The 304 Stainless Steel JIS B 1251 Spring Washer is a high-performance helical lock washer designed to prevent loosening and maintain tension in bolted assemblies. Manufactured according to the Japanese Industrial Standard JIS B 1251, this spring washer ensures consistent performance, dimensional precision, and reliability. Crafted from durable 304 stainless steel, it offers outstanding corrosion resistance and mechanical strength, making it ideal for demanding applications in both industrial and commercial environments. The JIS B 1251 Spring Washer is engineered for precision and reliability. Its combination of superior stainless steel strength, standardized design, and anti-loosening performance ensures that fasteners stay secure even in high-vibration environments, making it ideal for everything from securing heavy machinery to critical outdoor infrastructure.
Parameter Information
|
Brand Name |
|
|
Type |
Helical Spring Washer (Split Lock Washer) |
|
Standard |
JISB 1251 |
|
Category |
Elastic Pad |
|
Material |
304 Stainless Steel |
|
Standard Type |
Japanese Standard |
|
Surface Treatment |
Stainless steel washing |
|
Packaging |
Packaging bag + carton packaging |
Specification
|
Nominal diameter |
d |
b |
t |
dc |
ho |
|||||
|
min= nominal |
max |
nominal |
max |
min |
nominal |
max |
min |
max |
(≈1.5t) |
|
|
Φ2.5 |
2.6 |
2.9 |
1 |
1.1 |
0.9 |
0.6 |
0.7 |
0.5 |
5.2 |
0.9 |
|
Φ3 |
3.1 |
3.4 |
1.3 |
1.4 |
1.2 |
0.7 |
0.8 |
0.6 |
6.3 |
1.05 |
|
Φ3.5 |
3.6 |
3.9 |
1.3 |
1.4 |
1.2 |
0.7 |
0.8 |
0.6 |
6.8 |
1.05 |
|
Φ4 |
4.1 |
4.4 |
1.5 |
1.6 |
1.4 |
0.8 |
0.9 |
0.7 |
1.7 |
1.2 |
|
Φ5 |
5.1 |
5.4 |
1.8 |
1.9 |
1.7 |
1 |
1.1 |
0.9 |
9.4 |
1.5 |
|
Φ6 |
6.1 |
6.5 |
2.5 |
2.65 |
2.35 |
1.2 |
1.3 |
1.1 |
11.9 |
1.8 |
|
Φ8 |
8.2 |
8.6 |
3 |
3.15 |
2.85 |
1.6 |
1.7 |
1.5 |
15 |
2.4 |
|
Φ10 |
10.2 |
10.8 |
3.5 |
3.7 |
3.3 |
1.8 |
1.95 |
1.65 |
18.4 |
2.7 |
|
Φ12 |
12.2 |
13 |
4 |
4.2 |
3.8 |
2.1 |
2.25 |
1.95 |
21.6 |
3.15 |
|
Φ14 |
14.2 |
15 |
4.5 |
4.7 |
4.3 |
2.4 |
2.55 |
2.25 |
24.6 |
3.6 |
|
Φ16 |
16.2 |
17.2 |
5 |
5.2 |
4.8 |
2.8 |
3 |
2.6 |
27.8 |
4.2 |
|
Φ18 |
18.2 |
19.2 |
5.5 |
5.7 |
5.3 |
3 |
3.2 |
2.8 |
30.6 |
4.5 |
|
Φ20 |
20.2 |
21.4 |
6 |
6.2 |
5.8 |
3.2 |
3.4 |
3 |
33.8 |
4.8 |
|
Φ22 |
22.5 |
23.7 |
6.5 |
6.7 |
6.3 |
3.5 |
3.7 |
3.3 |
37.1 |
5.3 |
|
Φ24 |
24.5 |
25.7 |
7 |
7.25 |
6.75 |
3.8 |
4.05 |
3.55 |
40.2 |
5.7 |
|
Φ27 |
27.5 |
28.7 |
7 |
7.25 |
6.75 |
4 |
4.25 |
3.75 |
43 |
6 |
