Panel spring screws are a type of specialized fastener. They’re designed to keep a steady, reliable tension in assemblies that get hit with vibrations, temperature changes, or moving loads. Unlike regular screws, they have built-in springy parts,usually in the washer or thread design,that act like a spring. This helps them hold onto clamp force and keep from loosening up.
Standard screws might give out from fatigue or relaxation in these situations, but UN spring screws step in. They’re a smart solution for tough mechanical connections that need constant pressure and vibration resistance, which really helps keep joints strong and long-lasting in rough conditions.
| Mon | 440 | 632 | 832 | 032 | 0420 |
| P | 40 | 32 | 32 | 32 | 32 |
| d1 | #4 | #6 | #8 | #10 | 1/4 |
| d2 max | 0.202 | 0.218 | 0.249 | 0.311 | 0.374 |
| dk max | 0.416 | 0.448 | 0.478 | 0.54 | 0.635 |
| dk min | 0.396 | 0.428 | 0.458 | 0.52 | 0.615 |
| h max | 0.058 | 0.058 | 0.058 | 0.058 | 0.058 |
| k max | 0.128 | 0.128 | 0.128 | 0.12 | 0.148 |
| k min | 0.118 | 0.118 | 0.118 | 0.11 | 0.138 |
| H max | 0.207 | 0.207 | 0.212 | 0.225 | 0.247 |
| H min | 0.197 | 0.197 | 0.202 | 0.215 | 0.237 |
The main reasons to choose panel spring screws are how well they keep preload and stop vibrations from making them loosen up. That really boosts how reliable and safe your assembly is. Some big pluses are needing to do less maintenance, stopping major failures in important systems, and saving cash by not needing extra locking things like nuts or glue.
UN spring screws work way better in high-stress spots, keeping a steady clamping force over time. Their clever design tackles common problems like bolt fatigue and joint slippage. For engineers who care about durability and safety in cars, planes, or industrial machines, these are a no-brainer upgrade.
Q:What materials are your panel spring screws typically made from for corrosion resistance?
A:Our regular UN spring screws are mostly made from stainless steel,like A2 (304) or A4 (316). These work great against rust in most situations. If you need something different, we can also do carbon steel with zinc plating or other coatings,just let us know. For really tough environments, we can even quote specialty alloys like Hastelloy. The material you pick will affect how long the UN spring screws last and how well they work in your specific setup.