20 mm Shaft Collar (Set Collar), Form A (Set-screw Hole), DIN 705

For a 20 mm shaft, this 20 mm shaft collar (DIN 705, form A, set-screw hole) is 32 mm outside and 14 mm wide, held by an M6 set-screw hole. Modeled as simplified and threaded STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 20 mm collar
• Model id: din705-a-d20
• Standard: DIN 705:2019 · size 20 mm

Files

Part key	Simplified	Threaded
din705-a-d20	STEP	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Bore diameter		20		20	nominal	L1
d2	Outside diameter		32		32	nominal	L1
b	Width		14		14	nominal	L1
d3	Set-screw thread		6		6	nominal	L1
l_s	Set-screw length		8		8	nominal	L1

Drawing

As a PDF: CC-DIN705-SZ-20.pdf.

The 20 mm form A shaft collar beside the 18 mm

The 20 mm is the largest of the 11 DIN 705 shaft collars published here, from 3 mm to 20 mm.

• Bore diameter (d1): 20 mm on the 20 mm form A shaft collar, against 18 mm on the 18 mm.
• Outside diameter (d2): 32 mm on the 20 mm form A shaft collar, the same on the 18 mm.
• Width (b): 14 mm on the 20 mm form A shaft collar, the same on the 18 mm.
• Set-screw thread (d3): 6 mm on the 20 mm form A shaft collar, the same on the 18 mm.
• Set-screw length (l_s): 8 mm on the 20 mm form A shaft collar, the same on the 18 mm.

The 20 mm form A shaft collar in its other forms

• 20 mm Shaft Collar (Set Collar), Form B (Taper-pin Hole), DIN 705: taper-pin diameter 5 mm, no set-screw thread (d3) or set-screw length (l_s).

Other sizes

• One size smaller: 18 mm Shaft Collar (Set Collar), Form A (Set-screw Hole), DIN 705, 18 mm bore, 32 mm OD, 14 mm wide, M6 set screw.

Documents

• CC-DIN705-DS-20.pdf: 20 datasheet: values with levels, sources
• CC-DIN705-SZ-20.pdf: 20 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

dinmark-din705, fasten-it-din705, maedler-din705. Full citations: the method page and this size's datasheet.

Found an error? Use the feedback section on this page.