| Attribute | Value |
|---|---|
| Usage | Fastening |
| Style | Square washer |
| Size | Various sizes available |
| Head Style | Square washer |
| Strength | High |
| Finish | Zinc plating |
| Manufacturer | JIA SHAN Hardward Company |
| Length | Customizable |
| Package | Small Packing + Carton Packing + Pallet |
| Standard | DIN |
| Package Quantity | 100 pieces |
| Shape | Self Tapping Screws |
| Measurement System | INCH, Metric |
| Port | Shenzhen |
| Quality | Inspection before shipment |
| Color | Customizable |
| Material | Carbon steel |
Washers are available in various types including:
Flat washers are typically used in connections involving soft materials to increase contact area, disperse pressure, and prevent material damage. Spring washers (made from 65Mn spring steel, HRC44-51 hardness) provide additional friction between nut and bolt after tightening.
Carbon steel advantages:
Limitations:
Zinc plating provides rust-resistant silver-white finish (can be passivated to white, colored, or army green).
| Grade | C% | Cr% | Ni% | Mo% |
|---|---|---|---|---|
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
| 304L | 0.03 | 18-20 | 8-12 | / |
| 316L | 0.03 | 16-18 | 10-14 | 2-3 |
| 321 | 0.08 | 17-19 | 9-12 | / |