Washers

Your Professional Washers Manufacturers

Washers are essential fastening components designed to distribute loads, protect mating surfaces, improve joint stability, and enhance fastening performance.

DC Screws is dedicated to providing high-quality washers products that meet international standards to customers worldwide.

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DIN125 Flat Washer Supplier Metric Flat Washers Manufacturer

DIN125 flat washers are standard metric plain washers designed to distribute clamping force, reduce localized stress, and protect contact surfaces in bolted assemblies. They are widely used with

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DIN127 Spring Washer

The DIN 127 Spring Washer is a helical washer designed to maintain preload in bolted assemblies and prevent loosening under vibration, dynamic loads, or thermal expansion.

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Carbon Steel and Stainless Steel Square Washer

The Square Washer is designed for structural bolting applications requiring stable load distribution and reliable surface support. Available in carbon steel and stainless steel materials, it is

Product Specifications

Product Name	Washer
Standard	DIN125A, DIN9021, ASTM F844 SAE, USS,F436
Material	Stainless steel :SS201, SS202,SS303, SS304, SS316,SS316L,SS904L,F593
Material	Carbon steel:Q195,Q235,35K,45K,42Grmo,307A,307B,A325,A394,A490,A449
Finishing	Plain, Black, zinc-plated, HDG, Nickel, Gr, Dacromet, Geomet
Production	Stamping
Process	Machining and CNC for Customized fastener
Packing	Bulk packing : 20kg per carton; 36 cartons per pallet small boxes or bags packing are available
Certs	Material Certs and inspection certs are available
Samples	Free Samples for standard fastener

Size Chart

	Inner Diameter (D1, Mm)	Outer Diameter (D2, Mm)	Thickness (S, Mm)
M2	2.1	4.1	0.5
M4	4.3	7.6	1
M6	6.4	11.8	1.6
M8	8.4	14.8	2
M10	10.5	18.1	2.5
M12	12.5	21.1	3
M16	16.5	28.2	3.5
M20	20.5	34.5	4

Performance

Performance Item	Description
Load Distribution	Reduces concentrated stress on fastening surfaces
Anti-Loosening Performance	Improves fastening security under vibration
Corrosion Resistance	Available with zinc plating, hot-dip galvanizing, stainless steel, and specialty coatings
Wear Resistance	Protects mating surfaces from damage
Temperature Resistance	Suitable for various operating environments
Sealing Capability	Prevents leakage in fluid and gas systems
Electrical Insulation	Available for electrical protection applications
Structural Stability	Supports long-term structural integrity

Applications

Our industrial-grade washers serve as the bedrock of safety and stability across multiple demanding global sectors:

Automotive & Transportation: Deployed in powertrain assemblies, chassis systems, and vibration-heavy suspension units to maintain constant joint tension.

Construction & Infrastructure: Utilized heavily in structural steel connections, bridge building, and commercial roofing systems requiring long-term load distribution.

Energy, Oil & Gas:

High-grade stainless and alloy washers applied in offshore drilling rigs, pipelines, wind turbines, and solar tracking structures to withstand harsh corrosive elements.

Electronics & Electrical Engineering:

Non-conductive or specialized brass/copper washers designed for grounding, electrical insulation, and precise spacing in control panels.

Machinery & Industrial Automation:

Integrated into heavy manufacturing equipment, hydraulic systems, and processing plants to absorb cyclic shocks.

Manufacturing Process

Our smart manufacturing facility leverages a closed-loop production cycle to guarantee zero-defect high-volume outputs:

Material Procurement & Inspection:

Sourcing certified steel coils/sheets with full traceability and chemical composition verification.

Precision Stamping & Blanking:

Utilizing high-speed automated progressive die presses to punch precise inner/outer diameters with minimal burr generation.

Secondary Machining (If Required):

Precision chamfering, deburring, and smoothing via advanced vibratory finishing systems.

Heat Treatment:

Controlled atmosphere through-hardening or tempering processes to achieve specified Rockwell/Vickers hardness.

Surface Finishing & Plating:

Multi-stage chemical cleaning followed by automated electroplating, galvanizing, or organic coating lines.

Final Sort & Inspection:

Optical sorting and automated sensor verification to eliminate dimensional deviations before moving to packaging.

Packaging & Delivery

To ensure safe transportation and storage, washers are packed using protective industrial packaging solutions.

Packaging options include:
Bulk cartons
Plastic bags
Kraft paper packaging
Export-grade cartons
Palletized packaging
Wooden crate packaging

Delivery services:
Sea Freight
Air Freight
Rail Transportation

Lead Time

Quantity (kilograms)	1 - 1000	1001 - 10000	10001 - 25000	> 25000
Lead time (days)	7	15	30	To be negotiated

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FAQ

Q: Could you provide free samples?

A: We can offer samples for free, but the shipping cost shall be negotiated by both sides.

Q: How should I order and make payment?

A: By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.

Q: Can washers be reused?

A: Flat and fender washers can often be reused if undamaged. Lock/spring and sealing types may lose effectiveness after first use—inspect and replace as needed.

Q: Do washers comply with international standards?

A: Yes. Products can be manufactured according to DIN, ISO, ASTM, EN, and customer-specific standards.

Q: What is your standard turnaround time for mass production of bulk washer orders?

A: Standard production lead times average between 7 to 30 days, depending on the material type, requested surface treatment, and order volume. For stocked raw materials or standardized blank profiles, we can accelerate dispatch.

Q: How do you guarantee that washers will not rust during maritime transport or long-term storage?

A: All metal washers undergo post-treatment rust-preventative oiling or high-grade surface plating. Furthermore, our export packaging includes heavy-duty interior poly-liners and desiccant packs inside sealed cartons to fully eliminate moisture ingress during transit.

As one of the most professional washers manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. Please feel free to wholesale bulk high quality washers in stock here and get pricelist from our factory. Customized orders are welcome.