Serrated Safety Washer is a kind of Belleville Disc Spring with trapezoid cross section and serrations on both sides. Serrated Safety Washers are connected with bolt or screw, it can prevent bolt relaxation after vibration by increasing the friction resistance.
Description
Serrated Safety Washer is a kind of Belleville Disc Spring with trapezoid cross section and serrations on both sides. Serrated Safety Washers are connected with bolt or screw, it can prevent bolt relaxation after vibration by increasing the friction resistance.
Serrated safety washers are available in two different types: S type is suitable for normal duty, available for screw sizes: M1.6 to M36. VS type is thicker and therefore achieves higher pretensioning loads, be used with high strength bolts, available for screw sizes:M5 to M36.
Material:
Learn more about Materials60Si2Mn / DIN1.0909 65Mn
Surface condition and Corrosion protection:
Learn more details about Corrosion ProtectionPolish
Phosphating and oil
Mechanical Zinc Plating
Chemical Nickel Plating
Docromet / Geomet Coating
Electrophoresis
If you require a Serrated Safety Washer with different dimensions, material or surface treatment, please contact us (Tech@DiscSpringsMFG.com), our technical engineers will work closely with you to specify or design, and then manufacture the proper serrated safety washer for your application.
Specification:
| SERRATED SAFETY WASHERS - S SERIES LIGHT LOAD | |||||
| HEGONG Part No. | D(mm) | d(mm) | t(mm) | Hmax(mm) | Hmin(mm) |
| SW-S-M1.6 | 3.2 | 1.7 | 0.35 | 0.6 | 0.38 |
| SW-S-M2 | 4 | 2.2 | 0.35 | 0.6 | 0.39 |
| SW-S-M2.5 | 4.8 | 2.7 | 0.45 | 0.9 | 0.49 |
| SW-S-M3 | 5.5 | 3.2 | 0.45 | 0.9 | 0.51 |
| SW-S-M3.5 | 6 | 3.7 | 0.45 | 0.9 | 0.52 |
| SW-S-M4 | 7 | 4.3 | 0.5 | 1 | 0.59 |
| SW-S-M5 | 9 | 5.3 | 0.5 | 1.1 | 0.73 |
| SW-S-M6 | 10 | 6.4 | 0.7 | 1.2 | 0.82 |
| SW-S-M6.35 | 9.5 | 6.7 | 0.7 | 1.2 | 0.79 |
| SW-S-M7 | 12 | 7.4 | 0.7 | 1.3 | 0.89 |
| SW-S-M8 | 13 | 8.4 | 0.8 | 1.4 | 0.98 |
| SW-S-M10 | 16 | 10.5 | 1 | 1.6 | 1.21 |
| SW-S-M11.1 | 15.9 | 11.6 | 1 | 1.6 | 1.18 |
| SW-S-M12 | 18 | 13 | 1.1 | 1.7 | 1.31 |
| SW-S-M12.7 | 19 | 13.7 | 1.1 | 1.8 | 1.33 |
| SW-S-M14 | 22 | 15 | 1.2 | 2 | 1.52 |
| SW-S-M16 | 24 | 17 | 1.3 | 2.1 | 1.63 |
| SW-S-M18 | 27 | 19 | 1.5 | 2.3 | 1.85 |
| SW-S-M19 | 30 | 20 | 1.5 | 2.5 | 1.98 |
| SW-S-M20 | 30 | 21 | 1.5 | 2.5 | 1.94 |
| SW-S-M22 | 33 | 23 | 1.5 | 2.7 | 2.08 |
| SW-S-M24 | 36 | 25.6 | 1.8 | 2.9 | 2.32 |
| SW-S-M25.4 | 38 | 27 | 2 | 3.1 | 2.52 |
| SW-S-M27 | 39 | 28.6 | 2 | 3.1 | 2.52 |
| SW-S-M30 | 45 | 31.6 | 2 | 3.6 | 2.78 |
| SW-S-M33 | 50 | 34.6 | 2.5 | 4 | 3.26 |
| SW-S-M36 | 54 | 38 | 2.5 | 4.2 | 3.38 |
| SERRATED SAFETY WASHERS - VS SERIES REINFORCE LOAD | |||||
| Part No. | D(mm) | d(mm) | t(mm) | Hmax(mm) | Hmin(mm) |
| SW-VS-M5 | 9 | 5.3 | 1 | 1.3 | 1.07 |
| SW-VS-M6 | 10 | 6.4 | 1 | 1.4 | 1.08 |
| SW-VS-M8 | 13 | 8.4 | 1.2 | 1.7 | 1.32 |
| SW-VS-M10 | 16 | 10.5 | 1.5 | 2 | 1.64 |
| SW-VS-M12 | 18 | 13 | 1.5 | 2.1 | 1.65 |
| SW-VS-M14 | 22 | 15 | 1.5 | 2.2 | 1.76 |
| SW-VS-M16 | 24 | 17 | 2 | 2.6 | 2.21 |
| SW-VS-M18 | 27 | 19 | 2 | 2.7 | 2.27 |
| SW-VS-M20 | 30 | 21 | 2 | 2.8 | 2.34 |
| SW-VS-M22 | 33 | 23 | 2 | 3 | 2.42 |
| SW-VS-M24 | 36 | 25.6 | 2.5 | 3.4 | 2.87 |
| SW-VS-M4 | 38 | 27 | 2.5 | 3.4 | 2.95 |
| SW-VS-M27 | 39 | 28.6 | 2.5 | 3.5 | 2.91 |
| SW-VS-M30 | 45 | 31.6 | 2.5 | 3.8 | 3.12 |
| SW-VS-M33 | 50 | 34.6 | 3 | 4.5 | 3.65 |
| SW-VS-M36 | 54 | 38 | 3 | 4.5 | 3.72 |
