High-Strength Stainless Steel Nylon Lock Nut SS304 A2-70 A4-70 - China Suppliers & Factory Direct Supply
Production Parameter
| Nominal diameter d | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | |
| d | 0.25 | 0.3125 | 0.375 | 0.4375 | 0.5 | 0.5625 | 0.625 | 0.75 | 0.875 | 1 | 1.125 | 1.25 | 1.375 | 1.5 | |
| PP | UNC | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 |
| s | Max | 0.439 | 0.502 | 0.564 | 0.627 | 0.752 | 0.877 | 0.94 | 1.064 | 1.252 | 1.44 | 1.627 | 1.815 | 2.008 | 2.197 |
| Min | 0.43 | 0.489 | 0.551 | 0.616 | 0.736 | 0.861 | 0.922 | 1.052 | 1.239 | 1.427 | 1.614 | 1.801 | 1.973 | 2.159 | |
| e | Min | 0.482 | 0.552 | 0.622 | 0.698 | 0.837 | 0.978 | 1.051 | 1.191 | 1.403 | 1.615 | 1.826 | 2.038 | 2.232 | 2.444 |
| h | Max | 0.328 | 0.359 | 0.468 | 0.468 | 0.609 | 0.656 | 0.765 | 0.89 | 0.999 | 1.078 | 1.203 | 1.422 | 1.609 | 1.64 |
| Min | 0.298 | 0.329 | 0.438 | 0.438 | 0.579 | 0.626 | 0.735 | 0.86 | 0.969 | 1.016 | 1.141 | 1.36 | 1.547 | 1.578 | |
| m | Min | 0.225 | 0.25 | 0.335 | 0.324 | 0.464 | 0.469 | 0.593 | 0.742 | 0.79 | 0.825 | 0.93 | 1.125 | 1.282 | 1.313 |
Production Description
Anti loosening nuts and self tightening nuts are common types of fastening anti loosening nuts. Including mechanical anti loosening, riveting anti loosening, friction anti loosening, structural anti loosening, etc.
When the thread is tightened, the thread thread thread at the top of the bolt tightly enters the 30 ° wedge-shaped slope of the nut and is clamped, and the normal force generated on the wedge-shaped slope forms a 60 ° angle with the axis of the bolt, rather than a 30 ° angle. Therefore, the normal force generated when tightening the anti loosening nut is much greater than that of ordinary standard nuts, which has great anti loosening and anti vibration capabilities.
the 30 ° slope at the bottom of the nut thread can evenly distribute the locking force of the nut on all threads. Due to the uniform distribution of clamping force on each thread surface, the nut can effectively solve the problems of thread wear and shear deformation.
extensive use has shown that the locking force of the anti loosening nut remains unchanged after repeated tightening and disassembly, and the original locking effect can be maintained.
Frequently Asked Questions (FAQ)
Nylon lock nuts feature a nylon insert that resists loosening caused by vibration and dynamic loads. The wedge-shaped slope design increases the locking force significantly compared to standard nuts.
Yes, they offer excellent reusability. Tests show that the clamping and locking force remains highly effective even after repeated tightening and disassembly processes.
They are manufactured using high-quality materials including Stainless Steel (SS304 A2-70, A4-70) and Galvanized High-Strength carbon steel to ensure durability and rust resistance.
The 30° slope at the bottom of the thread distributes the locking force uniformly across all engaged threads. This uniform load distribution prevents concentrated wear and reduces the risk of shear deformation.
These nuts follow standard specifications such as DIN985, ensuring compatibility and precision fit for industrial, automotive, and structural applications.