Disc Spring Washers

Standard	DIN 2093
Material	50CrV4
Strength Grade	—
Size Range	M5-M30
Surface Treatment	Phosphate

Product Description

Product Description & Key Specifications

Disc spring washers, also called Belleville washers, are conical spring elements used to maintain preload, compensate settlement and provide elastic force in compact bolted joints. This range is supplied in 50CrV4 to DIN 2093 with phosphate finish and M5-M30 size coverage.

Disc springs are different from ordinary split spring washers. They are selected by load-deflection behavior, outside diameter, inside diameter, thickness, free height, stacking arrangement and working deflection. They can be used singly or stacked in series/parallel to achieve a required spring force curve.

Applications include railway equipment, machinery joints, flange bolting, clamping fixtures, power equipment and vibration-loaded assemblies. RFQs should confirm DIN 2093 group, size, load requirement, stack arrangement, phosphate finish and any fatigue or load testing requirements.

Product type	Disc spring washers / Belleville washers
Standards	DIN 2093
Material	50CrV4 spring steel
Strength grade	Spring washer by load-deflection requirement
Size range	M5-M30
Common models	M5, M6, M8, M10, M12, M16, M20, M24, M30
Washer form	Conical disc spring, single or stacked arrangement
Surface finish	Phosphate
Matched hardware	High-strength bolts, stud bolts, nuts and flange assemblies
Documentation	CoC, material certificate, dimensional report and load test report on request

Dimensions & SpecificationsDIN 2093

Technical Drawing

Dimensional Table

Parameter	Φ8	Φ10	Φ12.5	Φ14	Φ16	Φ18	Φ20	Φ22.5	Φ25	Φ28	Φ31.5	Φ35.5	Φ40	Φ45	Φ50	Φ56	Φ63	Φ71	Φ80	Φ90	Φ100	Φ112	Φ125	Φ140	Φ160	Φ180	Φ200	Φ225	Φ250
dc/max	8	10	12.5	14	16	18	20	22.5	25	28	31.5	35.5	40	45	50	56	63	71	80	90	100	112	125	140	160	180	200	225	250
dc/min	7.85	9.85	12.32	13.82	15.82	17.82	19.79	22.29	24.79	27.79	31.25	35.25	39.75	44.75	49.75	55.7	62.7	70.7	79.7	89.65	99.65	111.65	124.6	139.6	159.6	179.6	199.54	224.54	249.54
d/max	4.32	5.32	6.35	7.35	8.35	9.35	10.38	11.38	12.38	14.38	16.48	18.51	20.61	22.61	25.61	28.71	31.25	36.25	41.25	46.25	51.3	57.3	64.3	72.3	82.35	92.35	102.35	112.35	127.4
d/min	4.2	5.2	6.2	7.2	8.2	9.2	10.2	11.2	12.2	14.2	16.3	18.3	20.4	22.4	25.4	28.5	31	36	41	46	51	57	64	72	82	92	102	112	127
h/max	0.42	0.52	0.73	0.86	0.96	1.03	1.13	1.29	1.58	1.58	1.79	2.04	2.29	2.58	3.04	3.04	3.58	4.05	5.05	5.05	6.05	6.05	8.1	8.1	10.1	10.1	12.1	12.1	14.1
h/min	0.39	0.49	0.61	0.74	0.84	0.91	1.01	1.13	1.42	1.42	1.63	1.88	2.13	2.42	2.88	2.88	3.42	3.85	4.85	4.85	5.85	5.85	7.9	7.9	9.9	9.9	11.9	11.9	13.9
H/max	0.7	0.85	1.1	1.2	1.4	1.55	1.7	1.9	2.25	2.35	2.65	3	3.45	3.8	4.4	4.6	5.2	5.9	7	7.3	8.5	8.8	10.9	11.5	13.8	14.3	16.5	17.3	19.9
H/min	0.55	0.7	0.95	1.05	1.17	1.32	1.47	1.67	1.95	2.05	2.35	2.7	3	3.35	3.95	4.15	4.75	5.45	6.4	6.7	7.9	8.2	10.3	10.9	13.2	13.7	15.9	16.7	19.3

Engineering references

Technical resources

Review the applicable dimensions, drawing and standard relationship before confirming the ordered specification.

Dimensions and drawingCustom & Non-Standard DIN 2093 Disc springsOpen drawing →Standard cross-referenceDIN 2093 vs JIS B2706: equivalents and replacement guideOpen cross-reference →

Selection

Selection Advantages by Application

Railway Equipment and Vibration Joints

DIN 2093 disc springs are used in railway equipment and vibration-sensitive joints where preload retention and elastic compensation are required.

Railway fasteners

Machinery Clamping and Fixtures

Disc spring stacks provide controlled spring force in fixtures, clutches, brakes, machinery covers and equipment clamping systems.

Industrial equipment fasteners

Stud Bolting and Flange Assemblies

Disc springs can compensate settlement and thermal movement in selected stud bolting applications when the stack design is approved by engineering.

Power generation fasteners

Assembly

Recommended Matching Products

Hex Head Bolts Partial ThreadBolt pairing for preload-sensitive machinery joints.

ASTM A193 B7 Stud BoltsStud bolt pairing where disc springs are specified for flange or equipment preload.

Hex NutsNut pairing for general disc spring washer assemblies.

All Metal Prevailing Torque NutsLocking nut option for heat or vibration-loaded assemblies.

Wedge Lock WashersAnti-loosening washer alternative where wedge-locking is specified instead of spring force.

Manufacturing

Manufacturing & Quality Control

Manufacturing CapabilityQuality Control

Stamping and forming of 50CrV4 conical spring washersMaterial grade and strip thickness verification

Heat treatment for spring performanceHardness, free height and load-deflection inspection

DIN 2093 dimensional production and stacking supportID, OD, thickness, cone height and surface inspection

Phosphate finish for spring washer surface conditionCoating appearance and corrosion protection review

Packaging by size, stack set or project requirementCoC, dimensional and load test reports prepared on request

FAQ

Common Questions Before RFQ

Are disc spring washers the same as spring washers?

No. Disc springs are conical Belleville washers designed for defined load-deflection behavior, while split spring washers are general locking washers.

What material is used?

This range uses 50CrV4 spring steel, a common material for DIN 2093 disc springs.

Can disc springs be stacked?

Yes. They can be arranged in series or parallel stacks to adjust spring force and deflection.

What finish is available?

Phosphate finish is available for this product range.

What RFQ details are needed?

Send DIN 2093 size, load requirement, stack arrangement, quantity, finish and test report requirements.

Need DIN 2093 disc spring washers?

Send size, DIN group, load requirement, stack arrangement, quantity and test documentation needs. We can quote 50CrV4 phosphate disc springs for railway, machinery and bolted joint preload applications.

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