DIN EN 16983

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Dimensions in mm - DIN EN 16983 Publication date: 09/2017 The DIN EN 16983 specification classifies disc springs into 3 groups: GROUP 1: under 1.25 mm thick (cold formed,radiused edges, iwthout bearing flats) GROUP 2: 1.25 mm thickup to and including 6mm (cold formed,machined,radiused edges, iwthout bearing flats) GROUP 3: above 6mm thick (fully machined from forged blanks, with bearing flats and thickness reduced)
Type	d2 max=nom size (h12)	d1 min= nom size (H12)	t thickness	t1	h1 cone height	h overall height	group
-	6	3.2	0.3	-	0.15	0.45	-
C	8	4.2	0.2	-	0.25	0.45
B	8	4.2	0.3	-	0.25	0.55	1
A	8	4.2	0.4	-	0.2	0.6	1
C	10	5.2	0.25	-	0.3	0.55	1
B	10	5.2	0.4	-	0.3	0.7	1
A	10	5.2	0.5	-	0.25	0.75	1
C	12.5	6.2	0.35	-	0.45	0.8	1
B	12.5	6.2	0.5	-	0.35	0.85	1
A	12.5	6.2	0.7	-	0.3	1	1
C	14	7.2	0.35	-	0.45	0.8	1
B	14	7.2	0.5	-	0.4	0.9	1
A	14	7.2	0.8	-	0.3	1.1	1
C	16	8.2	0.4	-	0.55	0.9	1
B	16	8.2	0.6	-	0.45	1.05	1
A	16	8.2	0.9	-	0.45	1.25	1
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Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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Standard DIN EN 16983