M10x1.5, 130mm, RH, zinc-plated steel cup head square neck bolt DIN 603 / ISO 8677

A steel bolt with a flat head. Officially, there also seems to be a cup head square neck bolt, but these are referred to as one of the following:

• Coach bolt
• Round head square neck bolt
• Mushroom head bolt
• Carriage screw
• Carriage bolt
• Smooth head bolt
• Lock bolt
• Lock screw

Technical details:

• Thread:
  • M10x1.5 partially threaded (35mm of thread)
• Length:
  • 130mm
• Suitable spanner:
  • None, but the square part under the head is 10x10x5mm
• Tensile strength class:
  • Not specified, but we suspect these to be quite soft such as 4.6 or 5.8
• Material:
  • Zinc-plated steel
• Thread direction:
  • Right-handed (RH, clockwise) thread
• Confirms to the following standards:
  • DIN 603
  • ISO 8677

Depending on the unit these have some signs of use