Camlock (cam and groove) couplings: types A, B, C, D, E, F, DC, DP, 1/2 to 4 in sizes, adapter flange diameter — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/camlock-couplings/ (sheet CC BY 4.0) Basis: A-A-59326D Table II (flange diameter B), Genebre datasheets 0440 / 0460 / 0470 (cross-check), Pathel catalogue (type definitions); numbers only Catalog version: 2026-10-20 Sizes: see table below - Cam and groove (camlock) couplings are specified in the US by Commercial Item Description A-A-59326D (supersedes MIL-C-27487); it numbers 22 coupling types with Roman numerals. The trade letters used on catalogs and here are: A adapter x female thread, B adapter x male thread, C coupler x hose shank, D coupler x female thread, E adapter x hose shank, F coupler x male thread, DC dust cap (fits a coupler), DP dust plug (fits an adapter). - Adapter (male half) flange diameter is printed in A-A-59326D Table II as dimension B (equal to H); Genebre's datasheet D for the same sizes agrees within 0.3 mm for 3/4 to 4 in, so the number is cross-checked by two sources. The standard's 1/2 in half uses the same body as 3/4 in (1.264 in); Genebre's 1/2 in is a smaller 23.8 mm body. - Threads are NPT unless a spec sheet says otherwise (A-A-59326D); the European range (Pathel) is BSPP for A and D, BSPT for B and F: the thread letter is not the coupling. - Left out, no file: the groove profile of the adapter. Table II lists letters A to K (for 1-1/2 in: A 1.690, B 2.105, C .441, D .13, E .690, F 1.62, J .13, K .58 in), but the figure that says which letter is groove diameter, groove width or lip radius could not be read, so Xem does not publish a revolved adapter. Overall length depends on the type and the hose shank/thread: Genebre's L is listed for E, DC and DP only. - Dust cap and plug have the same flange diameter as the adapter; cap/plug lengths are Genebre's L. size (in) adapter flange dia B (A-A-59326D) flange dia D (Genebre, mm) agree type E adapter length L (mm) type E shank bore d (mm) type DC cap length L (mm) type DP plug length L (mm) 1/2 1.264 in (32.11 mm) 23.8 no: Genebre 1/2 in is a smaller body 73 12 37 35 3/4 1.264 in (32.11 mm) 32.0 yes (within 0.3 mm) 88 19 44 38 1 1.446 in (36.73 mm) 36.7 yes (within 0.3 mm) 97 25 50 43 1-1/4 1.792 in (45.52 mm) 45.5 yes (within 0.3 mm) 113 31 59 55 1-1/2 2.105 in (53.47 mm) 53.5 yes (within 0.3 mm) 118 38 59 55 2 2.484 in (63.09 mm) 63.0 yes (within 0.3 mm) 136 51 66 62 2-1/2 2.985 in (75.82 mm) 75.8 yes (within 0.3 mm) 140 65 66 62 3 3.604 in (91.54 mm) 91.5 yes (within 0.3 mm) 153 76 71 62 4 4.708 in (119.58 mm) 119.5 yes (within 0.3 mm) 162 100 75 65 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - US DoD / GSA via EverySpec: A-A-59326D Coupling halves, quick-disconnect, cam-locking (Commercial Item Description, 2011) — web — US Government work — https://everyspec.com/COMML_ITEM_DESC/A-A-59000_A-A-59999/A-A-59326D_37598/ - Genebre: Camlock type E coupling, ref 0440 (D, L, d) — web — Publisher's page; dimensions are facts — https://www.mecafluid.eu/assets/d4ff7275-b858-4b65-a237-f3f31ad5ac46/698511-0440.pdf - Genebre: Camlock type DC coupling, ref 0460 (D, L) — web — Publisher's page; dimensions are facts — https://pim.genebre.es/genebre/documents/fichas_tecnicas/0460.pdf - Genebre: Camlock type DP coupling, ref 0470 (D, L) — web — Publisher's page; dimensions are facts — https://www.mecafluid.eu/assets/044cc84b-56ea-436a-be24-0831d4f9405c/698541-0470.pdf - Pathel: Camlock catalogue 2021 (types, threads) — web — Publisher's page; dimensions are facts — https://www.pathel.com/wp-content/uploads/2018/06/Camlock-catalogue-Pathel-2021.pdf 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=camlock-couplings