S-SEN manufactures countersunk head screws that meet international standards. Our products are manufactured by Cangzhou Shengsen Hardware Products Co., Ltd. and feature a 90-degree tapered head design to ensure the bolt head is flush with the workpiece surface after installation.
The S-SEN Countersunk Head Screw, also known as a countersunk machine screw, is a key component for achieving a smooth, flush connection. Unlike ordinary screws with protruding surfaces, its 90-degree conical head fully embeds into the pre-machined countersunk hole of the workpiece, eliminating surface protrusions.
Concealed Fastening: S-SEN countersunk screws ensure a smooth and aesthetically pleasing surface after fastening, reducing the risk of scratches during machine operation.
Versatile Drive Routers: Supports slotted, Phillips, and hex socket screws, accommodating various installation tools.
In the production of S-SEN Countersunk Head Screws, we ensure the reliability of every screw through standardized processes:
Professional Passivation Treatment: The surface undergoes standardized zinc plating treatment, forming a passivation film that significantly improves the product's oxidation resistance and extends its service life in complex environments.
Anti-slip groove design: Precise groove center positioning and even force distribution effectively prevent slippage and stripping during installation with high-speed pneumatic tools.
High-precision threads: Threads are precision cold-forged, resulting in uniform pitch and no burrs, ensuring smooth operation during repeated tightening and providing durable connection strength.
| Feature | Details & Standards |
| Brand | S-SEN |
| Product Name | Countersunk Head Screw |
| Material | Carbon Steel, Stainless Steel (SUS304/316), Alloy Steel |
| Head Angle | Standard 90-degree Conical Head |
| Surface Treatment | Galvanized Passivation, Zinc Plated, Black Oxide |
| Thread Type | Metric (M2-M24), Imperial (Standard sizes) |
| Drive Type | Phillips, Slotted, Hex Socket, Pozi |
| Hardness Class | 4.8, 8.8, 10.9, 12.9 Grade |
| Standard | DIN965, ISO 7046, ANSI/ASME B18.6.3 |
S-SEN Countersunk Head Screws, with their high flatness, are widely used in scenarios requiring high surface aesthetics and safety:
Furniture Manufacturing: Used for securing hinges and slides, preventing screw heads from obstructing moving parts.
Electronics and Instruments: Ensures a clean appearance and compact internal space in the fastening of precision electronic product casings.
Molds and Machinery: Used for securing mold templates, preventing protruding screws from affecting mold closure.
Greenhouses and Construction: Provides robust support at structural joints when used with S-SEN greenhouse accessories.
Geographical and Scale Advantages
Our factory, Shengsen Hardware Manufacturing Co., Ltd., is located in Nanpi County, the "Hardware Capital of China." Situated in the Bohai Rim Economic Circle, our advantageous geographical location allows us to secure a stable and high-quality steel supply.
We possess a wealth of advanced CNC machine tools and professional testing instruments. This hardware support ensures that the dimensional tolerances of the S-SEN Countersunk Head Screw are consistently controlled within an extremely small range.
Our company maintains a comprehensive and scientific quality management system. Since officially entering the international market in 2017, we have obtained ISO 9001 certification, and our products are exported to North America and Australia.
Packaging Standards: Moisture-proof bags are used for packaging, followed by placement in thickened industrial corrugated cardboard boxes. For large export orders, we use fumigation-free pallets that meet international standards.
Logistics Follow-up: Our team monitors cargo location and predicts arrival times, providing prompt responses to customs inspections.
Technical Support: We provide customers with product installation instructions and online technical guidance to ensure the correct torque is applied during use.
Requirements Analysis: Customers provide the material, strength grade, and dimensional requirements for S-SEN Countersunk Head Screws.
Drawing Confirmation: Our technical team provides technical drawings based on DIN or ISO standards.
Sample Testing: We support small-batch sample testing to ensure hardness and anti-corrosion coating thickness meet requirements.
Mass Production: After sample confirmation, the automated stamping and thread rolling process begins.
Q1: How long does the zinc passivation layer on S-SEN countersunk screws last?
A: It depends on the environment. In indoor environments, our zinc passivation layer provides long-term rust protection; for outdoor high-humidity environments, we recommend stainless steel or hot-dip galvanizing.
Q2: Can you provide a material certificate before bulk ordering?
A: Yes. All our S-SEN Countersunk Head Screws come with an original Material Record (MTR) and certificate of conformity.
Q3: What is your return and exchange policy?
A: If the product size is found to be incorrect or the material does not meet the contract standards, we will provide return and exchange support after confirming the test results.
