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| Name | DIN 25201 Black Oxide Double fold self-locking washer |
| Grade | 4.8,8.8,10.9.12.9 |
| Standards | DIN,GB |
| Material | Carbon Steel,65Mn |
| Surface | Black Oxide |
| Grade | 4.8,8.8,10.9.12.9 |
| Standards | GB, DIN, ISO, ANSI/ASTM, B7, BS, JIS etc |
| Material | Carbon Steel |
| Surface | Zinc-Pate |
| Size | M2-M10 |
| Standard: | DIN25201 | |
| Material: | 65Mn/Carbon Steel/ | |
| Size: | M2-M10 | |
| Grade: | 4.8,8.8 | |
| Surface Treatment: | Black,Zinc Plated,Dacromet | |
| Size | M5-M100 or non-standard as request&design |
| Finish | plain, zinc plated, black oxide, hot dip galv.et |
| Head Type | FLAT WASHER |
| Material | Carbon steel, stainless steel, alloys steel etc. |
| Grade | 4.8,8.8,10.9,12.9.etc |
| Standard | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc |
| Non-standards | OEM is available, according to drawing or samples |