In the industrial fastener market, the demand for high-quality, customized components continues to grow. Handan Guangxuan Fasteners Manufacturing Co., Ltd., located in the renowned standard parts industrial base of Yongnian, Hebei Province, has established itself as a leading provider of specialized fastener solutions. With over a decade of experience in custom fastener processing, the company offers comprehensive services for 8.8 grade carbon steel hex nuts and other industrial fasteners, meeting the stringent requirements of various industrial applications.

Company Advantages in Custom Fastener Processing
Guangxuan Fasteners occupies a strategic location with excellent transportation infrastructure, including the Beijing-Guangzhou Railway, National Highway 107, Beijing-Hong Kong-Macau Expressway, and Qingdao-Hong Kong Expressway. This advantageous position enables efficient nationwide logistics and timely delivery of products to customers across China. The company’s early establishment and substantial production capacity have made it a prominent entity in the local fastener manufacturing industry.
The manufacturing facility is equipped with complete production and processing equipment, supporting the entire workflow from raw material processing to finished product assembly. A standardized quality management system is implemented throughout the production process, with multiple quality inspection checkpoints ensuring that every component meets industry standards and customer specifications. This rigorous quality control approach has earned the company widespread recognition in the market.
Core Product Range and Customization Capabilities
Specializing in custom fastener processing, Guangxuan Fasteners offers a comprehensive product range including tower crane bolts, hinge hole bolts, trapezoidal screw rods, high-strength bolts, double-headed bolts, and various custom-designed components. The company’s expertise in 8.8 grade carbon steel hex nut processing is particularly noteworthy, with capabilities to manufacture these components according to precise customer requirements.
The 8.8 grade carbon steel hex nuts produced by Guangxuan Fasteners are engineered to provide reliable performance in demanding industrial applications. These components feature:
- High tensile strength meeting 8.8 grade specifications
- Precise dimensional accuracy for perfect fit
- Excellent corrosion resistance through appropriate surface treatments
- Consistent quality through standardized production processes
- Customizable features including thread specifications, finishes, and packaging

Technical Specifications for 8.8 Grade Hex Nuts
Understanding the technical requirements is crucial for selecting the right fasteners. The following table outlines key specifications for 8.8 grade carbon steel hex nuts:
| Specification | Details |
|---|---|
| Material Grade | Medium carbon steel, quenched and tempered |
| Tensile Strength | 800-1000 MPa |
| Yield Strength | ≥640 MPa |
| Hardness | 240-300 HB |
| Recommended Application | Structural connections requiring medium to high strength |
Quality Assurance and Production Process
Guangxuan Fasteners implements a comprehensive quality management system that covers every stage of production. The process begins with rigorous inspection of incoming raw materials to ensure they meet the required chemical composition and mechanical properties. During processing, each operation follows standardized procedures with regular quality checks.
The production flow for 8.8 grade hex nuts typically includes:
- Wire rod selection and inspection
- Cold heading to form the nut blank
- Thread rolling for precise thread formation
- Heat treatment to achieve required mechanical properties
- Surface treatment (plating, blackening, etc.) for corrosion protection
- Final inspection and packaging
Each batch of products undergoes dimensional inspection, mechanical property testing, and surface quality evaluation before release. This meticulous approach ensures that every nut delivered to customers meets the highest quality standards.
Custom Processing Services and Flexibility
One of Guangxuan Fasteners’ core strengths is its ability to provide customized solutions. The company welcomes customer drawings and samples for special fastener production, with engineering teams available to assist in design optimization and material selection. This capability enables customers to obtain components that perfectly match their specific requirements, even for unique or non-standard applications.
The custom processing services include:
- Material selection guidance based on application requirements
- Dimension and tolerance customization
- Special thread forms and pitches
- Custom surface treatments and finishes
- Special packaging requirements
- Small batch production for prototyping
FAQ
What makes 8.8 grade carbon steel hex nuts suitable for industrial applications?
8.8 grade carbon steel hex nuts offer an excellent balance of strength and cost-effectiveness. The medium carbon steel composition, combined with quenching and tempering heat treatment, provides tensile strength in the 800-1000 MPa range, making these nuts suitable for medium to heavy-duty structural connections where reliable performance is required.
How does Guangxuan ensure the quality of custom processed nuts?
Quality assurance is implemented throughout the production process through multiple inspection checkpoints. The company follows ISO 9001 quality management standards and performs incoming material inspection, in-process quality control, and final product testing. Each batch includes material certificates and test reports to verify compliance with specifications.
What is the minimum order quantity for custom nut processing?
Guangxuan Fasteners accommodates both small and large batch orders. For custom designs, the minimum order quantity typically starts at 500 pieces, though this may vary depending on the complexity of the design. The company also offers prototyping services for initial sample production.
How long does it take to produce custom 8.8 grade hex nuts?
Production lead times depend on order quantity and complexity. For standard sizes, delivery can be completed within 7-15 days. Custom designs may require 15-30 days, including tooling preparation and sample approval. The company maintains sufficient raw material inventory to shorten production cycles.
What surface treatment options are available for these nuts?
Standard surface treatments include zinc plating (clear, blue, or yellow), black oxide coating, and dacromet coating for enhanced corrosion resistance. Custom surface treatments can be arranged based on specific application requirements and environmental conditions.
Summary
Handan Guangxuan Fasteners Manufacturing Co., Ltd. stands as a reliable partner for businesses seeking high-quality 8.8 grade carbon steel hex nut processing services. With its strategic location, complete production facilities, and strict quality control system, the company delivers customized fastener solutions that meet diverse industrial requirements. The combination of technical expertise, production flexibility, and competitive pricing makes Guangxuan Fasteners an excellent choice for both standard and custom fastener needs. Customers benefit from the company’s commitment to quality, timely delivery, and comprehensive after-sales support, ensuring successful project implementation and long-term operational reliability.