Square washers for timber, DIN 436: M10–M36 side length, hole, thickness — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/square-washers-din-436/  (sheet CC BY 4.0)
Basis: Westfield Fasteners' DIN 436 table (d, a, s), cross-checked against fasten.it and spot checks of Kramp, Würth, Cromwell, SWG and Keller & Kalmbach listings
Catalog version: 2026-10-20

Sizes: see table below
- Columns: thread, hole d, side length a, thickness s. Values are from the 1990 edition; the 2024 revision is paywalled and was not checked.
- Edges drawn sharp.

thread  d  a  s
M10  11  30  3
M12  13.5  40  4
M16  17.5  50  5
M20  22  60  5
M22  24  70  6
M24  26  80  6
M27  30  90  6
M30  33  95  6
M33  36  100  6
M36  39  110  8

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Westfield Fasteners: DIN 436 square plate flat washers: d1, a, h — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/Washer-SqPlate-M.html
- fasten.it: DIN 436 square washers for wood constructions (05/1990) — web — Publisher's page; dimensions are facts — https://fasten.it/en/norms/norm/din_436

Free files (CC BY 4.0, Xem Studio; STEP + STL, 10 parts): https://xemstudio.com/files/hardware/square-washers-din-436/index.json
API: https://xemstudio.com/api/geometry?object=square-washers-din-436