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

Name: Broom, mop, shovel and rake handle sizes and the 3/4-5 Acme broom / paint-pole thread dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What size thread is on a broom handle? · Standard part · basis: Handle makers' and retailers' spec tabs (diameters, lengths); thread from makers who measured about 20 handles

Also called: broom handle thread size, mop handle thread, paint pole thread, shovel handle diameter, rake handle size, broom handle adapter

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

sizes: 8 in table

Notes

Threaded broom, mop, squeegee and paint-pole handles use a 3/4-5 Acme-style thread (5 threads per inch, 5.08 mm pitch); there is no formal standard, so print slightly under (crest 18.0, root 13.0) and it bites into loose handles.
Handle diameters seen: 1 in (25.4) aluminium broom handles and angle brooms, 3/4 in (19.05) lobby brooms, 1-1/8 in (28.6) older tapered wood tool handles, 15/16 in (23.8) replacements; lengths 38, 48, 54, 60 in.
D-grips, fiberglass handle diameters and shovel/rake/hoe handle diameters are not published by the makers: a measured Xem scan is planned (calipers on your own handle work too).
Adapters (free STL): thread on top, socket below for your handle, a cross pin through the socket; print upright, 100 % infill on the threaded part.

Broom, mop, shovel and rake handle sizes and the 3/4-5 Acme broom /… size chart

item	inch	mm
broom thread (3/4-5 Acme), crest	0.71	18.0
broom thread, root	0.51	13.0
thread pitch	5 TPI	5.08
aluminium broom handle	1	25.4
lobby broom handle	3/4	19.05
tapered wood tool handle (old)	1-1/8	28.6
tapered wood tool handle (replacement)	15/16	23.8
handle lengths	38 / 48 / 54 / 60	965 / 1219 / 1372 / 1524

Where the files are

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

Autodesk forum (maker measurement of ~20 handles)	US paint / broom stick thread	web	Publisher's page; dimensions are facts
softsolder.com (maker measurement)	Broom handle screw thread replacement plug	web	Publisher's page; dimensions are facts
WebstaurantStore (spec tab)	Carlisle 60 in threaded aluminium broom handle, 1 in	web	Publisher's page; dimensions are facts
Lalema (spec tab)	Tapered wood handle 54 in	web	Publisher's page; dimensions are facts
Zoro (spec tab)	Libman broom handles	web	Publisher's page; dimensions are facts

Free files

★ Free files 4 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

acme-3-4-5-plug	3/4-5 Acme thread plug (crest 18.0, root 13.0, 20 long): replacement threaded tip	STEP · STL
acme-3-4-5-to-25.4-socket	Adapter: 3/4-5 Acme thread to a Ø25.4 (1 in) handle socket, Ø4.4 cross pin hole	STEP · STL
acme-3-4-5-to-28.6-socket	Adapter: 3/4-5 Acme thread to a Ø28.6 (1-1/8 in) handle socket	STEP · STL
acme-3-4-5-to-23.8-socket	Adapter: 3/4-5 Acme thread to a Ø23.8 (15/16 in) handle socket	STEP · STL

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=broom-and-tool-handles