Hex Bolt Black Oxide Grade 8.8 M16-2.0 (DIN931)

Specification Details: M16-2.0 Grade 8.8 Black Oxide Hex Bolt

1. Thread Specification

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

2. Dimension Specification (Reference: DIN 931)

• Head Height (k): 10.0 mm
  
• Wrench Size / Across Flats (s): 24 mm (Used for both bolt head and hex nut)
  
• Bolt Type: Hexagon Head Partial Thread (DIN 931 Standard)
  
• Thread Length (b): Based on the DIN 931 standard:
  
  - For bolt length up to 125 mm: Thread Length = 38 mm
  - For bolt length 126 - 200 mm: Thread Length = 44 mm
  - For bolt length over 200 mm: Thread Length = 57 mm

3. Mechanical Specification

• Property Class: Grade 8.8 (Medium Carbon Steel, Quenched and Tempered)
  
• Tensile Strength: 800 N/mm² (800 MPa)
  
• Yield Strength: 640 N/mm² (640 MPa)
  
• Surface Finish: Black Oxide Finish with a light anti-rust oil coating.

4. Suitable Applications

• Construction and Infrastructure: Used for fastening bridge structures, large building frameworks, steel roof trusses, and heavy structural steel columns.
  
• Heavy Machinery and Industrial Equipment: Ideal for large machine beds, industrial cranes, hydraulic presses, and equipment subjected to extreme vibration and high tensile loads.
  
• Commercial Vehicles and Agricultural Machinery: Suitable for truck chassis, tractors, excavators, and heavy-duty vehicles operating in high-impact environments.