Extra High-Tensile Bolt with Nut M16x1.5 - Part Number: 18030-1647

The Bolt with Nut Fastening Set (part number 18030-1647, property class 12.9, metric fine pitch M16 × 1.5, total underhead length L = 47 mm, thread length G = 25 mm, unthreaded shoulder 22 mm) is an ultra-high tensile structural hardware set engineered for agricultural tillage machinery. Designed to endure extreme shear forces, high tensile stress, and intense vibrational shock loads across rotary tiller blades, power harrows, and mulcher rotors.

Key Features & Benefits

• Maximum Property Class 12.9: Forged from high-grade alloy steel and through-hardened to achieve a nominal tensile strength of 1200 N/mm² and yield point of 1080 N/mm², preventing bolt stretching, plastic deformation, or brittle fatigue under stone impact.
• Metric Fine Thread Pitch (M16 × 1.5): The fine 1.5 mm pitch provides superior self-locking performance against persistent rotation vibration compared to standard coarse threads, ensuring consistent preload retention.
• Precision 22 mm Unthreaded Solid Shank: Ensures the shear boundary between the tine shank and rotor flange rests on the solid unthreaded body, preventing localized thread shearing and mounting hole elongation.
• Supplied Complete with Matched Nut: Paired with an extra high-strength matching nut suited for 12.9 torque specifications, optimized for compact flange clamping setups.

Technical Specifications

Typical Application Scopes

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