The 304/316 Stainless Steel DIN25201 Wedge Locking Washer is a high-performance anti-loosening fastener engineered to deliver maximum security for bolted joints exposed to vibration, dynamic loads, and thermal expansion. Designed according to the DIN 25201 standard, this Wedge Locking Washer uses a dual-layer wedge mechanism to provide self-locking performance that maintains tension and prevents loosening - even under extreme conditions. Manufactured using premium 304 or 316 stainless steel, it ensures long-lasting corrosion resistance and structural reliability across harsh indoor and outdoor environments. This double stack self-locking washer system is widely used in high-vibration industries such as automotive, rail, marine, heavy machinery, construction, wind power, and industrial equipment - where safety, stability, and fastening reliability are critical.
Parameter Information
|
Brand Name |
Double Stack Self-Locking Washer |
|
Standard |
DIN25201 |
|
Category |
Flat gasket |
|
Material |
304 / 316 Stainless Steel |
|
Structure |
Two-piece wedge-locking washer set |
|
Locking Mechanism |
Mechanical Cam Lock (Tension-based) |
|
Standard Type |
German standard |
|
Surface Treatment |
Stainless steel washing |
|
Packaging |
Packaging bag + carton packaging |
Specification
|
Specifications -D |
Inside Diameter -d |
Outside Diameter -dc |
Thickness -h |
|||||
|
max |
min |
nominal |
max |
min |
nominal |
max |
min |
|
|
M3 |
3.5 |
3.3 |
7 |
7.2 |
6.8 |
2.2 |
2.45 |
1.95 |
|
M3.5 |
4 |
3.8 |
7.6 |
7.8 |
7.4 |
2.2 |
2.45 |
1.95 |
|
M3.5 Plus |
4 |
3.8 |
9 |
9.2 |
8.8 |
2.2 |
2.45 |
1.95 |
|
M4 |
4.5 |
4.3 |
7.6 |
7.8 |
7.4 |
2.2 |
2.45 |
1.95 |
|
M4 Plus |
4.5 |
4.3 |
9 |
9.2 |
8.8 |
2.2 |
2.45 |
1.95 |
|
M5 |
5.5 |
5.3 |
9 |
9.2 |
8.8 |
2.2 |
2.45 |
1.95 |
|
M5 Plus |
5.5 |
5.3 |
10.8 |
11 |
10.6 |
2.2 |
2.45 |
1.95 |
|
M6 |
6.6 |
6.4 |
10.8 |
11 |
10.6 |
2 |
2.5 |
1.75 |
|
M6 Plus |
6.6 |
6.4 |
13.5 |
13.7 |
13.3 |
2 |
2.5 |
1.75 |
|
M8 |
8.8 |
8.6 |
13.5 |
13.7 |
13.3 |
2 |
2.5 |
1.75 |
|
M8 Plus |
8.8 |
8.6 |
16.6 |
16.8 |
16.4 |
2 |
2.5 |
1.75 |
|
M10 |
10.9 |
10.5 |
16.6 |
16.8 |
16.4 |
2 |
2.5 |
1.75 |
|
M10 Plus |
10.9 |
10.5 |
21 |
21.2 |
20.8 |
2 |
2.5 |
1.75 |
|
M12 |
13.2 |
12.8 |
19.5 |
19.7 |
19.3 |
2 |
2.5 |
1.75 |
|
M12 Plus |
13.2 |
12.8 |
25.4 |
25.6 |
25.2 |
3 |
3.25 |
2.75 |
|
M14 |
15.4 |
15 |
23 |
23.2 |
22.8 |
3 |
3.25 |
2.75 |
|
M14 Plus |
15.4 |
15 |
30.7 |
30.9 |
30.5 |
3.2 |
3.45 |
2.95 |
|
M16 |
17.2 |
16.8 |
25.4 |
25.6 |
25.2 |
3 |
3.25 |
2.75 |
|
M16 Plus |
17.2 |
16.8 |
30.7 |
30.9 |
30.5 |
3.2 |
3.45 |
2.95 |
