|
Nominal Size or
Basic Major Diameter of Thread
|
Number
of
Thread Starts
|
s |
e |
b |
h |
k |
j |
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Min.
|
Min.
|
8 "
|
0.1640
|
0.344 |
0.334
|
0.397
|
0.381
|
0.469
|
0.452
|
0.20.
|
0.187
|
0.13
|
0.02
|
| 10 " |
0.1900 |
0.375 |
0.365 |
0.433 |
0.416 |
0.500 |
0.480 |
0.219 |
0.203 |
0.13 |
0.03 |
| 12 " |
0.2160 |
0.438 |
0.428 |
0.505 |
0.488 |
0.594 |
0.574 |
0.236 |
0.222 |
0.14 |
0.04 |
| 5/8 " |
0.6250 |
0.938 |
0.922 |
1.083 |
1.051 |
1.281 |
1.248 |
0.569 |
0.545 |
0.40 |
0.05 |
| 3/4 " |
0.7500 |
1.125 |
1.088 |
1.299 |
1.240 |
1.500 |
1.460 |
0.675 |
0.627 |
0.46 |
0.06 |
| 7/8 " |
0.8750 |
1.179 |
1.166 |
1.361 |
1.295 |
1.682 |
- |
0.786 |
0.742 |
- |
0.11 |
| Proof Load |
Size Range |
Equivalent Standards |
| Property Class |
Diameter |
Length |
| PSI |
N/mm2 |
Grade |
Metric |
Inch |
Metric |
Inch |
IS |
ISO |
DIN |
BS |
ANSI |
JIS |
| 74000 to 174000 |
510 to 1200 |
4 to 12 |
M8 to M2 |
0.3“ to 7/8 " |
- |
- |
15581 |
4161 |
6923 |
- |
B18.2.2 |
B1190 |
Introduction to Serrated Flange Nuts
Serrated flange nuts are a unique category of fasteners distinguished by their integrated flange and serrated bearing surface. The flange acts as a built-in washer, distributing the load over a larger area, while the serrations provide a locking mechanism that resists loosening due to vibrations. This combination makes them indispensable in applications where maintaining a secure joint is critical.
Design and Functionality
The design of serrated flange nuts offers several advantages:
Integrated Flange: The built-in flange distributes pressure evenly, reducing the risk of damage to the connected surfaces and eliminating the need for separate washers.
Serrated Bearing Surface: The serrations bite into the mating surface, preventing the nut from loosening under vibration or dynamic loads.
Ease of Assembly: By combining the functions of a nut and washer, serrated flange nuts simplify the assembly process, saving time and reducing the number of components required.
Applications
Serrated flange nuts are widely used across various industries:
Automotive Industry: Utilized in securing components subject to constant vibration, such as engine parts and suspension systems.
Construction: Employed in structural assemblies where maintaining joint integrity is essential.
Machinery: Applied in equipment and machinery to ensure components remain securely fastened during operation.
Material and Size Variations
These nuts are available in multiple materials, including stainless steel, carbon steel, and alloy steel, catering to different environmental conditions and strength requirements. Size options range from M3 to M20, accommodating various bolt diameters and application needs.
Advantages Over Traditional Nuts
Compared to standard hex nuts combined with washers, serrated flange nuts offer:
Enhanced Vibration Resistance: The serrated design provides superior locking capability, reducing the likelihood of loosening.
Simplified Inventory: Combining the nut and washer into a single component reduces inventory complexity and storage requirements.
Cost Efficiency: The integrated design can lead to cost savings in both procurement and assembly processes.
Conclusion
Incorporating serrated flange nuts into your fastening solutions ensures a reliable and efficient assembly, particularly in applications prone to vibration and dynamic loads. Their unique design offers both functional and economic benefits, making them a preferred choice in various industrial sectors.