Shelf support pins for 5 mm holes (32 mm system), plain and L-ledge — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/shelf-pins-5mm/  (CC BY 4.0)
Basis: 32 mm system 5 mm holes; Häfele 5 mm shelf supports; BILLY pitch from owner reports
Catalog version: 2026-10-20

Sizes: see table below
- 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.

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

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Häfele: Shelf supports for 5 mm holes — web — Publisher's page; dimensions are facts — https://files.hafele.co.uk/CatalogFiles/www/23T7-146.pdf
- Hausbau-Forum (owner report): BILLY: 5 mm holes, 32 mm pitch — web — Publisher's page; dimensions are facts — https://www.hausbau-forum.de/en/threads/billy-ikea-shelf-board-pencils-for-shelf-boards-wanted.23480

Free files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/shelf-pins-5mm/index.json
API: https://xemstudio.com/api/geometry?object=shelf-pins-5mm