Extra High-Tensile Bolt with Nut M16x1.5 - Part Number: 18030-1640

The Bolt with Nut Fastening Set (part number 18030-1640, property class 12.9, metric fine pitch M16 × 1.5, total underhead length L = 40 mm, thread length G = 20 mm, unthreaded shoulder 20 mm, standard requirement 1 bolt per blade) is an ultra-high tensile structural fastener assembly engineered for soil engaging machinery. Built to withstand extreme shear forces, high tensile stress, and persistent rotation vibration across rotary tillers, flail mowers, and cultivators.

Key Features & Benefits

• Maximum Strength Class 12.9: Quenched and tempered from high-grade alloy steel, delivering a nominal tensile strength of 1200 N/mm² and yield point of 1080 N/mm² to prevent bolt elongation, permanent bending, and brittle fractures during rocky soil impact.
• Metric Fine Thread Pitch (M16 × 1.5): The 1.5 mm fine pitch offers superior anti-loosening resistance under heavy vibration compared to standard coarse threads, allowing accurate preload control and consistent clamping tension.
• Precision 20 mm Solid Shoulder: Ensures that the critical shear zone between the blade shank and mounting flange seats entirely on the unthreaded solid body, protecting the thread profile from shear notch effects and eliminating hole elongation.
• Optimized Single-Bolt Configuration: Supplied as a complete bolt and nut kit designed specifically for implements and tines utilizing a single high-strength mounting bolt.

Technical Specifications

Typical Application Scopes

Installation Technical Note: As a grade 12.9 fine-thread structural fastener, tighten using a calibrated torque wrench (recommended dry tightening torque: approximately 300 – 330 Nm, unless specified otherwise by the machinery manufacturer). Retighten hardware after the initial hour of field operation.