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Garden hose thread (GHT 3/4-11.5 NH) dimensions, hose sizes, BSP G3/4 and Gardena for comparison

What thread is a garden hose? · Standard part · basis: ASME B1.20.7 table (Machinery's Handbook), Dixon fitting guide; ISO 228 for BSP; Gardena product pages

Also called: garden hose thread size, ght thread, 3/4 ght dimensions, hose adapter 3d print, garden hose fitting size

Exact dimensions. True size, with no printing tolerance added.

sizes
3 in table

Notes

  • US garden hose: 3/4-11.5 NH (GHT): 11.5 threads per inch (2.209 mm pitch). Male nipple major Ø26.56–26.99, pitch Ø25.34–25.55, minor ≤24.12 mm. Female coupling major ≥27.24, minor 24.37–24.80.
  • It is NOT pipe thread: 3/4 in NPT (14 TPI, tapered) and BSP G3/4 (14 TPI, Ø26.44 major) look close and cross-thread; GHT seals on the washer, not the threads.
  • Hose sizes are inside diameters: 1/2, 5/8 (a Flexzilla 5/8 is 15.7 mm ID), 3/4 in; ODs are not published.
  • Europe: taps are G3/4 (Gardena '26.5 mm'), G5/8 ('23 mm') and G1/2 ('21 mm'); Gardena click-coupling geometry is not published.
  • Printed GHT parts (free STL): male thread drawn slightly under (major 26.6, minor 24.1) so it threads into real couplings; use the rubber washer to seal, PETG or ASA outdoors.

Garden hose thread (GHT 3/4-11.5 NH) dimensions, hose sizes, BSP… size chart

threadTPIpitch (mm)major (mm)minor (mm)
GHT 3/4-11.5 NH male11.52.20926.56–26.99≤24.12
GHT female coupling11.52.209≥27.2424.37–24.80
BSP G3/4 (ISO 228)141.81426.44124.117

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Machinery's Handbook (ASME B1.20.7 table)Hose coupling screw threadswebPublisher's page; dimensions are facts
Dixon ValveThread identification guidewebPublisher's page; dimensions are facts
PRESSOLWhitworth pipe thread ISO 228 (G3/4)webPublisher's page; dimensions are facts
GardenaTap connector thread sizeswebPublisher's page; dimensions are facts
Alaska Rubber Group (spec)Flexzilla 5/8 in hosewebPublisher's page; dimensions are facts

Free files

★ Free files 3 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

ght-male-nipple-12mm3/4-11.5 GHT male nipple, 12 mm of thread, hex grip, Ø13 boreSTEP · STL
ght-male-to-13mm-tube3/4-11.5 GHT male to a Ø13 socket (1/2 in tubing / drip line)STEP · STL
ght-male-to-16mm-tube3/4-11.5 GHT male to a Ø16 socket (5/8 in hose barb sleeve)STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=garden-hose-thread

Garden hose thread (GHT 3/4-11.5 NH) dimensions, hose sizes, BSP G3/4 and Gardena for comparison, isometric render of a generated part
Render of ght-male-to-13mm-tube from the free STEP; not to scale.

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Broom, mop, shovel and rake handle sizes and the 3/4-5 Acme broom / paint-pole thread8 sizes★ 4 files

Questions

What size thread is a garden hose?

3/4-11.5 NH (GHT): 11.5 threads per inch, about 26.8 mm across the male thread. It is not 3/4 NPT.