Hot Sale Custom M4 M5 M6 M8 M10 M20 304 Stainless Steel/Carbon Extend Long Knurled Round Coupling Nut

• Customization: Available
• Material: Stainless Steel
• Type: Hexagon Head
• Model NO.: DIN GB
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI, GB, BSW
• Grade: 8.8
• Finish 1: Mechanical Galvanizing
• Finish 2: Zp
• Finish 3: Nickel Palting
• Transport Package: We Can Follow Customer′s Request
• Specification: we can follow customer′s request
• Trademark: HQ
• Origin: Handan City
• HS Code: 7318160000

Product Description

Product Description

 Product Introduction of Coupling Nut

Coupling nuts are essential components in mechanical systems, designed to connect two shafts together. They are typically used in applications where precise alignment and secure connection are required 
#### 1. Product Overview
The coupling nut is a long hexagonal nut, mainly used for connecting two bolts, screws or threaded rods with the same thread. Its design feature is a longer length and a full-threaded structure inside, which can provide greater connection strength and stability. Coupling nuts are widely used in machinery, construction, piping, electrical and other fields, and are particularly suitable for situations where the threaded rods or bolts need to be extended. 
#### 2. Product Features
- **High-strength Connection**: The length design of the coupling nut provides a larger contact area, enhancing the strength and stability of the connection.
- **Full-thread Structure**: The full-thread design inside ensures a tight fit with bolts or threaded rods, suitable for high-load applications.
- **Easy Installation**: It can be easily installed and removed with a standard wrench, offering convenient operation.
- **Diverse Materials**: Available in carbon steel, stainless steel, alloy steel, etc., to meet the requirements of different environments. 
#### 3. Materials and Specifications
- **Materials**: Common materials include carbon steel (which can be galvanized or blackened on the surface), stainless steel (such as 304, 316), etc., which have excellent corrosion resistance and strength.
- **Specifications**: The size range of coupling nuts is extensive, typically ranging from M4 to M36, and the length can be customized according to requirements. 
#### 4. Application Fields
- **Mechanical Manufacturing**: Used for connecting long threaded rods or bolts, suitable for high-load equipment.
- **Construction Engineering**: Applied in steel structure connections, scaffolding fixation, and other scenarios.
- **Pipeline Systems**: Utilized for connecting pipeline threaded rods to ensure the stability of pipeline systems.
- **Electrical Equipment**: Employed in the installation and fixation of electrical equipment, providing reliable connection support. 
#### 5. Precautions
- **Thread Matching**: Ensure that the coupling nut's thread specification exactly matches that of the bolt or threaded rod to avoid installation difficulties or insecure connections.
- **Installation Torque**: Use the appropriate torque for installation to prevent over-tightening or under-tightening, which could affect the connection performance. 
#### Summary
The coupling nut, with its high strength, full-thread design, and wide range of applications, has become an essential component in industrial connections. Whether in mechanical manufacturing, construction projects, or piping systems, the coupling nut offers reliable connection solutions. For more detailed information or customized services, please refer to the relevant product pages or contact the supplier for support.

 

Product Parameters

 

ITEM NAME:	Hot Sale Custom M4 M5 M6 M8 M10 M20 304 Stainless Steel/Carbon Extend Long Knurled Round Coupling Nut
MATERIAL:	1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420 2.Steel:C45(K1045), C46(K1046),C20 3.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045, C435#, 40CrMo, 42CrMo
STANDARD:	GB / DIN / ASME/ANSI  / BSW
GRADE:	4.8,6.8,8.8,12.9
SIZE:	M3-M24 or made to print as customer's specification
SIZE:	1/8" 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8" 1" 1-1/4" 1-1/2" 1-3/4" 2"
FINISH :	Plain, Zinc Plated(Clear/Blue/Yellow/Black), black oxide, H.D.G, DAC,GOEMET, as custom need

Detailed Photos

 

Company Profile

**Handan Haoqiang Fastener Manufacturing Co., Ltd.**

**Address:** C6-13, Shichuang Logistics Port, Yongnian District, Handan City, Hebei Province, China

Since its inception in 2005, Handan Haoqiang Fastener Manufacturing Co., Ltd. has distinguished itself as a premier manufacturer and exporter, specializing in high-quality fasteners. With over a decade of unrivaled production expertise and a global trade footprint since 2014, we have earned a formidable reputation for delivering impeccable, precision-engineered fastening solutions to clients on a global scale.

**Core Products:**
- An extensive array of nuts and bolts in diverse specifications
- High-strength bolts and nuts designed for demanding applications
- Customized fasteners expertly tailored to meet specific client requirements

**Compliance Standards:**
Our products are meticulously crafted to adhere to esteemed international standards, including:

- **DIN** (German Standard)

- **GB** (Chinese National Standard)

- **ANSI/ASTM** (American Standard)

- **BSW** (British Standard Whitworth)

- **JIS** (Japanese Industrial Standard)

Harnessing state-of-the-art manufacturing technology and rigorous quality control systems, we guarantee durability, superior performance, and compliance with the stringent demands of global industries. Our unwavering commitment to innovation and customer-centric excellence has allowed us to forge enduring partnerships across dynamic sectors such as construction, machinery, automotive, and energy.

At the core of Haoqiang Fastener lies a dedication to integrity, efficiency, and sustainability. Whether catering to domestic projects or navigating international exports, we are driven to surpass expectations with competitive pricing, prompt delivery, and outstanding after-sales support.

*Connect with us today to discuss your fastener needs and discover how our expertise can fortify your projects!*

Exhibition Display

 

Packaging & Shipping

PACKAGE : Secure your goods with our customized packaging options: 25kgs Box with Pallet, 25kgs woven bags, or 25kgs Gunny bags. We also offer packaging tailored to the customer's request, ensuring your products reach their destination safely and efficiently.

FAQ

**Product & Specifications**
Q: What standards do your fasteners comply with?*
A: Our products meet DIN (German), GB (China), ANSI/ASTM (USA), BSW (UK), and JIS (Japan) standards. Custom specifications are available upon request.

**Order & Payment**
*Q: How can I track my international order?*
A: A real-time tracking number will be emailed once your shipment is dispatched. For urgent inquiries, contact export customer service

**Shipping & Logistics**
*Q: What are your delivery options for overseas customers?*
A: We offer sea freight (FOB/CIF), air freight, and express courier (DHL/FedEx) with competitive rates. Delivery timelines vary by destination.

**Returns & Warranty**
*Q: What if I receive defective products?*
A: We provide a 12-month quality guarantee. Report issues within 7 days of receipt with photos/video, and we'll arrange replacements or refunds promptly.

**Technical Support**
*Q: Can you assist with material selection for extreme environments?*

A: Absolutely! Our engineering team offers free consultation on corrosion-resistant, high-temperature, or high-load solutions.