Coupling Nuts  Manufacturers, Traders, Suppliers

Coupling nuts are fasteners that are used to connect two pieces of threaded rod or two bolts together to extend their length. They are typically cylindrical in shape and have internal threads that match the thread size of the rods or bolts they are connecting. Coupling nuts are often used in construction, machinery, and various applications where a strong connection between threaded components is needed.

Coupling nuts are specialized fasteners used to connect two threaded rods or to join components in a variety of applications. Here are some technical specifications and data related to coupling nuts:
1. **Material**:
- Common materials include carbon steel, stainless steel, and alloy steel.
- Coatings such as zinc plating or black oxide may be applied for corrosion resistance.
2. **Dimensions**:
- Coupling nuts come in various sizes, with common lengths ranging from 1 inch to 4 inches, and diameters typically matching the threads of the rods they will connect.
- The thread size can range from #6 (3.5 mm) to 1 inch (25.4 mm) or larger, depending on the application.
3. **Thread Type**:
- Standard UNC (Unified National Coarse) and UNF (Unified National Fine) threads.
- Metric threads (e.g., M5, M6, M8) are also available for specific applications.
4. **Strength**:
- Load capacity is dependent on the material and thread size, with common grades including ASTM A307 (low-strength) and ASTM A325 (high-strength) for steel coupling nuts.
- For stainless steel, common grades include 304 and 316.
5. **Applications**:
- Used in structural assemblies, furniture, machinery, and general fastening needs.
- Ideal for situations where adjustment and realignment are necessary.
6. **Installation**:
- Coupling nuts can be installed using common tools like wrenches, and they can be paired with lock washers or adhesives for added security.
7. **Standards**:
- Coupling nuts may conform to national and international standards (e.g., ISO, ANSI) for quality assurance.
Make sure to refer to the manufacturer's specifications for exact measurements and load ratings for the specific coupling nuts you plan to use.

Coupling nuts are used in various applications, primarily in construction and manufacturing. Some common uses include:
1. **Threading Extension**: They are used to connect two pieces of threaded rod or bolt, essentially acting as a coupler to extend the length of a threaded fastener.
2. **Adjustable Connections**: Coupling nuts allow for adjustable connections, providing flexibility in joining components that require precise alignment or spacing.
3. **Support Structures**: In construction, they are often used to create support structures, such as in the assembly of frames or fixtures where rods need to be joined securely.
4. **Machinery Assembly**: They are used in machinery and equipment to attach and secure parts that need to be frequently adjusted or replaced.
5. **Electrical Applications**: In electrical applications, coupling nuts can be used for cable management and securing various components together.
Overall, coupling nuts are versatile fasteners that facilitate the easy assembly and disassembly of structures or machinery.

HEICO-TEC® Tensioning Systems

Easy, fast and reliable assembly of large bolted joints

• High preload force due to torsion-free assembly
• Controlled friction characteristics ensure the highest tightening and repeat accuracy
• Losses from settlement of the joint do not occur and full capacity of the joint is achieved
• Tension nuts and reaction nuts are compatible with common strength classes according to ISO 898-2
• Can be re-used several times
• Standard available from M20-M120 strength class 8 and M20-M90 strength class 10
• Other strength classes, bolt sizes, thread types and thread pitches are available on request

HEICO-TEC® Tension Nut
HEICO-TEC® Tension Nut - compact series
HEICO-TEC® Reaction Nut
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DIN934 Hexagon finished nuts