Product Specification: Black Hex Bolt & Nut Set Class 10.9 (Size M24-3.0)
1. Thread Specification
Thread Diameter: M24 (24 mm nominal diameter)
Thread Pitch: 3.0 mm (Metric Coarse Thread)
Thread Direction: Right-Hand Thread
2. Dimensions & Standards (DIN 933 / DIN 934)
Bolt Head Height (k): 15 mm
Nut Height (m): 19 mm
Wrench Size / Width Across Flats (s): 36 mm (fits both bolt head and nut)
Bolt Type: Hexagon Head, Fully Threaded (DIN 933)
3. Mechanical & Material Properties
Bolt Property Class: Class 10.9 (Quenched & Tempered Alloy Steel)
Tensile Strength: 1,040 N/mm² (MPa)
Yield Strength: 940 N/mm² (MPa)
Nut Property Class: Class 10 (Designed to match Class 10.9 bolts to ensure high proof load performance and prevent thread stripping)
Surface Finish: Black Oxide finish with a light anti-rust oil coating for indoor storage and rust prevention
4. Suitable Applications
Heavy Steel Structures & Foundations: Ideal for building frameworks, steel bridges, heavy machinery bases, and high-vibration structural joints.
Specialized Heavy Machinery: Suitable for heavy industrial equipment such as hydraulic presses, mining machinery, and heavy construction equipment.
Heavy-Duty Automotive: Perfect for critical safety points including engine mounts, heavy-truck/trailer suspensions, axles, and earthmoving machinery.
Molds & Energy Sector: Used in large injection mold/die assemblies, as well as high-pressure piping systems in power plants and petrochemical facilities.