# T8 flange nut: Ø10.2 body, Ø22 flange, 4 × Ø3.5 on 16

> What are the T8 lead screw nut flange dimensions?

- Category: Hardware › Motion
- Kind: Hardware
- Basis: Common catalogue T8 flange nut: Ø10.2 × 15 body, Ø22 × 3.5 flange, four Ø3.5 holes on a Ø16 circle
- Page: https://xemstudio.com/objects/t8-nut/ · JSON: https://xemstudio.com/api/geometry?object=t8-nut · Plain text: https://xemstudio.com/objects/t8-nut/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**Exact dimensions.** Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part.

## Notes

- A Ø10.2 body 15 long with a Ø22 × 3.5 flange at one end (flange face flush with the body end).
- Four Ø3.5 holes (M3) on a Ø16 pitch circle, at 45° to the axes.
- Bore drawn at Ø8 (thread not drawn). A mount takes the body at Ø10.2 and the flange at Ø22 (see Mating features).

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| nut body | Ø10.2 | mount bore | slide | t8-flange-nut* |
| nut flange holes | 4 × Ø3.5 on 16 PCD | M3 screws | designed | t8-flange-nut* |

## Sizes

| feature | value_mm |
|---|---|
| body | Ø10.2 × 15 |
| flange | Ø22 × 3.5 |
| holes | 4 × Ø3.5 on Ø16, 45° |
| bore | Ø8 (Tr8×8) |

## Where the files are

- Wikipedia: [Leadscrew](https://en.wikipedia.org/wiki/Leadscrew) — web — CC BY-SA 4.0 (text)
- McMaster-Carr: [Lead screws and nuts (free STEP/IGES/STL per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/lead-screws/) — STEP, IGES, STL, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

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

Index: https://xemstudio.com/files/hardware/t8-nut/index.json

- t8-flange-nut: [STEP](https://xemstudio.com/files/hardware/lead-screw-t8/t8-flange-nut.step) · [STL](https://xemstudio.com/files/hardware/lead-screw-t8/t8-flange-nut.stl) — T8 flange nut: Ø10.2 body, Ø22 flange 3.5 thick, 4 × Ø3.5 on 16 PCD, 15 long

## How it fits

### Connects to
- [T8 lead screw Tr8×8 envelope, 100 to 400 mm](https://xemstudio.com/objects/t8-lead-screw/): rides the Tr8×8 thread

### Also needed
- [Socket head cap screws, M2–M8 (ISO 4762 / DIN 912)](https://xemstudio.com/objects/socket-head-cap-screws-metric/): 4 × M3 through the flange

## Questions

**What is the T8 nut hole pattern?**

Four Ø3.5 holes (M3) on a Ø16 pitch circle at 45° to the axes; flange Ø22 × 3.5.

**What bore does a T8 nut mount need?**

Ø10.2 for the body, with the Ø22 flange on the face.

## Fits with

- [T8 lead screw Tr8×8 envelope, 100 to 400 mm](https://xemstudio.com/objects/t8-lead-screw/)
- [Socket head cap screws, M2–M8 (ISO 4762 / DIN 912)](https://xemstudio.com/objects/socket-head-cap-screws-metric/)
- [MGN9C/H, MGN12C/H and MGN15H carriages](https://xemstudio.com/objects/mgn-carriages/)