China Suppliers Factory High-Strength Stainless Steel Nylon Lock Nut SS304 A2-70 A4-70 DIN985 Galvanized
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)
Common types of fastening anti-loosening nuts include mechanical anti-loosening, riveting anti-loosening, friction anti-loosening, and structural anti-loosening designs, such as anti-loosening nuts and self-tightening nuts.
When tightened, the bolt's top thread enters the 30° wedge-shaped slope of the nut and is clamped. The normal force generated on this slope forms a 60° angle with the bolt axis instead of 30°, creating a much larger normal force than standard nuts to resist vibration.
The 30° slope at the bottom of the nut thread distributes the locking force evenly across all threads. This uniform clamping force prevents thread wear and shear deformation issues.
Yes, they offer excellent reusability. Testing and application show that the locking force remains unchanged even after repeated tightening and disassembly, maintaining the original locking effect.
These nuts conform to specifications such as DIN985. They are available in various nominal diameters ranging from 1/4 to 1-1/2 inches, with specific thread pitches (UNC) and standard limits for width across flats (s), width across corners (e), and height (h, m).