# Slot guide plate 90 × 30 × 5, 6.2 mm slot (74 long)

> What is a slot guide plate?

- Category: Hardware › Mechanism parts
- Kind: Modern device
- Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
- Page: https://xemstudio.com/objects/slot-guide-plate-90/ · JSON: https://xemstudio.com/api/geometry?object=slot-guide-plate-90 · Plain text: https://xemstudio.com/objects/slot-guide-plate-90/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 90.0 | 30.0 | 5.0 |

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

## Notes

- 90 × 30 × 5 plate with a 6.2 mm wide, 74 mm (end-to-end) round-ended slot: guides the 12 × 6.2 slide block on a straight line; four Ø3.4 (M3 clearance) corner holes.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| plate | 90 × 30 × 5 mm |
| slot | 6.2 × 74 mm |
| holes | 4 × Ø3.4 |

## Where the files are

- Henry T. Brown (1868, public domain): [Five Hundred and Seven Mechanical Movements — scan on archive.org](https://archive.org/details/fivehundredseven00browiala) — web — Publisher's page; dimensions are facts
- 507movements.com: [Brown's movement No. 339: figure, his text and an animation](https://507movements.com/mm_339.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/scott-russell-straight-line-mechanism/) — web — Publisher's page; dimensions are facts

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

Index: https://xemstudio.com/files/hardware/slot-guide-plate-90/index.json

- slot-guide-plate-90: [STEP](https://xemstudio.com/files/hardware/slot-guide-plate-90/slot-guide-plate-90.step) · [STL](https://xemstudio.com/files/hardware/slot-guide-plate-90/slot-guide-plate-90.stl) — plate, z −2.5..2.5, slot along X

## Questions

**What is a slot guide plate?**

90 × 30 × 5 plate with a 6.2 mm wide, 74 mm (end-to-end) round-ended slot: guides the 12 × 6.2 slide block on a straight line; four Ø3.4 (M3 clearance) corner holes.

## Fits with

- [Scott Russell straight-line linkage (half-scissor)](https://xemstudio.com/objects/scott-russell-straight-line-mechanism/)