# Shelf support pins for 5 mm holes (32 mm system), plain and L-ledge

> What size shelf pins fit IKEA BILLY?

- Category: Hardware › Furniture hardware
- Kind: Hardware
- Basis: 32 mm system 5 mm holes; Häfele 5 mm shelf supports; BILLY pitch from owner reports
- Page: https://xemstudio.com/objects/shelf-pins-5mm/ · JSON: https://xemstudio.com/api/geometry?object=shelf-pins-5mm · Plain text: https://xemstudio.com/objects/shelf-pins-5mm/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/)

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

## Notes

- 5 mm holes on a 32 mm vertical pitch are the cabinet-industry standard and what BILLY owners report.
- Print pins standing up for round pins; the L-ledge prints on its side.

## Sizes

| pin | dia_mm | length_mm |
|---|---|---|
| plain | 5 | 16 |
| plain | 5 | 20 |
| L-ledge | 5 | 8 |
| small-hole variant | 3.2 | 16 |

## Where the files are

- Häfele: [Shelf supports for 5 mm holes](https://files.hafele.co.uk/CatalogFiles/www/23T7-146.pdf) — web — Publisher's page; dimensions are facts
- Hausbau-Forum (owner report): [BILLY: 5 mm holes, 32 mm pitch](https://www.hausbau-forum.de/en/threads/billy-ikea-shelf-board-pencils-for-shelf-boards-wanted.23480) — web — Publisher's page; dimensions are facts

## Free STEP/STL (4 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/shelf-pins-5mm/index.json

- shelf-pin-5x16-plain: [STEP](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-5x16-plain.step) · [STL](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-5x16-plain.stl) — Plain Ø5 × 16 mm shelf pin (8 in the hole, 8 under the shelf)
- shelf-pin-5x20-plain: [STEP](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-5x20-plain.step) · [STL](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-5x20-plain.stl) — Plain Ø5 × 20 mm shelf pin
- shelf-pin-5-l-ledge: [STEP](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-5-l-ledge.step) · [STL](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-5-l-ledge.stl) — Ø5 pin with a 10 × 12 ledge (prints on its side; the shelf rests on the ledge)
- shelf-pin-3-plain: [STEP](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-3-plain.step) · [STL](https://xemstudio.com/files/hardware/shelf-pins-5mm/shelf-pin-3-plain.stl) — Ø3.2 × 16 pin for the small-hole bookcase variant

## Questions

**What size are BILLY shelf pins?**

Ø5 mm, in holes on a 32 mm pitch.

## Fits with

- [IKEA BILLY bookcase dimensions (80 and 40 wide, 202 and 106 tall) and shelf sizes](https://xemstudio.com/objects/ikea-billy/)
- [IKEA IVAR shelving dimensions (side units and shelves)](https://xemstudio.com/objects/ikea-ivar/)
- [Furniture dowels Ø6, Ø8, Ø10 × 30–40 mm (the 8 × 30 flat-pack dowel)](https://xemstudio.com/objects/furniture-dowels/)