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| Customization: | Available |
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| Material: | Stainless Steel |
| Type: | Round Head |
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| Product | Stainless Steel 304 Flat Head Pressure Riveting Screws M10*19 A2-70 |
| Keyword | Riveting Screws |
| Material | Stainless steel 304/as request & design |
| Size | M10*19 or as request & design |
| Surface | Plain, galvanized, blue white, YZP etc |
| Sample | Free sample can be sent for test |
| Features | Chemical resistance |
| Dimensionally accurate | |
| Corrosion resistance | |
| Wear and tear resistant |
Function:
A Stainless Steel 304 Flat Head Pressure Riveting Screw is a specialized type of fastener designed for a permanent, high-strength, and flush-mount installation into thin sheets of ductile metal, such as aluminum or mild steel. It is not a traditional screw that cuts its own threads. Instead, it is installed into a pre-punched hole and, using high pressure, is permanently "riveted" or pressed into place, forming a strong, integral thread within the host panel. The use of Stainless Steel 304 provides excellent corrosion resistance and good mechanical strength, making it suitable for demanding environments.
The screw's design is highly engineered and consists of several key features:
A. The Head:
Design: As the name states, it features a flat (countersunk) head with a standard drive system (typically a Phillips, Pozidriv, or hex socket). The underside of the head is conical, designed to match a standard 90-degree countersink.
Function: The flat head allows the screw to sit completely flush with or below the surface of the host material once installed. This is critical for aerodynamic surfaces, safety (no protrusions), and aesthetics. The drive system allows for the application of torque after the riveting process is complete.
B.The Knurled Shank / Riveting Section:
Design: This is the most critical part of the fastener. Located directly under the head, this section of the shank features a diamond or straight knurled pattern and may have one or more annular rings or serrations. The diameter of this section is larger than the pre-punched hole it is designed for.
Function: The knurling acts as a locking mechanism. During installation, high pressure forces this oversized, knurled section into the pre-punched hole. The hard, sharp knurls displace and cold-flow the surrounding ductile host material, filling the grooves of the knurl. This creates a permanent, vibration-proof lock that prevents the screw from rotating or pulling out. The serrations increase tensile strength and resistance to push-out forces.
C.The Threaded Section:
Design: Below the knurled section, the screw has a standard machine screw thread (e.g., M3, M4, #4-40, etc.). The threads are precisely formed and run to a point or a short chamfer at the tip.
Function: This section provides the standard threaded engagement for a nut or a tapped hole in a mating component. It is not designed to cut threads into the host panel it is riveted into.
The Material:
Composition: Made from Stainless Steel 304. This austenitic grade, containing 18% chromium and 8% nickel, offers a excellent balance of strength, formability, and most importantly, superior corrosion resistance compared to carbon steel fasteners.
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