Square Nuts Supplier Exporter In China
Ningbo Teng Qi Fasteners Co., Ltd is a square nuts supplier in China. Square nuts, also known as square head nuts or four-sided nuts, are a type of nut with a square shape. They have four equal sides and are typically used in conjunction with square bolts or machine screws that have a square-shaped head. The square shape of the nut prevents it from rotating when tightened, making it useful in applications where a secure and stable connection is needed.
Square nuts are often used in woodworking and construction projects where traditional hex nuts might not provide the desired level of stability. They can be tightened using a wrench or pliers on two opposing sides.
Square nuts are available in various materials and sizes to suit different applications and requirements. They can be made from materials like steel, stainless steel, brass, or other alloys, depending on factors such as corrosion resistance and strength.
In addition to their functional purpose, square nuts are sometimes used in decorative applications, adding a unique visual element to projects that require exposed fasteners.
Specification of square nuts:
Specifications of square nuts can vary based on factors such as the size, material, thread pitch, and intended application. Here are some common specifications that are often provided for square nut:
| Product Name | Square nuts |
| Diameter | Metric: M5-M20 Imperial:0#-3/8” |
| Class | 5/8/10/12 A2-70 A2-80 A4-70 A4-80 |
| Grade | SAE J995 GR.2/5/8 |
| Material | Steel/Stainless steel/Brass/Aluminum |
| Manufacturing Process | wire drawing, cold heading/hot forging, thread rolling, heat treatment, surface treatment |
| Surface treatment | Black Oxide Coating/Zinc Plating (Electroplating)/Hot-Dip Galvanizing/Mechanical Galvanizing/Dacromet Coating/Painting or Powder Coating |
| Application Industry | Construction/Agricultural Machinery/Industrial Structures/Equipment and Machinery/Infrastructure/Mechanical and Engineering/Automotive and Transportation |
When selecting square nuts, it’s important to consider these specifications to ensure that you choose the right nut for your intended application. The specifications will help you match the nut’s characteristics with the requirements of your project.
Quality of square nuts:
In a world where connections matter, Ningbo Teng Qi Fasteners is more than just a fasteners supplier and manufacturer. We are architects of stability, builders of relationships, and champions of your success. From skyscrapers that reach for the sky to machines that power industries, our fasteners form the backbone of progress. When you choose Ningbo Teng Qi Fasteners, you choose unwavering quality, exceptional service, and a partner who understands that every bolt holds a piece of your vision.
| Inspect Item | Detail |
|---|---|
| Dimensional Inspection | Critical dimensions such as bolt diameter, head width, head height, bolt length and thread length are checked using calibrated measuring equipment. Inspection is carried out according to the applicable dimensional standard or customer drawings to ensure consistent fit and interchangeability. |
| Thread Inspection | External threads are inspected using calibrated GO and NO-GO thread gauges to verify thread profile, pitch and dimensional conformity. Additional measurements can be performed when tighter thread tolerances or specific customer requirements apply. |
| Mechanical Testing | Mechanical properties are verified according to the specified material and strength grade. Depending on the applicable standard, testing may include tensile strength, yield strength, hardness and other required mechanical tests, with test results documented in the relevant inspection or material reports. |
| Surface & Coating Inspection | Bolt surfaces are inspected for appearance, defects, coating uniformity and other specified requirements. For coated fasteners, coating thickness and adhesion or other applicable coating characteristics can be checked according to the specified surface treatment standard. |
| Final Inspection & Testing | Before shipment, finished hex bolts undergo final inspection to confirm dimensions, thread quality, mechanical requirements, surface condition, marking and packaging. Inspection records and test reports can be provided according to the order specification and customer requirements. |