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DIN9250 SS
This range of Safety Washers is based on the Disc Spring concept. The washer has the unique feature of radial serrations on both the concave and convex surfaces. When tightened to near capacity these serrations bite into the mating surfaces, thus preventing the loosening of the screw due to vibration and other similar circumstances. The Safety Washer offers a reduced outside diameter compared with a conventional Disc Spring Washer. This corresponds to most screw head sizes and is very compatible with the hexagonal socket type screw.
Safety washers are available in two versions: the standard safety washer type “S” is available for screws of sizes M1.6 to M36 and of the property classes up to 8.8.
Size
|
part no. |
Size |
d (mm) |
D (mm) |
h (mm) |
H (mm) |
Kg/ 1000pcs |
||
|
M |
inch |
Nomin. |
Nom |
Nomin. |
Min |
Max |
||
|
CNBLW9250SSM1.6 |
1.6 |
- |
1.7 |
3.2 |
0.5 |
0.55 |
0.75 |
0.019 |
|
CNBLW9250SSM2 |
2 |
- |
2.2 |
4 |
0.5 |
0.55 |
0.75 |
0.029 |
|
CNBLW9250SSM2.5 |
2.5 |
- |
2.7 |
4.8 |
0.5 |
0.55 |
0.95 |
0.042 |
|
CNBLW9250SSM3 |
3 |
1/8 |
3.2 |
5.5 |
0.5 |
0.55 |
0.95 |
0.042 |
|
CNBLW9250SSM3.5 |
3.5 |
- |
3.7 |
6 |
0.7 |
0.75 |
1.15 |
0.084 |
|
CNBLW9250SSM4 |
4 |
5/32 |
4.3 |
7 |
0.7 |
0.75 |
1.2 |
0.081 |
|
CNBLW9250SSM5 |
5 |
3/16 |
5.3 |
9 |
0.7 |
0.75 |
1.2 |
0.209 |
|
CNBLW9250SSM6 |
6 |
- |
6.4 |
10 |
0.7 |
0.75 |
1.2 |
0.193 |
|
CNBLW9250SSM6.35 |
6.35 |
1/4 |
6.7 |
9.5 |
0.7 |
0.75 |
1.2 |
0.172 |
|
CNBLW9250SSM8 |
8 |
5/16 |
8.4 |
13 |
1 |
1.2 |
1.6 |
0.557 |
|
CNBLW9250SSM10 |
10 |
3/8 |
10.5 |
16 |
1 |
1.1 |
1.6 |
0.731 |
|
CNBLW9250SSM11.1 |
11.1 |
7/16 |
11.6 |
15.9 |
1.3 |
1.3 |
1.85 |
0.825 |
|
CNBLW9250SSM12 |
12 |
- |
13 |
18 |
1.3 |
1.3 |
1.85 |
1.099 |
|
CNBLW9250SSM12.7 |
12.7 |
1/2 |
13.7 |
19 |
1.3 |
1.4 |
1.95 |
1.222 |
|
CNBLW9250SSM14 |
14 |
- |
15 |
22 |
1.5 |
1.65 |
2.3 |
2.244 |
|
CNBLW9250SSM16 |
16 |
5/8 |
17 |
24 |
1.5 |
1.75 |
2.3 |
2.487 |
|
CNBLW9250SSM18 |
18 |
- |
19 |
27 |
1.8 |
2.05 |
2.6 |
3.843 |
|
CNBLW9250SSM19 |
19 |
3/4 |
20 |
30 |
1.8 |
2.2 |
2.6 |
5.294 |
|
CNBLW9250SSM20 |
20 |
- |
21 |
30 |
1.8 |
2.15 |
2.8 |
3.923 |
|
CNBLW9250SSM22 |
22 |
7/8 |
23 |
33 |
1.8 |
2.3 |
3 |
5.893 |
|
CNBLW9250SSM24 |
24 |
- |
25.6 |
36 |
2 |
2.35 |
3.1 |
7.508 |
|
CNBLW9250SSM25.4 |
25.4 |
1 |
27 |
37 |
2.5 |
2.85 |
3.6 |
10.508 |
|
CNBLW9250SSM27 |
27 |
- |
28.6 |
39 |
2.5 |
2.85 |
3.6 |
10.3 |
|
CNBLW9250SSM30 |
30 |
1-1/8 |
31.6 |
45 |
2.5 |
3.1 |
4.1 |
15.185 |
|
CNBLW9250SSM36 |
36 |
1-3/8 |
38 |
54 |
3 |
3.7 |
4.7 |
26.218 |
Materials
| SS304 |
| SS316 |
| A2 |
| A4 |
Finish
| Polishing |
Appliction
| Used in many industries: energy, transportation, marine, mining ,construction and bridge construction, manufacturing, processing, shipbuilding, forestry and agriculture, heavy vehicles and military. |
Advantages
| The trapezoidal cross section makes the locking force act on the outer diameter to ensure the maximum resistance to loosening. |
| Tooth shape design effectively prevents vibration loosening. |
| Closed circular design produces high pre-tightening force and excellent friction connection. |
| High load concentricity can avoid bolt bending when tightening. |
| Smooth tooth edge, avoid scratching bolt surface when locking. |
