Extra High-Tensile Bolt with Nut M14x1.5 - Part Number: 180301435

The Bolt with Nut Fastening Set (part number 180301435, property class 12.9, metric fine pitch M14 × 1.5, total underhead length L = 35 mm, thread length G = 18 mm, unthreaded shoulder 17 mm, standard consumption 2 bolts per blade) is an ultra-high tensile structural fastener assembly engineered for soil engaging machinery. Built to endure severe shear loads, high tensile stresses, and continuous rotational vibration across compact and medium rotary tillers, walk-behind cultivators, and light harrows.

Key Features & Benefits

• Maximum Property Class 12.9: Quenched and tempered from high-performance alloy steel, delivering a nominal ultimate tensile strength of 1200 N/mm² and yield point of 1080 N/mm² to prevent bolt elongation, shear deformation, and brittle fractures during rocky soil impact.
• Metric Fine Thread Pitch (M14 × 1.5): The fine 1.5 mm pitch provides superior self-locking resistance against rotational vibrations compared to coarse threads, ensuring consistent preload retention and clamping force.
• Precision 17 mm Unthreaded Shoulder: Keeps the critical shear boundary between the blade and mounting flange completely on the solid, unthreaded shank, eliminating notch stress concentrations on the thread and preventing mounting hole elongation.
• Complete Kit with Matched High-Strength Nut: Includes a dedicated structural nut suited for property class 12.9 torque specifications, optimized for standard dual-bolt tine installations (typically 2 sets per blade) with compact flange thickness.

Technical Specifications

Typical Application Scopes

Installation Technical Note: As a property class 12.9 structural fastener with M14x1.5 fine pitch, tighten using a calibrated torque wrench (recommended dry torque: approximately 200 – 220 Nm, unless otherwise indicated by the implement OEM). Check hardware torque after the initial hour of field operation.