T-slot nuts, DIN 508: M4–M22 for 5–24 mm T-slots, neck width, base, height — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/t-slot-nuts-din-508/  (sheet CC BY 4.0)
Basis: OPAC's DIN 508 table (slot, a, e, h, k), cross-checked against Halder's DIN 508 catalogue (EH 23010) and fasten.it's DIN 508 table (06/2002)
Catalog version: 2026-10-20

Sizes: see table below
- Columns: thread d, T-slot size (to DIN 650), neck width a (slot minus 0.4), base e (length and width), total height h, base height k. Halder lists the same a, e, h, k for every shared size (e.g. 14 mm slot: a 13.6, e 22, h 16, k 8).
- Files: square base plus a full-length neck, thread as a plain bore at the major diameter. Larger sizes (M24, M30) are in the standard but not drawn here.

thread  slot  a  e  h  k
M4  5  4.6  9  6.5  3
M5  6  5.6  10  8  4
M6  8  7.6  13  10  6
M8  10  9.6  15  12  6
M10  12  11.6  18  14  7
M12  14  13.6  22  16  8
M14  16  15.6  25  18  9
M16  18  17.6  28  20  10
M18  20  19.6  32  24  12
M20  22  21.6  35  28  14
M22  24  23.6  40  32  16

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- OPAC: DIN 508 nuts for T-slots: D, A, E, H, H1 — web — Publisher's page; dimensions are facts — https://www.opac.net/en/producto-4-din-508
- Halder (via MISUMI): Nuts for T-slots DIN 508, EH 23010: d, a, e, h, k — web — Publisher's page; dimensions are facts — https://tw.c.misumi-ec.com/book/RHL1_ENG_13_02_24/pdf/0657.pdf
- McMaster-Carr: T-slot nuts, DIN 508 metric listings — web — Publisher's page; dimensions are facts — https://www.mcmaster.com/tooling-component-t-slot-nuts

Free files (CC BY 4.0, Xem Studio; STEP + STL, 11 parts): https://xemstudio.com/files/hardware/t-slot-nuts-din-508/index.json
API: https://xemstudio.com/api/geometry?object=t-slot-nuts-din-508