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

For a 4 mm shaft, this 4 mm shaft collar (DIN 705, form A, set-screw hole) is 8 mm outside and 5 mm wide, held by an M2.5 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: 4 mm collar
• Model id: din705-a-d4
• Standard: DIN 705:2019 · size 4 mm

Files

Part key	Simplified	Threaded
din705-a-d4	STEP	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Bore diameter		4		4	nominal	L1
d2	Outside diameter		8		8	nominal	L1
b	Width		5		5	nominal	L1
d3	Set-screw thread		2.5		2.5	nominal	L1
l_s	Set-screw length		3		3	nominal	L1

Drawing

As a PDF: CC-DIN705-SZ-4.pdf.

The 4 mm form A shaft collar beside the 3 mm and the 5 mm

The 4 mm is number 2, counting from the smallest, of the 11 DIN 705 shaft collars published here, from 3 mm to 20 mm.

• Bore diameter (d1): 4 mm on the 4 mm form A shaft collar, against 3 mm on the 3 mm and 5 mm on the 5 mm.
• Outside diameter (d2): 8 mm on the 4 mm form A shaft collar, against 7 mm on the 3 mm and 10 mm on the 5 mm.
• Width (b): 5 mm on the 4 mm form A shaft collar, against 5 mm on the 3 mm and 6 mm on the 5 mm.
• Set-screw thread (d3): 2.5 mm on the 4 mm form A shaft collar, against 2 mm on the 3 mm and 3 mm on the 5 mm.
• Set-screw length (l_s): 3 mm on the 4 mm form A shaft collar, against 3 mm on the 3 mm and 4 mm on the 5 mm.

The 4 mm form A shaft collar in its other forms

• 4 mm Shaft Collar (Set Collar), Form B (Taper-pin Hole), DIN 705: taper-pin diameter 1 mm, no set-screw thread (d3) or set-screw length (l_s).

Other sizes

• One size smaller: 3 mm Shaft Collar (Set Collar), Form A (Set-screw Hole), DIN 705, 3 mm bore, 7 mm OD, 5 mm wide, M2 set screw.
• One size larger: 5 mm Shaft Collar (Set Collar), Form A (Set-screw Hole), DIN 705, 5 mm bore, 10 mm OD, 6 mm wide, M3 set screw.

Documents

• CC-DIN705-DS-4.pdf: 4 datasheet: values with levels, sources
• CC-DIN705-SZ-4.pdf: 4 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.

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