> For the complete documentation index, see [llms.txt](https://tempdocs.zerog.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tempdocs.zerog.one/projects/hydra/bill-of-material.md).
# Bill of Material
The tables contain a column named `Stores`. Click the [red text](https://docs.zerog.one/manual/build/hydra/bill_of_material#) underneath to reveal a pop-up with a list of stores. Stores that contain a checkmark have been verified and tested by either an Engineer or a trusted community member.
### Kits
We **do not** own the kits. We’re **not responsible** for these kits. **Make sure to check the included hardware**. These kits might not contain all the hardware needed.
#### All kits
| Type | Stores |
| --------- | ----------------------------------------------------------------------------------- |
| Hydra kit | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#hydra_kits) |
## Self sourcing
### Bolts
| Size | Type | Amount | Stores |
| ----- | -------------------- | ------ | ------------------------------------------------------------------------------------ |
| M3X6 | ISO 10642 / DIN 7991 | 6 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m3x6_7991) |
| M3X8 | ISO 4762 / DIN 912 | 85 | [Click here](broken://pages/Q0RxUEio22ZqY8XylQah#m3-x-8mm-shcs) |
| M3X10 | ISO 4762 / DIN 912 | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m3x10_912) |
| M4X16 | ISO 4762 / DIN 912 | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m4x16_912) |
| M5X8 | ISO 7380 / DIN 7380 | 4 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m5x8_7380) |
| M5X10 | ISO 4762 / DIN 912 | 18 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m5x10_912) |
### T-Nuts
| Size | Type | Amount | Stores |
| ---- | --------------------- | ------ | ----------------------------------------------------------------------------------------- |
| M3 | Roll in spring loaded | 24 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m3_rollin_tnut) |
| M5 | Roll in spring loaded | 22 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m5_rollin_tnut) |
### Extrusions
*Note: Ender 5 (Pro) and Ender 5 Plus have different sizes for parts.*
| Printer | Size | Type | Amount | Stores |
| ------------- | ----- | -------------- | ------ | ----------------------------------------------------------------------------------------- |
| Ender 5 (Pro) | 400mm | 2020 Extrusion | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#extrusion_2020) |
| Ender 5 Plus | 510mm | 2020 Extrusion | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#extrusion_2020) |
### Linear rails
*Note: Ender 5 (Pro) and Ender 5 Plus have different sizes for parts.*
| Printer | Size | Type | Amount | Stores |
| ------------- | ----- | ---------------- | ------ | -------------------------------------------------------------------------------------- |
| X | 100mm | MGN9C | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#MGN9C_100mm) |
| Ender 5 (Pro) | 400mm | MGN12C OR MGN12H | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#MGN12_400mm) |
| Ender 5 Plus | 500mm | MGN12C OR MGN12H | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#MGN12_500mm) |
### Leadscrew
*Note: Ender 5 (Pro) and Ender 5 Plus have different sizes for parts. Leadscrews can vary in sizes.*
Make sure to look for Leadscrews that include a circular T8 Nut with 4 holes.
| Printer | Size Range | Type | Amount | Stores |
| ------------- | ------------- | ------------- | ------ | ---------------------------------------------------------------------------------------- |
| Ender 5 (Pro) | 350mm / 370mm | TR8 Leadscrew | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#TR8_Leadscrew) |
| Ender 5 Plus | 450mm / 470mm | TR8 Leadscrew | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#TR8_Leadscrew) |
### Magnets
| Size | Type | Amount | Stores |
| ---------------- | ---------------------------------------------------- | ------ | ----------------------------------------------------------------------------------------- |
| 12x5mm or 12x4mm | 4mm hole Neodymium
Countersunk Ring Magnet
| 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#12x5_cs_magnet) |
### Bed
| Printer | Size | Type | Amount | Stores |
| ------------- | ------------- | ----------------- | ------ | ------------------------------------------------------------------------------------- |
| Ender 5 (Pro) | 255/275mm | Bed heater | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#bed_heater) |
| Ender 5 Plus | 377mm | Bed heater | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#bed_heater) |
| Ender 5 (Pro) | 255/275mm | Aluminum bed | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#hydra_bed) |
| Ender 5 Plus | 377mm | Aluminum bed | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#hydra_bed) |
| X | Case specific | Solid State Relay | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#ssr) |
### Misc
| Size | Type | Amount | Stores |
| ----------------- | ------------------------------------------- | ------ | ---------------------------------------------------------------------------------------------- |
| 2020 | 2020 Corner bracket | 2 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#2020_corner_bracket) |
| M3 X D5.0 X L4.0 | Heatset insert | 39 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#heatset_insert) |
| M3 Washer | Normal grade A M3
Stainless Steel
| 12 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#plain_m3_washer) |
| M4 X 8 X L8 | Spacer | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#8mm_spacers) |
| 10mm M4 | Kossel ball | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#m4_kossel_balls) |
| 10x11mm - 1 Meter | R18 Drag chain | 1 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#10x11_drag_chain) |
| Nema17 | Stepper motor | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#nema17_zaxis) |
| 5mm-8mm | Shaft Coupling | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#stepper_coupler) |
| OPTIONAL | Oldham Coupling | 3 | [Click here](https://docs.zerog.one/manual/build/hydra/bill_of_material#oldham_coupler) |
---
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