High-Tensile Steel Hex Bolt Grade 12.9, Size M16 Pitch 2.0, Full Thread with Class 10 Nut, Pack 1 Set(copy)

Detailed Specifications: Class 12.9 Black Oxide Hex Bolt with Class 10 Nut Set (Size M16-2.0)

1. Thread Specification

• Thread Diameter: M16 (16 mm shank diameter)
• Thread Pitch: 2.0 mm (Standard / Metric Coarse Thread)
• Thread Direction: Right-Hand Thread

2. Dimension Specification (Reference: DIN 933 / DIN 934)

• Bolt Head Height (k): 10 mm
  
• Nut Height (m): 13 mm
  
• Wrench Size / Width Across Flats (s): Size 24 mm (compatible with both the bolt head and hex nut)
  
• Head Style: Hexagon Head (available in various lengths depending on application)
  

3. Mechanical Specification

• Bolt Property Class: Grade 12.9 – The highest strength class for standard metric fasteners.
• Manufactured from quenched and tempered alloy steel.
  
• Tensile Strength: 1,200 N/mm² (1,200 MPa)
  
• Yield Strength: 1,080 N/mm² (1,080 MPa)
  
• Nut Property Class: Class 10 – Specially designed for high proof-load and high-torque applications paired with Class 10.9 and 12.9 bolts, preventing thread stripping under extreme tightening torque.
  
• Surface Finish: Black Oxide Finish with a light anti-rust oil coating for basic corrosion protection during storage and indoor use.
  

4. Suitable Applications

• Heavy Machinery: Ideal for industrial manufacturing equipment and metal pressing machines subjected to repetitive impact loads.
  
• Automotive & Suspension Systems: Commonly used in high-safety critical mounting points, such as heavy-duty truck suspensions, engine mounts, axle systems, and power transmission assemblies.
  
• High-Tensile Steel Structures: Suitable for building steel structures, bridge assemblies, and machinery foundations subjected to continuous high vibration.
  
• Hydraulic Systems & Mold/Die Assembly: Used for securing high-pressure hydraulic cylinders and assembling plastic/metal injection die and mold sets under extreme clamping loads.