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Smart Home & Security Device Screws

(5 products)

Replacement screws for video doorbells, security cameras, smart locks and camera base stations. Each listing names the device it fits. All are Phillips flat head metric screws in black carbon steel.

How to choose the right size

  • M3 x 4mm: wiring terminal screws for the Google Nest Doorbell and Ring Doorbell (1st gen). Sold singly or in 10-packs.
  • M2.5 x 6mm: repair screws for Eufy security cameras (single or 50-pack), and the battery cover screw on smart door lock keypads (single).
  • M3 x 3mm: holds the 2.5" SSD or HDD inside a Eufy HomeBase 3 (S380).

Not sure what you have? An M3 thread is 3mm across and an M2.5 is 2.5mm. Measure the length under the head only.

Compatibility note

Doorbell terminal screws differ between generations and brands, so check your model against the listing title. Nest and Ring doorbells run on low-voltage wiring. Turn off the doorbell transformer at the breaker before you swap terminal screws.

FAQ

What size are Ring doorbell terminal screws?

The Ring Doorbell (1st gen) terminal screws we stock are M3 x 4mm. Other Ring models may differ.

I lost a Nest Doorbell terminal screw. Which one do I need?

The M3 x 4mm Nest Doorbell terminal screw, sold singly or as a 10-pack.

Do these include the security screw for the doorbell faceplate?

No. This collection covers terminal, housing, battery cover and drive screws only.

What size is the Google Nest Doorbell screw?

The wiring terminal screws are M3 x 4mm Phillips flat head, sold singly or as a 10-pack.

Shipping: free US shipping on orders of $10 or more. Orders are processed and shipped within 24 hours, Monday–Saturday.

Fit guides: Ring Doorbell screw guide (M3 x 4mm) · Google Nest Doorbell screw guide (M3 x 4mm) · Eufy HomeBase 3 and camera screw guide · Smart lock battery cover screw guide (M2.5 x 6mm)

Smart Home & Security Device Screws
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How do I know these screws will fit my device?

Every listing states the exact metric thread, length, head type and finish. Match it against your original screw, your model's page in our model guides, or measure with the finder tool. If it's still wrong, we make it right.

Can I buy just one screw?

Yes — that's our specialty. Most sizes are sold as single screws, with 10-packs, 50-packs and 100-packs for shops and fleets. Each cart line needs to reach $4.99, so very low-priced singles are added in a small multiple.

How fast is shipping?

Orders usually ship within 24 hours (Monday to Saturday) from Elgin, South Carolina, with tracking. US orders of $25 or more ship free, and typical US transit is 1 to 5 business days. See the shipping policy.

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