Washers for clamping fixtures, DIN 6340: M6–M30 bore, outside diameter, thickness — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/washers-clamping-fixtures-din-6340/  (sheet CC BY 4.0)
Basis: Halder and norelem DIN 6340 tables (d1, d2, h), cross-checked against Ganter, Würth, Kramp and AMF / Hoffmann; every row agrees in at least three sources
Catalog version: 2026-10-20

Sizes: see table below
- Columns: thread, bore d1, outside diameter d2, thickness h (edition 1987-04). Hardened and ground in practice.
- Manufacturers disagree on whether the edges are broken and none gives a size, so edges are drawn sharp.

thread  d1  d2  h
M6  6.4  17  3
M8  8.4  23  4
M10  10.5  28  4
M12  13  35  5
M16  17  45  6
M20  21  50  6
M24  25  60  8
M30  31  68  10

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Halder: Washers DIN 6340, EH 23060 — web — Publisher's page; dimensions are facts — https://halder.com/at/file-download/object_file_dsag_eh23060_1_de
- norelem (via Marek): Washers for clamping fixtures DIN 6340 (07320) — web — Publisher's page; dimensions are facts — https://www.marek.eu/en/norelem-clamping-technology-standard-elements-operating-parts/flexible-standard-component-system/fastening-elements/fasteners-connecting-elements/24904/washers-for-clamping-fixtures-steel-or-aluminium-din-6340.html
- Kramp: Washer M30 × 68 × 10 DIN 6340 — web — Publisher's page; dimensions are facts — https://kramp.com/shop-ro/en/p/washer-m30x68x10mm-steel-zinc-plated-din-6340-kramp--634030

Free files (CC BY 4.0, Xem Studio; STEP + STL, 8 parts): https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/index.json
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