DIN7349 washer is a type of heavy structure use flat washers, with high strength and thicker bearing surface. Normally used in a high tensile bolt with spring pins (din1481). The regular material for din7349 heavy structure flat washer are spring steels, alloy steels, stainless steels, brass, bronze or copper alloys.
All measurements in millimeters (mm)
d1 | for spring pins DIN 1481 | for screws | s | d2 |
3.2 | 6 | M3 | 1 | 9 |
4.3 | 8 | M4 | 1.6 | 12 |
5.3 | 10 | M5 | 2 | 15 |
6.4 | 12 | M6 | 3 | 17 |
8.4 | 16 | M8 | 4 | 21 |
10.5 | 18 | M10 | 4 | 25 |
13 | 21 | M12 | 6 | 30 |
15 | 25 | M14 | 6 | 36 |
17 | 28 | M16 | 6 | 40 |
21 | 35 | M20 | 8 | 44 |
23 | 38 | M22 | 8 | 50 |
25 | 40 | M24 | 10 | 50 |
31 | 50 | M30 | 10 | 68 |
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