Philippines

Ordinary Square Nut

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An Ordinary Square Nut is a type of fastener that has a square shape with four flat sides and four sharp corners. It is commonly used in construction, manufacturing, and maintenance applications to secure two or more objects together. Unlike locking nuts or other specialized nuts, ordinary square nuts do not have any special locking mechanism to prevent them from loosening under vibration or other forces. As a result, they are typically used in non-critical applications where the risk of loosening is low.

One advantage of ordinary square nuts is their simplicity and economy compared to other types of nuts. They are typically made of low-grade steel, which is less expensive than the high-grade steel used for locking nuts. Plain nuts are the most economical option and have no coating. Zinc-plated nuts have a thin layer of zinc coating that provides some protection against corrosion. Galvanized nuts are coated with a thicker layer of zinc, making them more resistant to corrosion than plain or zinc-plated nuts.

However, the lack of a locking mechanism can make ordinary square nuts less secure than other types of nuts. When used with a lock washer or other locking device, an ordinary square nut can provide a secure and reliable fastening solution. Lock washers are designed to prevent the nut from rotating or loosening by exerting pressure against the mating surface.

In summary, ordinary square nuts are a widely used and versatile type of fastener that are relatively simple and economical compared to other types of nuts. While they may not offer the same level of security as locking nuts, they can still provide a reliable fastening solution in non-critical applications when used with the appropriate locking mechanism.


Ordinary square nuts are used in a wide range of applications across different industries, such as construction, automotive, manufacturing, and maintenance. They are typically used with bolts or threaded rods to secure two or more objects together.

Some common uses of ordinary square nuts include:

  1. Structural applications: Ordinary square nuts are used in structural applications such as bridges, buildings, and towers to secure bolts and threaded rods.

  2. Electrical applications: Square nuts are used to secure electrical components such as conduit fittings, junction boxes, and fixtures.

  3. Automotive applications: Square nuts are used in automotive applications to secure components such as engines, transmissions, and suspension systems.

  4. Machinery and equipment: Square nuts are used in machinery and equipment such as conveyor systems, agricultural equipment, and industrial machinery.

  5. Furniture and cabinetry: Square nuts are used in furniture and cabinetry applications such as assembly of bed frames, chairs, and cabinets.

Overall, ordinary square nuts are a versatile and widely used type of fastener that can be used in a range of applications where a locking mechanism is not necessary.

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