China ZhongSiDe Fasteners Co., Ltd. —— is a professional manufacturer in China specializing in the R&D and production of standard and custom fasteners.
With complete in-house manufacturing and strict quality control, we provide reliable, cost-effective OEM solutions for the mechanical, automotive, and energy industries worldwide.
All materials and models can be produced according to requirements.
Our screws can withstand rigorous tests, including tensile strength testing, hardness testing, salt spray testing, torque testing, etc.
Our company strictly adheres to authoritative quality standards such as ISO, GB, EN, ASME, etc.
We provide professional fastening solutions for a wide range of industrial applications.
Robots, packaging machines, refrigerators, air conditioner, computers, mobile phones, etc. Core products: precision micro screws, hexagon socket head cap screws, combination screws, rivet nuts, etc.
Photovoltaic solar energy, wind power, infrastructure equipment, etc. Core products: large diameter high-strength bolts, hot-dip galvanized hexagonal bolts, anchor bolts, anti loosening nuts, etc.
Automotive parts, excavators, cranes. Engineering machinery, agricultural machinery, special vehicles, etc.Core products: non-standard flange bolts, fine thread bolts, high-precision step screws, wheel hub bolts, etc.
Complex shaped parts, special material applications, multi process combinations, reverse engineering and sampling. Core services: OEM/ODM/OBM production, small batch testing, emergency order response.
ZhongSiDe Fasteners Co., Ltd.——located in Suzhou, Jiangsu Province, China, adjacent to Shanghai. Our in-house production processes cover cold heading, CNC machining, hot forging and heat treatment, enabling us to produce both standard fasteners and complex non-standard fasteners with stable quality and fast lead time.
Our company's current factory covers an area of 24,000 square meters and has produced more than 20,000 styles of precision screw products. Our factory has more than 60 screw making machines and 10 multi-station machines, with an annual output of more than 5,000 tons of screws and an annual output value of more than RMB 140 million.
We can meet your needs for any material and model, standard parts, and non-standard customized fasteners. From small precision screws to large heavy-duty bolts, we provide you with flexible procurement solutions and professional technical support. Including bolts, nuts, screws, studs, washers, self tapping screws, wood screws, rivets, dowels, retaining rings, components, etc.

Salt spray machine

Projector

Rallying machine

spectrometer

Rockwell hardness tester