Tags: anti-theft screw size, security doorbell, replacement screw, mounting bracket, doorbell maintenance, hardware specifications, 3mm Philips flathead screw, secure installation, hardware store, doorbell installation, mounting hardware, device security, screw replacement guide, theft-proof installation, security system setup, camera mounting accessories, installation troubleshooting, video doorbell setup, component replacements, device mounting solutions, doorbell protection
If you've misplaced the anti-theft or anti-tamper screw that secures your Swann doorbell to the mounting bracket, it’s important to know the correct replacement size. The screw specification depends on the model number of your doorbell which can be found at the back of the doorbell; be sure you have it ready, then check the table below:
| Swann Doorbell Model Number |
Anti-theft/Anti-tamper Screw Specification |
| SWIFI-SEVDBC - Swann EVO Wireless Video Doorbell |
M2 x 4mm long. Countersunk Phillips Head |
| SWIFI-4KBUDDY - SwannBuddy4K™ Video Doorbell |
M2 x 4mm long. Countersunk Phillips Head |
| SWIFI-BUDDY - SwannBuddy™ Video Doorbell |
M2 x 4mm long. Countersunk Phillips Head |
| NVW-MR4KVDB - MaxRanger4K™ Video Doorbell |
M3 x 6mm (full-length). Countersunk Phillips Head |
Sample image below from Swann EVO Wireless Video Doorbell (SWIFI-SEVDBC)

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For the most accurate replacement, we recommend taking your doorbell to a local hardware store. This ensures you get the right screw for a secure and hassle-free installation, reinforcing the safety and reliability of your Swann security system.