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| Name | Gr 4.8 Metric Serrated Flange Lock nuts |
| Place of Origin | Jiaxing, Zhengjiang, China |
| Size | M6-M20 |
| Finish | zine plated |
| Material | carbon steel |
| Grade | 4.8/8.8 |
| Standard | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc |
| Non-standards | OEM is available, according to drawing or samples |
| Samples | Samples are free. |
| Package | Bulk in master cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T or L/C |
| Gr4.8 Chemical Composition(%) | |||||
| Grade | C | Mn | Si | S≤ | P≤ |
| 0.045 | 0.27 | 0.06 | 0.027 | 0.02 | |
| Mechanic Periormance | |
| RM（mpa) | A(%) |
| 400 | 320 |
| 螺纹规格 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||
| d | ||||||||||
| P | 螺距 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | |
| k | 最大值 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |
| 最小值 | 4.7 | 5.7 | 7.6 | 9.6 | 11.6 | 13.3 | 15.3 | 18.9 | ||
| s | 最大值 | 8 | 10 | 13 | 15 | 18 | 21 | 24 | 30 | |
| 最小值 | 7.78 | 9.78 | 12.73 | 14.73 | 17.73 | 20.67 | 23.67 | 29.16 | ||
| e | 最大值 | 9.24 | 11.55 | 15.01 | 17.32 | 20.78 | 24.25 | 27.71 | 34.64 | |
| 最小值 | 8.79 | 11.05 | 14.38 | 16.64 | 20.03 | 23.35 | 26.75 | 32.95 | ||
| dc | 最大值 | 11.8 | 14.2 | 17.9 | 21.8 | 26 | 29.9 | 34.5 | 42.8 | |
| c | 最小值 | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |
