The low profile hex socket screws are the same as those included in the machine tool kit, and are used for securing the L Bracket, Top Clamp, and Side Clamp.
Source: https://www.makera.com/products/stainless-steel-low-profile-hex-screw

| Variant | Price | Availability |
|---|---|---|
| M5 * 20mm (10pcs) | 1.99 USD | In Stock |
| M5 * 30mm (10pcs) | 2.49 USD | In Stock |
| M5 * 40mm (10pcs) | 2.99 USD | In Stock |