Extra High-Tensile Bolt with Nut M16x1.5 - Part Number: 18030-1652

The Bolt with Nut Fastening Set (part number 18030-1652, property class 12.9, metric fine pitch M16 × 1.5, total underhead length L = 52 mm, thread length G = 25 mm, unthreaded shoulder 27 mm, standard consumption 2 bolts per blade) is a heavy-duty structural fastener assembly engineered for ground engaging tools. Designed to withstand severe shear loads, high tensile stress, and persistent rotation vibration across rotary tillers and soil preparation machinery.

Key Features & Benefits

• Premium Property Class 12.9: Quenched and tempered from alloy steel to deliver a nominal tensile strength of 1200 N/mm² and yield point of 1080 N/mm², preventing bolt elongation, bending, and shock fractures in rocky soil conditions.
• Metric Fine Thread Pitch (M16 × 1.5): The fine 1.5 mm thread pitch provides superior resistance against vibrational loosening compared to standard coarse threads, allowing accurate preload retention and secure clamp force.
• Precision 27 mm Unthreaded Shank: The unthreaded solid shoulder ensures the primary shear boundary between blade and flange rests on the solid steel shank, eliminating stress risers on the threads and protecting mounting holes from elongation.
• Supplied Complete with Nut: Includes a matched high-strength nut suited for the 12.9 stress rating, ensuring durable, play-free blade attachment (typically installed in pairs of 2 per tine).

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 torque: approximately 300 – 330 Nm, unless specified otherwise by the machinery manufacturer). Retighten hardware after the initial hour of field use.