# Gemfan 1608 40 mm 3-blade propeller (1.5 mm)

> What are the dimensions of the Gemfan 1608 40 mm 3-blade propeller (1.5 mm)?

- Category: Drones › Propellers
- Kind: Modern device
- Basis: Secondary source: GetFPV (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/gemfan-1608-40mm-3-blade/ · JSON: https://xemstudio.com/api/geometry?object=gemfan-1608-40mm-3-blade · Plain text: https://xemstudio.com/objects/gemfan-1608-40mm-3-blade/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 40 | 40 | 5 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Whoop prop for 1102-class motors on 1.5 mm shafts.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Diameter | 40 mm (1.6 in) |
| Pitch | 0.8 in |
| Hub thickness | 5 mm |
| Bore / mount | 1.5 mm hub ID |
| Weight | 0.42 g |
| Blades | 3 |

## Where the files are

- GetFPV: [Gemfan 40mm 1608 3-Blade PC (1.5mm)](https://www.getfpv.com/gemfan-40mm-1608-3-blade-polycarbonate-propeller-set-of-8-1-5mm.html) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/gemfan-1608-40mm-3-blade/index.json

- gemfan-1608-40mm-3-blade-swept-disc: [STEP](https://xemstudio.com/files/hardware/gemfan-1608-40mm-3-blade/gemfan-1608-40mm-3-blade-swept-disc.step) · [STL](https://xemstudio.com/files/hardware/gemfan-1608-40mm-3-blade/gemfan-1608-40mm-3-blade-swept-disc.stl) — Swept disc Ø40 mm × 5 mm hub thickness, Ø1.5 mm bore — blades not modelled

## Questions

**What shaft does the Gemfan 1608 40 mm 3-blade propeller (1.5 mm) fit?**

Bore/mount: 1.5 mm hub ID; hub thickness 5 mm.

## Fits with

- [FPV drone motor sizes: 1104 to 3115, shaft, prop thread and mount patterns](https://xemstudio.com/objects/fpv-drone-motors/)
- [APC 8x4E electric propeller](https://xemstudio.com/objects/apc-8x4e-propeller/)
- [APC 8x6E electric propeller](https://xemstudio.com/objects/apc-8x6e-propeller/)
- [APC 9x4.5E electric propeller](https://xemstudio.com/objects/apc-9x4-5e-propeller/)
- [APC 9x6E electric propeller](https://xemstudio.com/objects/apc-9x6e-propeller/)