Description
The 304 Stainless Steel JIS B1181 Hex Nut is a precision-manufactured metric fastener designed to meet the dimensional and performance requirements of the Japanese Industrial Standard JIS B1181. Made from high-quality 304 stainless steel, this hex nut delivers excellent corrosion resistance, mechanical strength, and long-term durability in demanding environments.
Commonly used in industrial, automotive, construction, and equipment assembly applications, this hex nut provides a dependable fastening solution where resistance to rust, moisture, and mild chemical exposure is required.
Features & Benefits
- Durable and Corrosion-Resistant: Constructed from 304 stainless steel, these nuts offer high wear resistance, strong oxidation resistance, and will not rust in humid environments. They are beautiful, practical, and have high hardness, preventing deformation.
- Standardized Design: The nuts feature a standard hexagonal shape and are considered standard parts, ensuring that they are not easy to slip when locked. They meet the precise dimensional standards set by the JIS B1181.
- High-Quality Threading: With deep and uniform threads, this nut offers superior gripping power, ensuring a secure fit and preventing slippage during application.
- High Hardness and Strength: The material offers high hardness, which prevents deformation even under the stress of heavy-duty applications. Beyond their high strength, these nuts are designed to be both beautiful and practical for various exposed applications.
Specification
|
d |
M16 |
M20 |
M24 |
M30 |
M36 |
M42 |
M48 |
M56 |
M64 |
|
|
p |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
6 |
|
|
c |
max |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
1 |
1 |
1 |
1 |
|
min |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.3 |
0.3 |
0.3 |
0.3 |
|
|
da |
max |
17.3 |
21.6 |
25.9 |
32.4 |
38.9 |
45.4 |
51.8 |
60.5 |
69.1 |
|
min |
16 |
20 |
24 |
30 |
36 |
42 |
48 |
56 |
64 |
|
|
dw |
min |
22.5 |
27.7 |
33.3 |
42.8 |
51.1 |
60 |
69.5 |
78.7 |
88.2 |
|
e |
min |
26.75 |
32.95 |
39.55 |
50.85 |
60.79 |
71.3 |
82.6 |
93.56 |
104.86 |
|
m |
max |
14.8 |
18 |
21.5 |
25.6 |
31 |
34 |
38 |
45 |
51 |
|
min |
14.1 |
16.9 |
20.2 |
24.3 |
29.4 |
32.4 |
36.4 |
43.4 |
49.1 |
|
|
mw |
min |
11.3 |
13.5 |
16.2 |
19.4 |
23.5 |
25.9 |
29.1 |
34.7 |
39.3 |
|
s |
max |
24 |
30 |
36 |
46 |
55 |
65 |
75 |
85 |
95 |
|
min |
23.67 |
29.16 |
35 |
45 |
53.8 |
63.1 |
73.1 |
82.8 |
92.8 |
|
FAQ:
Q1: What is the JIS B1181 standard?
JIS B1181 is a Japanese Industrial Standard that specifies the dimensions, tolerances, and requirements for metric hexagonal nuts.
Q2: What is the benefit of using a JIS B1181 standard nut?
A: This standard ensures that the hex nut meets precise dimensional requirements, making it a reliable standard part that fits perfectly and is less likely to slip during locking.
Q3: Can these nuts be used outdoors?
A: Yes. Since they are made of 304 stainless steel, they offer strong oxidation resistance and will not rust in humid or outdoor environments.
Q4: Does the threading prevent the nut from coming loose?
A: The deep and uniform threading is specifically designed to offer superior gripping power, ensuring a secure fit and significantly reducing the risk of slippage during application.
Q5: Is this nut suitable for heavy-duty applications?
Yes. Its high hardness, deformation resistance, and secure threading make it suitable for both standard and heavy-duty fastening needs.




