High-precision customized fasteners including knurled inserts, knurled step nuts, flange serrated nuts, square nuts and hex flange nuts, featuring excellent anti-loosening performance, corrosion resistance and wide applicability, widely used in various industrial fields.
Zhejiang TNHO fasteners specializes in providing high-quality multi-type fasteners, including knurled inserts, knurled step nuts, flange serrated nuts, square nuts and hex flange nuts. All these fasteners are precision-manufactured with rational structural designs, featuring excellent anti-loosening, corrosion resistance and torque transmission performance. They are widely applicable to various industrial fields, meeting the diverse fastening needs of different industries with stable performance and reliable quality.
| System of Measurement | Inch, Metric |
| Material | Stainless Steel, Carbon Steel, Steel, Brass, Iron, Aluminum |
| Thread Size | Metric: M1-M16; or customized |
| Head Type | Pan Head, Hex Head, Slotted Head, Torx Head, One-Way Head, Step Head, Flat Head, Large Head |
| Surface Finishing | Zinc Plating, Nickel Plating, Black Oxide, Dacromet |
| Production Process: | Cold Heading, Cold Forging,Cold Forming |
| Standard | ISO, JIS, GB, ANSI, BSW, DIN, Non-standard customized |
| Grade | 4.8, 6.8, 8.8, 12.9, etc |
| Brand | TNHO |
| Application | Electric Meter, Electrical, Electronic, Auto Parts, Renewable Energy Industry, etc. |
1.Precision Manufacturing: Adopting advanced cold heading, cold forging and cold forming processes, ensuring high dimensional accuracy and consistent product quality, with smooth surface and stable performance.
2.Diverse Adaptability: Available in multiple materials, surface finishes and thread sizes, customizable to meet the specific requirements of different industries and applications.
3.Superior Performance: Knurled series products have excellent grip and anti-loosening ability; flange series products distribute clamping force evenly to protect workpieces; square nuts offer strong torque transmission and anti-slip performance.
4.Corrosion Resistance: Multiple surface treatment options (zinc plating, nickel plating, etc.) effectively prevent rust and corrosion, extending the service life of products in harsh environments.
5.Easy Installation: Reasonable structural design, compatible with standard tools, facilitating quick and convenient installation and disassembly, improving work efficiency.
Professional Strength
Zhejiang Tianhong Fasteners Co., Ltd. is a professional fastener manufacturer with years of experience in R&D, production and sales, focusing on providing high-quality fastening solutions.
Advanced Equipment
Equipped with advanced production equipment and testing instruments, strictly controlling each production link from raw material selection to finished product delivery, ensuring product qualification rate.
Customization Capacity
With a professional R&D and technical team, capable of providing non-standard customized services according to customers’ drawings, samples and specific requirements.
Reliable Quality Assurance
Adhering to international standards and strict quality control system, all products have passed strict testing before leaving the factory, ensuring stable and reliable quality.
Perfect Service System
Providing comprehensive pre-sales consultation, in-sales technical guidance and after-sales service, timely solving customers’ problems and winning wide recognition from customers at home and abroad.


