Product Details
The defining characteristic of this screw is its flat head, which has a conical bearing surface designed to fit into a countersunk hole. This allows the screw head to sit flush with or below the surface of the surrounding material, which is critical for applications with moving parts, external panels, or where a smooth finish is desired.
The internal hexagonal socket drive allows for higher torque to be applied during installation compared to conventional slotted or cross-recess drives. This creates a tighter, more secure fastening and reduces the risk of driver slippage (cam-out) that could damage the screw or the workpiece. These screws are available in a wide array of property classes, including high-tensile alloy steel grades like 10.9 and 12.9, which are heat-treated for maximum hardness and strength. The standard black oxide finish provides mild corrosion resistance and a durable, non-reflective black appearance.
Product Parameters
The following table details the extensive technical specifications available for our Hex Socket Flat Head Screws. We are an ISO-certified manufacturer capable of producing to numerous international standards.
General Specifications:
| Parameter | Description |
|---|
| Product Name | Hex Socket Flat Head Screw / Hex Socket Countersunk Screw |
| Brand Name | Duojia |
| Standard | DIN, ANSI, JIS, GB, and other standards upon request. |
| Material Options | Carbon Steel, Alloy Steel, Stainless Steel, Titanium, Aluminum, Brass |
| Finish / Surface Treatment | Black Oxide (Standard), other finishes available. |
| Head Style | Flat (Countersunk) |
| Drive Type | Hex Socket (Allen Drive) |
| Measurement System | Metric, INCH |
| Property Class / Grade | 4.6, 5.8, 8.8, 10.9, 12.9, A2, A4, B7, B7M, L7, L7M, B8, B8M |
| Size Range | All sizes available upon request. |
| Additional Process | Heat treatment for increased hardness and strength. |
| Place of Origin | Hebei, China |
Product Features
Our screws are manufactured to deliver superior performance and versatility, offering several key advantages:
- Flush-Mounting Design: The countersunk head enables the screw to sit perfectly flush with the material surface, providing a clean, professional look and eliminating obstructions.
- High-Torque Installation: The internal hex socket drive allows for high installation torque, ensuring a secure and vibration-resistant connection.
- Exceptional Range of Materials & Strengths: We offer an unparalleled selection of materials and property classes, from standard carbon steel to high-tensile Grade 12.9 alloy steel and corrosion-proof stainless steel or titanium.
- Durable Black Oxide Finish: The standard black oxide coating offers mild corrosion and abrasion resistance while providing a sleek, non-reflective black finish.
- Full Customization: As a factory and trade company, we can manufacture screws to meet custom specifications and various international standards (DIN, ANSI, etc.).
Product Applications
The unique combination of a flush profile and high-strength drive makes these screws essential in many industries:
- Machine Building: For assembling components where moving parts or external panels require a clear, flat surface.
- Tool and Die Making: Used to secure components in jigs, fixtures, and dies where precision and a non-interfering head are critical.
- Automotive and Motorsports: Ideal for fastening interior panels, trim, and various components where a flush fit is necessary.
- Architectural and Metalwork: Used in railings, fixtures, and decorative panels for a clean, high-end aesthetic.
- Electronics Enclosures: Provides strong, secure fastening for panels and components without protruding heads.
- High-End Furniture and Cabinetry: Offers strong, concealed fastening for a modern and minimalist design.
