Product Details
These premium screws are defined by their specialized design, superior material composition, and inherent durability.
- DIN 7984 Low-Profile Head: The defining feature is the “low head” or “thin head,” which is substantially shorter than a standard DIN 912 socket cap screw. This design allows for installation in shallow counterbores and tight spaces, enabling a sleek, near-flush surface that avoids interference with other components.
- Internal Hex Socket (Allen) Drive: The head contains an internal hexagonal recess for high-torque tightening with a hex key (Allen wrench). This protected drive ensures secure engagement and is ideal for applications where a clean, smooth external surface is desired.
- Superior Stainless Steel Construction: The key advantage of these screws is their material. We offer them in several grades to meet specific environmental demands:
- A2 Stainless Steel (Type 304): The most common grade, offering excellent corrosion resistance in freshwater and normal atmospheric conditions. It is ideal for general-purpose, food-grade, and architectural applications.
- A4 Stainless Steel (Type 316): Known as “marine grade,” A4 contains molybdenum for superior resistance to chlorides (saltwater), acids, and other harsh chemicals. It is essential for marine, coastal, and chemical plant applications.
- SS316L Stainless Steel: A low-carbon version of 316, offering enhanced resistance to corrosion after welding, making it perfect for fabricated parts in corrosive environments.
- SS201 Stainless Steel: A cost-effective alternative for use in dry, indoor environments where high corrosion resistance is not the primary concern.
- Plain Finish: These screws feature the natural, bright finish of stainless steel. They are inherently corrosion-resistant and require no additional plating, ensuring a durable, clean surface that will not chip, flake, or rust.
Product Parameters
The technical specifications for our Stainless Steel DIN 7984 Low-Profile Hex Socket Cap Screws are detailed below.
| Parameter | Specification |
|---|
| Product Name | DIN 7984 Stainless Steel Low-Profile Hex Socket Cap Screw |
| Standard | DIN 7984 |
| Material | Stainless Steel (SS201, SS304/A2, SS316/A4, SS316L) |
| Property Class / Grade | A2-70, A4-70, A4-80 |
| Surface Treatment | Plain (Bright Finish) |
| Head Style | Low-Profile Cylindrical Head |
| Drive Style | Internal Hex Socket (Allen) |
| Diameter Range | M4 – M24 |
| Measurement System | Metric |
| Brand Name | Duojia |
| Place of Origin | Hebei, China |
| Key Feature | Space-saving design with superior corrosion resistance |
| Application | Marine, Medical, Electronics, Food Industry, Chemical Plants |
Product Features
These high-performance screws are engineered to deliver exceptional reliability and a professional finish:
- Ultimate Corrosion Resistance: Available in A2 and A4 “marine grade” stainless steel, providing long-lasting, maintenance-free performance in wet, saline, and chemically aggressive environments.
- Space-Saving Low-Profile Design: The reduced head height is perfect for compact assemblies, shallow counterbores, and applications requiring a flush, snag-free surface.
- Hygienic and Non-Reactive Surface: The inert nature of stainless steel makes it ideal for medical devices, laboratory equipment, and food processing machinery where cleanliness is paramount.
- Secure Internal Hex Drive: Allows for high-torque installation while maintaining a clean aesthetic and protecting the drive recess from external damage.
- Aesthetic and Professional Finish: The bright, clean look of stainless steel provides a modern, high-end appearance suitable for architectural and consumer-facing products.
- DIN 7984 Standard Compliance: Manufactured to precise international standards to guarantee dimensional accuracy, consistent quality, and full interchangeability.
Product Applications
The unique combination of a low-profile design and superior corrosion resistance makes these screws essential for a wide range of critical applications:
- Marine and Coastal Environments: Essential for fastening components on boats, docks, and coastal structures where resistance to saltwater is critical (A4 grade recommended).
- Food Processing and Pharmaceutical Equipment: The hygienic, easy-to-clean surface is perfect for assembling machinery used in food, beverage, and pharmaceutical production.
- Medical Devices and Laboratory Equipment: Used extensively in the assembly of surgical instruments, diagnostic machines, and lab equipment due to its non-reactive and sterilizable properties.
- Electronics and Compact Assemblies: Ideal for securing components and enclosures in laptops, servers, and other high-density electronic devices.
- Chemical Processing Plants: The excellent chemical resistance of A4/316L stainless steel makes it suitable for securing pipes, valves, and equipment exposed to corrosive substances.
- Architectural and Decorative Applications: The sleek design and clean finish are highly valued for visible fastening in balustrades, signage, and high-end furniture.
