extreme shock loads from rock impacts or hard digging.

For engine rebuilds, always replace connecting rod and cylinder head bolts with genuine 160101090035B172 fasteners. These bolts are designed for torque‑to‑yield or angle‑tightening procedures. Reusing old bolts can lead to premature fatigue failure. Consult the SANY workshop manual for specific torque values and tightening sequences.

Machine Compatibility & Part Interchange

The flange bolt 160101090035B172 is used across multiple SANY models: SRT45 to SRT115 dump trucks, SY215 to SY500 excavators, SW305 to SW465 wheel loaders, SMG200/220 graders, and STC crawler cranes. It also appears on SANY concrete pump trucks and heavy forklifts.

Common thread sizes for 160101090035B172 include M10x1.5, M12x1.75, and M14x2.0, with lengths from 30 mm to 120 mm. The part number as listed represents a specific length and thread configuration. Always verify the required size using the SANY parts catalog or by measuring the existing bolt.

For fleet maintenance, stock genuine 160101090035B172 bolts to ensure consistent torque tension and vibration resistance. Aftermarket flange bolts often use lower grade steel (8.8) or lack proper serrations, leading to loosening and joint failure. Do not substitute with plain hex bolts plus washers – the integrated flange provides superior load distribution.

Technical Specifications – Hexagon Flange Bolt 160101090035B172

Correct Installation of Bolt 160101090035B172

Before installing the 160101090035B172 flange bolt, clean the threaded hole and the flange contact surface. Do not use additional washers – the serrated flange is designed to bear directly on the mating part. Apply a light coat of clean engine oil to the threads (unless specified dry by SANY).

Tighten the bolt using a calibrated torque wrench. Typical torque for M12 x 1.75 grade 10.9 is 110 Nm ± 10%. For torque‑to‑yield applications (e.g., connecting rods), follow the angle tightening procedure: 50 Nm + 90° + 90°. Always use new 160101090035B172 bolts for such applications.

After torquing, mark the bolt head and adjacent surface. Recheck torque after 100 hours of operation, especially on suspension and engine mounts. If any bolt has loosened, replace it – the serrations may have been damaged. Never mix old and new bolts on the same joint.

Store genuine 160101090035B172 bolts in a clean, dry box. The zinc‑flame coating is somewhat soft, so avoid scratching. If the coating is damaged, do not use the bolt – corrosion will rapidly initiate under the head. Always order enough bolts to complete the entire joint set.

Symptoms of Damaged or Incorrect Flange Bolt

A loose 160101090035B172 bolt often reveals itself by a knocking sound in the joint, visible movement between parts, or oil seepage from gasketed joints. On wheel loaders, loose flange bolts on the axle housing cause wheel wobble and uneven tire wear. Immediate re‑torquing is required, but if the bolt has turned more than 10°, replace it.

Over‑torqued or stretched bolts (beyond yield) will show necking of the shank or thread deformation. A bolt that has been over‑tightened may suddenly snap under normal load. Symptoms include a “pop” sound during assembly, or a torque wrench that never reaches the final angle (spinning). Replace any suspect bolt.

Corrosion on the flange or shank of 160101090035B172 indicates coating failure. Red rust around the bolt head or along the thread compromises the clamping force. Replace all corroded bolts on that joint. For heavy corrosion, also inspect the tapped hole in the casting for thread damage.

Quality Assurance & Full Traceability for 160101090035B172

Every Hexagon Flange Bolt 160101090035B172 is produced in an IATF 16949 certified fastener plant. The process includes wire rod analysis, cold heading, thread rolling, heat treatment (quench and temper), and coating. In‑process checks include hardness, case depth, and decarburization depth.

Final 100% inspection includes automatic optical sorting for head height, flange diameter, and thread presence. A sample from each batch (5000 pcs) is proof load tested to 94 kN (M12 size) with no permanent set. Coating thickness and friction coefficient are verified using a friction tester. A batch code on the head links to material cert, heat treat graph, and coating lot.

For bulk orders, SANY provides a Certificate of Conformance (CoC) stating that all 160101090035B172 bolts meet ISO 898-1 property class 10.9, flange geometry per DIN 6921, and coating salt spray requirements. Independent audits ensure compliance with ISO 9001:2015 and IATF 16949. Trust only genuine SANY fasteners for safety‑critical joints.

Field Performance of Genuine SANY Flange Bolt

Field reports from SANY equipment operating in Canadian oil sands and Indonesian coal mines show that genuine 160101090035B172 bolts maintain clamp load for over 10,000 hours without loosening. The serrated flange outperforms standard hex head bolts with separate washers, reducing re‑torquing intervals by 70%.

Aftermarket flange bolts often fail due to insufficient serration depth, lower grade steel (8.8), or poor coating. These inferior bolts can loosen within 500 hours, leading to joint fretting and component damage. Genuine 160101090035B172 bolts also exhibit superior fatigue strength, with no reported shank fractures in normal service.

To maximize service life, always replace bolts that have been torqued beyond yield (e.g., connecting rod bolts) with new genuine 160101090035B172. For static joints, inspect bolts for corrosion at every major service (2000 hours) and replace if any rust is visible. Following these practices ensures safe, reliable machinery operation.