How can I get the catalog or price list?

Please provide your email address, and we will send the catalog or price list within two working hours.

Can I visit your factory?

Yes, factory visits are welcome. Please contact us in advance to arrange transportation from the airport or train station.

China Fasteners DIN137 SS304 Wave Spring Lock Washers

Name: China Fasteners DIN137 SS304 Wave Spring Lock Washers
Brand: Bolnut Fastener Co., Ltd
SKU: 2221993645

Jiangsu, ChinaBolnut Fastener Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Type

Spring Washer

Material

Stainless Steel

Model NO.

Din137

Combination Washer Structure

A Type

Combination Washer Packaging

All Inclusive

Spring Washer Type

Light Weight

Transport Package

20-25kg/Carton+900kg Pallet

Specification

#2-3'/M3-12

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Custom Logo & Design: We accept custom logos and designs on both products and packaging.

Free Samples Available: Free samples provided for standard fasteners; weight under 1kg shipped free.

Wide Material Options: Available in SS201, SS303, SS304, SS316, SS904L, and various carbon steels.

Multiple Finishing Options: Options include Zinc, HDG, Black Oxide, Geomet, Dacroment, and Nickel plating.

Flexible Lead Time: 10-15 days in slack season; 15-30 days in busy season for customized orders.

OEM & ODM Service: Professional manufacturer offering full customization from samples and designs.

Strict Quality Assurance: Rigorous durability testing and technical design to enhance product lifespan.

Verified Manufacturer: Verified supplier on Made-in-China with over 10 years of manufacturing experience.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Bolnut Fastener Co., Ltd

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 YearsNearest Port: SHANGHAI , NINGBO ,ZHAPU , SHENZHEN, TIANJINGAverage Response Time: ≤0.94h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company in Zhangjiagang, Suzhou, with business scopes covering labor protection products, apparel, textiles, communication equipment, electronics, and certain medical protective products. It is described as a professional technical supplier and offers multiple customization modes, ODM services, and OEM services for popular brands. However, it has only one R&D engineer, launched no new products in the past year, and does not provide 3D software or SDK services. Service procedures and complaint-handling procedures exist, but supplier approval records are incomplete. Financial information is represented only by reporting years, without performance values. No overseas warehouse, showroom, overseas branch or offline trade-show participation is reported.

Supplier typeThe supplier is explicitly classified as a trade company, while its stated scope includes labor protection products, apparel, textiles, medical protective equipment, communication equipment, and electronic products. It is also identified as a professional technical supplier, indicating a trading-oriented business with technical and customization support rather than confirmed manufacturing status.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records, and it has a corrective and preventive action mechanism with implementation records. However, its general service-assessment procedure has no records, and its approved-supplier list lacks approval signatures or dates, indicating documented but incompletely controlled service processes.

R&D capabilityThe supplier is identified as a professional technical supplier and offers ODM services, but it has only one R&D engineer, launched no new products in the past year, and lacks both 3D software design and SDK capabilities. This shows some technical development and design support, but limited demonstrated innovation output and digital R&D capability.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, directly evidencing broad customization and design-manufacturing support.

Client casesA repeat-buyer preference of 50%–80% is reported, and the supplier states that it provides OEM services for popular brands. These are positive customer-related indicators, but no named customers, specific projects, order examples, or independently verifiable case details are provided.

Product Q&A

Q:Can I get free samples?

Yes, we provide free samples for standard fasteners. For shipments under 1kg, we cover the cost. Existing customers also receive free samples with express charges covered.

Q:What is the delivery time?

Stock items can be delivered within 2-5 days. For 1-2 containers, it takes 18-25 days. Expedited production is available for larger orders.

Q:What are the payment terms?

Standard terms are 30% T/T deposit and 70% before shipping. We also accept L/C, D/P, PayPal, and Western Union.

Q:Do you accept custom logos or designs?

Yes, we accept customized designs for both products and packaging, supported by our professional design team.

Q:What is your standard packaging?

Standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet. Custom packaging with customer logos is also available.