Stainless steel Button Head Socket Cap Bolts, also known as hex head screws or button head screws, are fasteners with a smooth dome-shaped head and a cylindrical shank that tapers to a point. They are made from stainless steel, which is an alloy of iron, carbon, and chromium. The chromium content in stainless steel gives it corrosion resistance.
1. **Corrosion Resistance**: Stainless steel is highly resistant to rust and corrosion, making it suitable for use in outdoor environments, marine applications, and other settings where exposure to moisture or chemicals could cause rusting.
2. **Strength and Durability**: Stainless steel is strong and durable, providing reliable performance even under high loads or in harsh conditions.
3. **Head Type**: The button head design provides a clean appearance and is often used when a flush or smooth surface is desired. The head sits flat against the surface, eliminating the need for a countersink.
4. **Thread Type**: These bolts typically have a standard metric thread pitch (coarse or fine), depending on the size and application. The threads allow for a secure grip in the material being fastened.
5. **Size and Thread Length**: Available in various sizes and thread lengths, these bolts can be customized to fit different applications and ensure a proper fit in the material being fastened.
6. **Surface Finish**: Stainless steel can have a variety of surface finishes, such as 18-8 (304) or 316 grade, which affects its corrosion resistance and appearance.
7. **Fastening Method**: They are typically installed using a wrench or screwdriver to tighten the bolt into place, with the head sitting flush with or below the surface.
These bolts are commonly used in construction, automotive, aerospace, and general engineering applications where strength, durability, and corrosion resistance are critical. They can be found in hardware stores, online retailers, and specialized fastener suppliers.