Square keys, inch (ANSI B17.1): 3/32 to 1/2 in — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/square-keys-inch/  (CC BY 4.0)
Basis: ANSI B17.1 keys and keyseats: square key size by shaft diameter; keyseat depth k/2
Catalog version: 2026-10-20

Sizes: see table below
- Square ends (bar stock keys).

shaft_in  key_in  lengths_in
0.3125–0.4375  0.0938  0.75, 1, 1.5, 2, 3
0.4375–0.5625  0.125  0.75, 1, 1.5, 2, 3
0.5625–0.875  0.1875  0.75, 1, 1.5, 2, 3
0.875–1.25  0.25  0.75, 1, 1.5, 2, 3
1.25–1.375  0.3125  0.75, 1, 1.5, 2, 3
1.375–1.75  0.375  0.75, 1, 1.5, 2, 3
1.75–2.25  0.5  0.75, 1, 1.5, 2, 3

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ASME: ANSI B17.1 Keys and keyseats — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/b17-1-keys-keyseats

Free files (CC BY 4.0, Xem Studio; STEP + STL, 35 parts): https://xemstudio.com/files/hardware/square-keys-inch/index.json
API: https://xemstudio.com/api/geometry?object=square-keys-inch