9 mm External Retaining Ring (Shaft Circlip), DIN 471

The 9 mm external retaining ring (DIN 471) fits a 9 mm shaft with a groove diameter of 8.6 mm, and is 1 mm thick. Here as simplified STEP files.

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

• Also searched as: 9 mm circlip
• Model id: din471-d9
• Standard: DIN 471:2011 · size 9 mm

Files

Part key	Simplified
din471-d9	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
s	Ring thickness		1		1	nominal	L1
s_lim	Ring thickness, limits	0.94		1	0.97	midpoint of min–max	L0 (max: one source)
d3	Free diameter		8.4		8.4	nominal	L1
d3_lim	Free diameter, limits	8.22		8.46	8.34	midpoint of min–max	L1
a	Lug height			3.3	3.3	single limit (max), modeled at the limit	L1
b	Radial width		1.7 ref		1.7	reference value	L1
d5	Plier hole diameter	1.2			1.2	single limit (min), modeled at the limit	L1
d2	Groove diameter		8.6		8.6	nominal	L1
m	Groove width		1.1		1.1	nominal	L1
n	Groove edge margin	0.6			0.6	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-DIN471-SZ-9.pdf.

The 9 mm external retaining ring beside the 8 mm and the 10 mm

The 9 mm is number 7, counting from the smallest, of the 18 DIN 471 external retaining rings published here, from 3 mm to 20 mm.

• Ring thickness (s): 1 mm on the 9 mm external retaining ring, against 0.8 mm on the 8 mm and 1 mm on the 10 mm.
• Ring thickness, limits (s_lim): 0.94 to 1 mm on the 9 mm external retaining ring, against 0.75 to 0.8 mm on the 8 mm and 0.94 to 1 mm on the 10 mm.
• Free diameter (d3): 8.4 mm on the 9 mm external retaining ring, against 7.4 mm on the 8 mm and 9.3 mm on the 10 mm.
• Free diameter, limits (d3_lim): 8.22 to 8.46 mm on the 9 mm external retaining ring, against 7.22 to 7.46 mm on the 8 mm and 8.94 to 9.4 mm on the 10 mm.
• Lug height (a): up to 3.3 mm on the 9 mm external retaining ring, against up to 3.2 mm on the 8 mm and up to 3.3 mm on the 10 mm.
• Radial width (b): 1.7 mm (reference) on the 9 mm external retaining ring, against 1.5 mm (reference) on the 8 mm and 1.8 mm (reference) on the 10 mm.
• Plier hole diameter (d5): at least 1.2 mm on the 9 mm external retaining ring, against at least 1.2 mm on the 8 mm and at least 1.5 mm on the 10 mm.
• Groove diameter (d2): 8.6 mm on the 9 mm external retaining ring, against 7.6 mm on the 8 mm and 9.6 mm on the 10 mm.

Other sizes

• One size smaller: 8 mm External Retaining Ring (Shaft Circlip), DIN 471, 8 mm shaft, 7.6 mm groove, 0.8 mm thick.
• One size larger: 10 mm External Retaining Ring (Shaft Circlip), DIN 471, 10 mm shaft, 9.6 mm groove, 1 mm thick.

Documents

• CC-DIN471-DS-9.pdf: 9 datasheet: values with levels, sources
• CC-DIN471-SZ-9.pdf: 9 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

fasten-it-din471, fasteners-eu-din471, hc-maschinentechnik-din471, seeger-din471. Full citations: the method page and this size's datasheet.

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