Ultra-High Torque Washer (≦600℃)
Supply of 20813 American Standard disc spring, disc spring, high-temperature can reach 600 degree C.
| Item no. | Bolt size metric | D/mm | d/mm | t/mm | H0/mm | Suggest torque ／N.m |
| SY1501 | M10 | 18.5 | 10.4 | 3 | 3.2 | 43 |
| SY1502 | M12 | 21.5 | 12.4 | 3.65 | 3.85 | 75 |
| SY1503 | M14 | 25.5 | 14.4 | 4.25 | 4.5 | 120 |
| SY1504 | M16 | 30 | 16.4 | 5 | 5.35 | 165 |
| SY1505 | M18 | 32.5 | 18.4 | 6 | 5.2 | 300 |
| SY1506 | M20 | 40 | 20.8 | 6.25 | 6.55 | 375 |
| SY1507 | M22 | 40.5 | 22.8 | 7.5 | 7.85 | 435 |
| SY1508 | M24 | 43.5 | 24.8 | 7.5 | 7.9 | 660 |
| SY1509 | M27 | 48.5 | 27.8 | 8.5 | 8.8 | 950 |
| SY1510 | M30 | 54 | 30.8 | 9.5 | 10 | 1285 |
| SY1511 | M32 | 58.5 | 32.8 | 9.5 | 10.15 | 1020 |
| SY1512 | M33 | 60 | 33.8 | 10.5 | 11 | 1765 |
| SY1513 | M36 | 65.5 | 36.8 | 11.5 | 12 | 2260 |
| SY1514 | M39 | 68 | 39.8 | 13 | 13.5 | 1450 |
| SY1515 | M42 | 75 | 42.8 | 14.5 | 15.15 | 2980 |
| SY1516 | M48 | 86 | 48.8 | 14.75 | 15.6 | 5420 |
| SY1517 | M52 | 91.5 | 52.8 | 16 | 16.85 | 6000 |
| SY1518 | M64 | 114 | 64.8 | 20 | 21 | 12000 |
| SY1519 | M70 | 125 | 70.8 | 22 | 23.25 | 16000 |
| SY1520 | M90 | 155 | 91 | 21.5 | 23 | 19000 |
| SY1521 | M100 | 180 | 101 | 18 | 20.5 | 18500 |