What materials are available for your washers?

We offer washers in: Carbon steel (mild steel, hardened steel) Stainless steel (A2/304, A4/316) Alloy steel Copper, brass, aluminum Material selection depends on load capacity, corrosion resistance, and application requirements.

Can you produce sealing washers for waterproof or pressure applications?

Yes. We supply: Metal + EPDM bonded washers Metal + rubber vulcanized washers Copper sealing washers Suitable for roofing, HVAC, hydraulic, and automotive systems.

DIN 137 Carbon Steel Black Oxidation Wave Spring Washer

Name: DIN 137 Carbon Steel Black Oxidation Wave Spring Washer
Brand: Ningbo Mianxuan Import &Export Co., Ltd.
SKU: 2063358875

Zhejiang, ChinaNingbo Mianxuan Import &Export Co., Ltd.

US$0.01

5,000-19,999 Pieces

US$0.006

20,000-49,999 Pieces

US$0.003

50,000+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Spring Washer

Material

Carbon Steel

Model NO.

DIN137

Combination Washer Structure

B Type

Spring Washer Type

Standard

Price

Factory Price

Service

One-Stop Service

Quality

100% Tested

Surface

Plain, Zinc Plated (Blue, White, Black, Yellow), N

Lead Time

15-30 Days

Package

Standard Package or Customer's Packing

Box

Customer's Brand Box/Plain Box

MOQ

Can Be Negotiated

Shipment

by Sea / Truck / Plane / Express

Exterior Finish

Customized

Sample

Available

Customized

Available

Used

Machinery, Chemical Industry, Environmental

Online Sales

24 Hours Online

OEM/ODM

Available

Transport Package

Carton

Specification

M3-M36

Trademark

Mianxuan, Customized

Origin

Zhejiang, China

HS Code

73181600

Production Capacity

10000tons/Year

Key features

Comprehensive Material Options: Available in Carbon Steel, Stainless Steel, Brass, Alloy Steel, Copper, and Aluminum.

Extensive Size Range: Standard sizes from M2.7 to M39 with non-standard options available upon request.

Diverse Surface Finishes: Options include Plain, Black Oxide, Zinc Plated, Yellow Zinc, HDG, Geomet, and Dacromet.

Wide Grade Selection: Covers grades from 4.8 to 12.9, including A2-70, A4-70, and A4-80.

OEM and Customization: Custom shapes, non-standard designs, and custom packaging with customer branding available.

Strict Quality Control: Every batch tested for torque, hardness, thread precision, and salt spray resistance.

Flexible Lead Time: 15-30 days standard lead time, with off-season delivery within 15 workdays.

Sample Availability: Free or low-cost samples provided for quality and dimension confirmation before mass production.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceR&D CapabilitiesODM Services

Ningbo Mianxuan Import &Export Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2014-07-01Nearest Port: Ningbo, Zhapu, ShanghaiAverage Response Time: ≤3.81hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryNingbo Mianxuan Import & Export Co., Ltd. is identified as a China-based manufacturer/factory offering vehicle parts, CNC machining, stamping, casting, die-casting, fasteners, plastic, and rubber products. It reports TS 16949 and ISO 9001 certifications, more than 10 production lines, 6–10 quality-control staff, and shipment inspection reports with material certificates. The supplier provides 3D software design, ODM, and several customization options, but reports no new products in the past year, no SDK, and no OEM service for popular brands. Service-management documentation is weak: no written procedures or records are reported for assessments, corrective actions, or complaint handling. It has no in-stock capability, overseas warehouse, or overseas showroom. Financial records are indicated for 2023–2025, but their results are not provided, so financial credibility cannot be determined. No customer cases are supplied.

Supplier typeThe supplier is explicitly identified as a manufacturer/factory and limited company in Ningbo, Zhejiang, China. Its stated scope covers fasteners, metal products, machinery, vehicle parts, CNC machining, stamping, casting, die-casting, plastic, and rubber parts, indicating broad manufacturing and industrial-product coverage.

CertificationsThe supplier reports holding TS 16949 and ISO 9001 management-system certifications. It also states that each shipment will include an effective inspection report and corresponding material certificate, providing explicit evidence of documented quality-related controls.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling. It also lacks in-stock service, overseas warehouse, and overseas showroom capabilities, indicating a documented weakness in after-sales and service infrastructure.

Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, and a product range spanning vehicle parts, CNC machining, stamping, casting, die-casting, fasteners, plastic, and rubber parts. It is located near Ningbo and Shanghai ports and reports 21 qualified suppliers, but has no inventory capability and peak-season lead-time data is inconsistent or unclear.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, 3D software design services, and ODM services. These statements provide direct evidence of broad product and design customization capability.

Product Q&A

Q:What types of metal washers do you supply?

We manufacture a wide range of washers, including: Flat washers (DIN 125 / ISO 7089) Spring lock washers (DIN 127 / DIN 7980) Fender washers Sealing washers (EPDM bonded, rubber-bonded) Cup washers, square washers, heavy-duty washers Custom-shaped or non-standard washers

Q:Do you provide hardened washers for high-strength bolts?

Yes. For applications requiring high preload or structural fastening, we offer: Grade 8.8 / 10.9 / 12.9 compatible washers Heat-treated washers meeting mechanical performance requirements

Q:Do you provide samples before mass production?

Yes, we offer free or low-cost samples for quality and dimension confirmation prior to order.

Q:How do you control product quality?

Every batch is tested for torque, hardness, thread precision, and salt spray corrosion resistance, following ISO 9001 quality system standards.

Q:Do you offer OEM or customized production?

Yes. We can produce screws according to samples, technical drawings, or specific drive/head combinations, and offer custom packaging and labeling.