Carbon Steel Spring Washer — Factory Direct Supplier | Huaxia-Steel

Huaxia-Steel produces industrial-grade carbon steel spring washers for anti-vibration fastening and bolt tension maintenance. Our spring washer range includes split lock washers, wave washers, disc spring washers, and tab washers conforming to DIN 127, DIN 7980, ASME B18.21.1, and custom specifications.

Fig 1

Product Overview

Spring washers — also called lock washers — provide spring tension that maintains bolt preload and resists loosening under vibration, thermal cycling, and dynamic loads. Carbon steel spring washers offer high elastic deflection, good fatigue life, and cost-effective performance across industrial, automotive, and construction applications.

Huaxia-Steel manufactures spring washers from high-carbon spring steel (65Mn, 70#) and medium-carbon structural steel (Q235, 1045) with heat treatment and surface finishing to match application requirements.

Types and Specifications

Split Lock Washer (DIN 127B / ASME B18.21.1)

The most common spring washer type, featuring a helical split that creates spring force when compressed.

Size (for bolt)	ID (mm)	OD (mm)	Thickness (mm)	Width (mm)
M3	3.2	6.2	0.6	1.5
M4	4.3	7.6	0.8	1.7
M5	5.3	9.2	1.1	2.0
M6	6.4	11.8	1.3	2.7
M8	8.4	14.8	1.6	3.2
M10	10.5	18.0	2.0	3.8
M12	13.0	21.0	2.5	4.0
M16	17.0	27.0	3.0	5.0
M20	21.0	34.0	3.5	6.5
M24	25.0	38.0	4.0	6.5
M30	31.0	48.0	5.0	8.5
M36	37.0	58.0	6.0	10.5

Wave Spring Washer (DIN 137 / ASME B18.21.1)

Provides moderate spring force with minimal axial deflection. Ideal for bearing preload and light vibration damping.

Disc Spring Washer (DIN 2093)

High-load, low-deflection washers stacked in series or parallel to achieve specific spring characteristics. Common in heavy machinery and bolted flange connections.

Tab Washer (DIN 93 / DIN 463)

External or internal tab washers that mechanically lock nuts or bolts by bending tabs against flats. Used where vibration is severe and spring washers insufficient.

Fig 2

Material Grades

Material	Standard	Hardness (HRC)	Application
65Mn	GB/T 1222	40-50	Standard spring washers
70# / 70	GB/T 699	42-52	High-fatigue applications
60Si2Mn	GB/T 1222	43-50	Heavy-duty spring washers
50CrV	GB/T 1222	45-52	High-stress, shock loading
Q235 / 1045	GB/T 700	—	Tab washers (non-spring)
SS304 / SS316	ASTM A240	—	Corrosion-resistant (on request)

Chemical Composition (65Mn)

Element	Composition (%)
Carbon (C)	0.62-0.70
Manganese (Mn)	0.90-1.20
Silicon (Si)	0.17-0.37
Phosphorus (P)	≤0.035
Sulfur (S)	≤0.035
Chromium (Cr)	≤0.25
Nickel (Ni)	≤0.25

Manufacturing Process

Material selection: Cold-rolled spring steel strip, bright annealed
Blanking: Progressive die cutting of washer blanks from coil strip
Forming:
- Split washers: Coiling and splitting operations
- Wave washers: Press forming with wave dies
- Disc springs: Stamping and coning operations
Heat treatment: Austenitizing 820-860°C, oil quench, tempering 350-450°C
Shot peening: Surface compression for fatigue life improvement
Surface finishing: Phosphating, zinc plating, or coating per specification
Setting: Pre-compression to eliminate permanent set in service
Inspection: Dimensional, hardness, load-deflection, surface quality

Fig 3

Mechanical Properties

Property	Split Lock Washer	Wave Washer	Disc Spring
Spring deflection range	10-30% of free height	5-15% of wave amplitude	15-25% of free height
Load capacity	Low-moderate	Low	High
Fatigue life (cycles)	1,000-10,000	5,000-50,000	100,000-1,000,000
Resists loosening	Moderate	Light	High
Reusability	Limited (1-2 uses)	Good	Excellent

Surface Finishes

Finish	Process	Corrosion Resistance
Plain / Oiled	Rust preventive oil dip	Indoor, short-term storage
Black oxide	Chemical conversion coating	Indoor, moderate protection
Zinc plated (blue)	Electroplating, 5-8 μm	Indoor, good protection
Zinc plated (yellow)	Electroplating + chromate	Outdoor, protected
Hot-dip galvanized	ASTM A153, 40-60 μm	Outdoor, excellent
Mechanical zinc	Tumbling with zinc powder	Good, no hydrogen embrittlement
Dacromet	Dip-spin zinc flake	Superior, 500h+ salt spray
Phosphate + oil	Manganese phosphate	Good with oil film

Applications

Automotive: Engine mounts, suspension systems, chassis fasteners
Machinery: Gearbox housings, pump flanges, motor mounts
Construction: Structural steel connections, façade fixings
Railway: Track fastening, rail clip assemblies
Electrical: Transformer bushings, switchgear assemblies
Marine: Deck equipment, railing fasteners (HDG or Dacromet)

Quality Assurance

Dimensional inspection: ID, OD, thickness, free height per gauge
Hardness testing: Rockwell C on formed washers
Load testing: Compression to solid height, verify springback
Surface inspection: Cracks, decarburization, coating adhesion
Salt spray testing: ASTM B117 for coated washers
Certificate: EN 10204 3.1 standard; full test reports available

Packaging and Shipping

Standard: 1-5kg plastic bags, cartons of 20-25kg
Bulk: 500-1,000kg wooden crates
Ocean freight: VCI bags or desiccant with sealed master cartons
Labeling: Size, type, material, quantity, batch, standard

Ordering Information

Please specify when requesting quotation:

Washer type (split lock, wave, disc, tab)
Nominal bolt size or ID/OD/thickness dimensions
Material grade (65Mn, 70#, 60Si2Mn, Q235)
Standard (DIN 127, DIN 137, DIN 2093, ASME B18.21.1)
Surface finish
Quantity and delivery schedule
Special requirements (load testing, certificates)

Need carbon steel spring washers for your application? Contact Huaxia-Steel for competitive pricing, material recommendations, and reliable delivery of certified spring washers.