Philippines

Hexagonal Nut

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Available Sizes:

  • BI 2H Nut 1/2" / 13TPI (Heavy Hex Nut)
  • BI 2H Nut 5/8" / 11TPI (Heavy Hex Nut)
  • BI 2H Nut 3/4" / 10TPI (Heavy Hex Nut)
  • BI 2H Nut 20mm / 2.5P (Heavy Hex Nut)
  • BI 2H Nut 1" / 8TPI (Heavy Hex Nut)
  • BI 2H Nut 1-1/8" / 7TPI (Heavy Hex Nut)
  • BI 2H Nut 1-1/4" / 7TPI (Heavy Hex Nut)
  • BI 2H Nut 30mm / 3.5P (Heavy Hex Nut)

A Black Iron Hexagonal Nut is a type of fastener that is made of low carbon steel and has a black oxide coating on its surface. The black oxide coating provides a layer of protection against rust and corrosion, making it ideal for outdoor applications. The hexagonal shape of the nut allows for easy tightening and loosening using a wrench or pliers, which makes it easy to install and remove.A black iron hexagonal nut is a type of fastener that is made of low carbon steel and has a black oxide coating on its surface. The black oxide coating provides a layer of protection against rust and corrosion, making it ideal for outdoor applications. The hexagonal shape of the nut allows for easy tightening and loosening using a wrench or pliers, which makes it easy to install and remove.


Black iron hexagonal nuts come in a variety of sizes and thread pitches to fit different types of bolts or threaded rods. The width across flats (WAF) of the nut is the distance between opposite sides of the hexagon, measured across the flats, and is specified in millimeters or inches.


These nuts are commonly used in construction, automotive, and industrial applications where strength and durability are important. They are particularly useful for outdoor applications where exposure to moisture and harsh environmental conditions can cause other types of fasteners to corrode. They are also commonly used in combination with galvanized steel or black iron bolts to form a strong and durable fastening system.


Black iron hexagonal nuts are fasteners that are made of low carbon steel and are coated with black oxide. The black oxide coating provides corrosion resistance, durability, and a matte finish that is resistant to scratches and wear. The hexagonal shape of the nut allows for easy installation and removal using a wrench or pliers, and the six-sided design ensures a secure grip that prevents slipping or turning during use.

In summary, the properties of black iron hexagonal nuts are:

  • Corrosion resistance
  • Durability
  • Resistance to scratches and wear
  • Matte finish
  • Easy installation and removal with a wrench or pliers
  • Secure grip to prevent slipping or turning during use

These properties make black iron hexagonal nuts suitable for various industrial and construction applications, particularly for outdoor use or applications where vibration is a concern.


Black iron hexagonal nuts are used in various industrial and construction applications where a strong and durable fastening solution is required. Some common uses of black iron hexagonal nuts include:

  1. Machinery and equipment: These nuts are often used to fasten bolts and screws in machinery and equipment, where vibration and other stresses can cause other types of fasteners to loosen or fail.

  2. Automotive and transportation: Black iron hexagonal nuts are used in the automotive industry to fasten bolts and screws in vehicles, including cars, trucks, and heavy equipment.

  3. Construction: They are used in the construction industry to fasten beams, posts, and other structural elements, where a strong and secure connection is required.

  4. Outdoor applications: Due to their corrosion-resistant properties, black iron hexagonal nuts are ideal for outdoor applications, such as fencing, signage, and other structures.

Overall, black iron hexagonal nuts are a versatile and reliable fastening solution that can be used in a wide range of applications, particularly in situations where corrosion and vibration are concerns.

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