Kärcher NT / WD hose sizes: DN 35, DN 40, DN 50 and the bayonet 1.0 / 2.0 fittings — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/karcher-nt-hose-sizes/  (sheet CC BY 4.0)
Basis: Kärcher international accessory pages (technical data tables)
Catalog version: 2026-10-20

Sizes: see table below
- Kärcher prints its hose size as a nominal width (DN, shown as 'ID 35' / 'ID 40' in the technical-data table) and does not print the hose's real inside or outside diameter, or the bayonet or clip dimensions. The only other figure is the shipping-size line of the bent hose: 2550 x 35 x 35 mm.
- Clip 1.0 / bayonet 1.0 fit machines made up to 2016; clip 2.0 / bayonet 2.0 fit machines from 2017 (Kärcher's footnotes). The two generations differ, but the pages give no sizes for either.
- Only the numbers each source prints are listed, in the source's own words for what they measure. 'Nominal family' is the maker's own size label; it is not a measurement. Hose 'ID / OD' is the hose body, 'cuff / connection' is the end fitting, 'tool or accessory port' is the other side of an adapter. Inch figures are as printed; the mm in brackets are 25.4 mm per inch. A taper is listed only where a source prints it, and none does. Xem does not make these parts; measure your own hose before you size an adapter.

item  nominal family  hose ID  hose OD  cuff / connection  tool or accessory port  taper  source
NT suction hose, DN 40, 2.5 m (97554750)  DN 40 (technical data: 'ID 40')  40 (nominal)  not published  bayonet 1.0 (machine side), clip 1.0 (accessory side); sizes not printed  not published  not published  maker page
NT suction hose with bend, DN 35, 2.5 m (97552630)  DN 35 ('ID 35')  35 (nominal)  not published  bayonet 1.0 and clip 1.0; dimensions 2550 x 35 x 35 mm  not published  not published  maker page
NT extension hose, DN 35, 2.5 m (69062370)  DN 35 ('ID 35')  35 (nominal)  not published  clip 1.0 one end, connecting adapter the other  not published  not published  maker page
Bayonet 1.0 connection  DN 35, 40, 50  35, 40, 50 nominal  not published  'the same across' DN 35, 40 and 50; dimensions not printed  not published  not published  maker page

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Kärcher (international accessory page): Suction hose, NT, DN 40, length 2.5 m, clip 1.0, bayonet 1.0 (technical data: ID 40; bayonet 1.0 the same for 35, 40, 50) — web — Publisher's page; dimensions are facts — https://www.kaercher.com/int/accessory/suction-hose-nt-dn-40-length-2-5-m-clip-1-0-bayonet-1-0-97554750.html
- Kärcher (international accessory page): Suction hose with bend, NT, DN 35, length 2.5 m, clip 1.0, bayonet 1.0 (ID 35; dimensions 2550 x 35 x 35 mm) — web — Publisher's page; dimensions are facts — https://www.kaercher.com/int/accessory/suction-hose-with-bend-nt-dn-35-length-2-5-m-clip-1-0-bayonet-1-0-97552630.html
- Kärcher (international accessory page): Extension hose, NT, DN 35, length 2.5 m, clip 1.0, connecting adapter (ID 35) — web — Publisher's page; dimensions are facts — https://www.kaercher.com/int/accessory/extension-hose-nt-dn-35-length-2-5-m-clip-1-0-connecting-adapter-69062370.html

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=karcher-nt-hose-sizes