DIN 2093 Disc Spring (Washer)

Disc spring washers are produced to two standards: the German DIN 2093 and the Russian GOST 3057-90. These products are considered equivalents, but they cannot be regarded as fully identical — there are differences in the size range. If you have doubts about choosing the right fastener, contact FLOK consultants.

The washer’s shape provides increased elasticity, which is why it is also known as a disc spring. It is used together with nuts, bolts and other threaded fasteners in industrial, manufacturing and construction applications.

The product withstands significant loads, including impulse loads. A fastening assembly with a disc spring washer does not loosen under dynamic loads, vibration and oscillation.

Materials and corrosion-resistant coatings of DIN 2093 disc spring washers

The main material for disc-shaped washers is steel alloy. First comes special spring steel with increased elasticity (E – 206000 N/mm²). Next are high-carbon alloys. Stainless chromium-nickel steels A2 and A4 are also used.

Austenitic steels do not need protection and are resistant to moisture and aggressive media. Spring steel and carbon steel, on the contrary, rust on contact with water. Therefore, disc spring washers are treated with zinc in electroplating chambers, by oxidizing or by the thermal diffusion method. Phosphating and chrome plating are also used.

Types of DIN 2093 disc spring washers

The product type is determined by the thickness parameter. In addition to classification by outer and inner diameter, products are divided by thickness into three groups: reinforced “form A”, standard “form B” and lightweight “form C”.

Depending on installation and operating conditions, the fasteners are installed as a single unit or stacked into a pack. In this case an elastic assembly is formed, capable of withstanding high compressive loads. The result is affected by the thickness of each element and the arrangement of the several springs relative to one another.

When DIN 2093 disc spring washers are used in a stack, different assembly configurations are applied: series, parallel and series-parallel. In the series configuration, springs of different thicknesses may be used.

How to buy DIN 2093 or GOST 3057-90 disc spring washers

FLOK supplies certified fasteners and hardware, including disc spring washers across the full size range.

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Materials:

• Steel: spring steel
• Coated steel: mechanical zinc plating
• Stainless steel: A2, A4
• Non-ferrous metals, alloys, plastic: bronze.

Dimensions of DIN 2093 disc spring (washer) in mm:

Di	De	lo	t	Series
3.2	6	0.45	0.3
3.2	8	0.7	0.5
4.2	8	0.55	0.3	B
4.2	8	0.60	0.4	A
4.2	12	0.85	0.5
5.2	10	0.55	0.25	C
5.2	10	0.70	0.4	B
5.2	10	0.75	0.5	A
6.2	12.5	0.85	0.5	B
6.2	12.5	1.00	0.7	A
7.2	14	1.10	0.8	A
8.2	15	1.20	0.8
8.2	16	0.90	0.4	C
8.2	16	1.05	0.6	B
8.2	16	1.25	0.9	A
8.2	20	1.35	0.7
9.2	18	1.20	0.7	B
9.2	18	1.40	1	A
10.2	20	1.35	0.8	B
10.2	20	1.55	1	A
10.2	20	1.55	1.1	A
12.2	25	1.60	0.9	B
12.2	25	2.05	1.5	A
14.2	28	1.80	1	B
14.2	28	2.15	1.5	A
16.3	31.5	1.85	0.8	C
16.3	31.5	2.15	1.25	B
16.3	31.5	2.45	1.75	A
18.3	35.5	2.25	1.25	B