M10 M7 304 SS A2-70 SUS304 METAL BOLT Carriage Bolt Pickled & Passivated
M10 M7 304 SS A2-70 SUS304 METAL BOLT Carriage Bolt Pickled & Passivated
Product Description
For stainless A2-70/A4-80 bolts used in food equipment. The entire process is governed by DIN 603, ISO 8678, ASME B18.5 and EN 14399-7 dimensional standards, so every Carriage Bolt delivers consistent head height, square width across flats, and thread fit for automatic assembly lines.After forging, bolts are immersed in acid bath to remove scale, then passivated in nitric acid, restoring 1 nm chrome-oxide film.
| Industry | Usage |
|---|---|
| Automotive | High-strength applications in engines, heavy-duty machinery, and bridge construction |
| Mechanical | Connecting mechanical parts, circuit boards, engines, transmissions in various industries |
| Energy | Connecting power generation equipment and transmission lines |
| Architectural |
Building structures, shipbuilding, and petrochemical equipment |
Key Features
Pickled surface shows consistent matte sheen that matches 2B stainless sheets; A2-70 retains 700 MPa at 150 °C pasteurisation cycles.
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