Stainless Steel Nylon Lock Nut SS304 A2-70 A4-70 - High-Strength Fasteners from China Suppliers & Factory
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 | 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.
1. Superior Anti-Vibration
When the thread is tightened, the thread at the top of the bolt tightly enters the 30° wedge-shaped slope of the nut and is clamped. 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 is much greater than that of ordinary standard nuts, providing excellent anti-loosening and anti-vibration capabilities.
2. Wear & Shear Resistance
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.
3. Good Reusability
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 continuously.
Frequently Asked Questions (FAQ)
What are the main types of anti-loosening nuts?
Anti-loosening and self-tightening nuts include mechanical anti-loosening, riveting anti-loosening, friction anti-loosening, and structural anti-loosening methods.
How do anti-loosening nuts achieve superior anti-vibration performance?
When tightened, the bolt thread enters the 30° wedge-shaped slope of the nut. The normal force generated on this slope forms a 60° angle with the bolt axis instead of 30°, creating a much larger normal force to resist loosening and vibration.
Why do these nuts have strong wear and shear resistance?
The 30° slope at the bottom of the nut thread distributes the locking force evenly across all threads, effectively preventing individual thread wear and shear deformation.
Can the anti-loosening nuts be reused?
Yes. These nuts feature excellent reusability, meaning their locking force and effectiveness remain unchanged even after repeated tightening and disassembly cycles.
What specifications and materials are available for these nuts?
They are available in materials such as Stainless Steel SS304 (A2-70, A4-70) and Galvanized High-Strength steel, conforming to standards like DIN985, with nominal diameters ranging from 1/4 to 1-1/2 inches.