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

The 19 mm external retaining ring (DIN 471) fits a 19 mm shaft with a groove diameter of 18 mm, and is 1.2 mm thick. Here as simplified STEP files.

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

• Also searched as: 19 mm circlip
• Model id: din471-d19
• Standard: DIN 471:2011 · size 19 mm

Files

Part key	Simplified
din471-d19	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
s	Ring thickness		1.2		1.2	nominal	L1
s_lim	Ring thickness, limits	1.14		1.2	1.17	midpoint of min–max	L0 (max: one source)
d3	Free diameter		17.5		17.5	nominal	L1
d3_lim	Free diameter, limits	17.14		17.6	17.37	midpoint of min–max	L1
a	Lug height			3.9	3.9	single limit (max), modeled at the limit	L1
b	Radial width		2.5 ref		2.5	reference value	L1
d5	Plier hole diameter	2			2	single limit (min), modeled at the limit	L1
d2	Groove diameter		18		18	nominal	L1
m	Groove width		1.3		1.3	nominal	L1
n	Groove edge margin	1.5			1.5	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-DIN471-SZ-19.pdf.

The 19 mm external retaining ring beside the 18 mm and the 20 mm

The 19 mm is number 17, counting from the smallest, of the 18 DIN 471 external retaining rings published here, from 3 mm to 20 mm.

• Ring thickness (s): 1.2 mm on the 19 mm external retaining ring, the same on the 18 mm and the 20 mm.
• Ring thickness, limits (s_lim): 1.14 to 1.2 mm on the 19 mm external retaining ring, the same on the 18 mm and the 20 mm.
• Free diameter (d3): 17.5 mm on the 19 mm external retaining ring, against 16.5 mm on the 18 mm and 18.5 mm on the 20 mm.
• Free diameter, limits (d3_lim): 17.14 to 17.6 mm on the 19 mm external retaining ring, against 16.14 to 16.6 mm on the 18 mm and 18.08 to 18.63 mm on the 20 mm.
• Lug height (a): up to 3.9 mm on the 19 mm external retaining ring, against up to 3.9 mm on the 18 mm and up to 4 mm on the 20 mm.
• Radial width (b): 2.5 mm (reference) on the 19 mm external retaining ring, against 2.4 mm (reference) on the 18 mm and 2.6 mm (reference) on the 20 mm.
• Plier hole diameter (d5): at least 2 mm on the 19 mm external retaining ring, the same on the 18 mm and the 20 mm.
• Groove diameter (d2): 18 mm on the 19 mm external retaining ring, against 17 mm on the 18 mm and 19 mm on the 20 mm.

Other sizes

• One size smaller: 18 mm External Retaining Ring (Shaft Circlip), DIN 471, 18 mm shaft, 17 mm groove, 1.2 mm thick.
• One size larger: 20 mm External Retaining Ring (Shaft Circlip), DIN 471, 20 mm shaft, 19 mm groove, 1.2 mm thick.

Documents

• CC-DIN471-DS-19.pdf: 19 datasheet: values with levels, sources
• CC-DIN471-SZ-19.pdf: 19 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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