# Screw size for Starling 2 frame

Source: https://forum.modalai.com/topic/4123/screw-size-for-starling-2-frame
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2025-01-24 23:39:42 UTC by starlinguser
Replies: 2 · Views: 462

## starlinguser · 2025-01-24 23:39:42 UTC

Hi, I'm trying to get replacement screws/fasteners for the Starling 2 frame. 

They appear to be 
- phillips head
- approx 27 threads/inch
- Approx length: 7.75mm or 0.3"
- Rounded cap
- Possibly thread forming?
- smaller than M2.5 screws
I haven't been able to find replacements on mcmaster or find a model number anywhere. The CAD has the screws modeled, but there is no name for the screw since the assembly is a .STEP file.

Could anyone provide a link to mcmaster or a detailed screw description?

![screw.png](https://forum.modalai.com/assets/uploads/files/1737761936860-f1321a38-e9f0-4bfd-a21b-5da4e55cceef-image.png) 
![starling2.png](https://forum.modalai.com/assets/uploads/files/1737761963327-f9e9986e-15d3-4c2b-9bde-a84ab46c8e69-image.png)

## Reply by Alex Kushleyev (ModalAI staff) · 2025-02-07 21:13:45 UTC

@starlinguser , sorry for the delay. The part number of the screw is:

McMaster Carr 99461A922

https://www.mcmaster.com/catalog/131/3432/99461A922

Any similar M2.2x8 thread forming screw should work, but we found this one works best.

Alex

## Reply by starlinguser · 2025-02-10 17:19:28 UTC (in reply to Alex Kushleyev)

@Alex-Kushleyev Thank you, appreciate it!