GB835 carbon steel hand-tightened screws are manufactured in accordance with the national standard GB/T 835. They are made from high-quality carbon steel, with the surface treated by galvanization, providing both basic rust prevention capabilities and economic practicality. The cylindrical flat head surface is precisely embossed, offering excellent anti-slip friction, allowing for quick tightening or loosening with bare hands, enabling tool-free operation. A one-degree angle slot is reserved at the center of the head, and a screwdriver can be used for assistance in tightening when necessary. The flat head design ensures that the installation is flush with the surface, without interfering with adjacent components. This product is suitable for indoor scenarios where frequent manual adjustment is required and budget is sensitive, such as mechanical equipment protective covers, electronic cabinet panels, workholding fixtures, home appliance shells, and furniture assembly. However, it is not recommended for use in high humidity, strong corrosive environments, or main load-bearing structures.
GB835 Knurled Screws are made of carbon steel and are electroplated with blue-white zinc on the surface. The coating is shiny and has basic anti-rust and corrosion resistance capabilities. The product comes with a knurled head, which can be tightened and disassembled directly by hand without the need for tools. The operation is simple and fast, suitable for scenarios requiring frequent disassembly and assembly.
The knurled head increases friction, making it less likely to slip when holding, and the thread accuracy complies with the national standard GB835. The thread fit is stable, and it is not prone to thread breakage after multiple disassemblies. The blue-white zinc coating meets the salt spray requirements for common indoor conditions and has a high cost-performance ratio. It is mainly used in chassis panels, equipment covers, instrument shells, tooling fixtures, signs, etc., and is widely applied in electronic equipment, industrial control cabinets, testing instruments, etc. It is a commonly used fastener for quick and tool-free fastening.
Name
Knurled Screws
Material
Carbon steel
Standards
GB,DIN, BSW, JIS, UNC, UNF, Non-standard, Customized Drawing
Thread
Metric, UNC, UNF, BSW, BSF
Sizes
M1.6-M10
Finish
Blue and white zinc plated
MOQ
Stardard item(Usually little hundred-little thousand)
Price
0.3USD/PCS-25USD/PCS
Product Feature
Toolless hand-tightening operation: The head is designed with ball-pattern grooves, which increase the friction on the hand, eliminating the need for screwdrivers or wrenches. It can be easily disassembled and reassembled by hand, making it suitable for frequently disassembled and maintained parts.
National standard production: Follows the GB835 national standard, with stable thread tolerance and good interchangeability. It is not prone to thread breakage after repeated disassembly.
Blue-white zinc surface treatment: Carbon steel base, electro-galvanized in blue-white, with a uniform and bright coating. It has basic rust prevention capabilities and is suitable for indoor ordinary working conditions, with economic cost.
Large-head limit structure: The head is enlarged, increasing the contact area when pressed, ensuring uniform force after locking and reducing the risk of damaging the workpiece surface.Easy and efficient assembly, no need for auxiliary tools, improving disassembly efficiency, suitable for equipment maintenance and quick panel disassembly.
Our Strength
· Direct from manufacturer to customer, On time delivery
· Completely fastener products,offers one - stop shopping service.
· High quality and competitive price, saving your cost.
· Product complies with iso9001 and ts16949 certification
· After shippment, we will offer the Material report and Test report.
Product Application
It is widely applicable to all connection points that require frequent manual adjustment, tool-free operation and are budget-sensitive:
Mechanical equipment and tooling fixtures: protective covers for equipment, maintenance covers, quick locking and positioning of test fixtures.
Electrical appliances and instruments: control panels, side panels of cabinets, display brackets, cover plates of power boxes for manual tightening and fixation.
Household appliances and furniture: bottom brackets of washing machines, external air conditioners' brackets, temporary or frequently tightened fasteners in furniture assembly.
Automobiles and ships: battery clamps, interior panels, quick disassembly and assembly of non-load-bearing hatches.
DIY and daily maintenance: photography equipment, instrument stands, display stands, door and window limiters for personal manual projects.
Send Inquiry
Please feel free to fill your inquiry in the form below. We will reply you in 24 hours.
Q: Are you trading company or manufacturer ?
A: We are factory
Q: How long is your delivery time?
A: Generally it is 2-5 days if the goods are in stock. or it takes around 20 days if the goods are not in stock, certainly,it is according to your quantity.
Q: Do u do Non-standard Fasteners,and How about the OEM/ODM?
A:Yes,we do Non-standard Fasteners,OEM/ODM as well,and we have 20 years more experience in this line.We have complete production line, R&D Center. Pre-sales and after-sales support. Let u no worries about the quality.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free,but u need charge the freight at the first time.
Q:Do you sell little quantity,like few hundred and few thousand?
A: It depends on the stock. if we have ,that's ok. if not,it needs MOQ.