What are the packaging details?

Standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet (approx. 900-960 kg). Custom packaging with customer logos is available.

Can I visit your factory?

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

How can I get the catalog or price list?

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

Stainless Steel Washers, DIN9250 Knurled Lock Washers, Single Knurled Disc Spring Conical Contact Lock Washers

Name: Stainless Steel Washers, DIN9250 Knurled Lock Washers, Single Knurled Disc Spring Conical Contact Lock Washers
Brand: Bolnut Fastener Co., Ltd
SKU: 2246648765

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/Carbon Steel

Model NO.

DIN9250

Combination Washer Structure

A Type

Combination Washer Packaging

All Inclusive

Spring Washer Type

Standard

Finish

Hot Galvanizing,Black, Color-Zinc

Measurement

Metric, Imperial (Inch)

Sample

Available

Certificate

ISO 9001 2015/ISO 14001 2015

MOQ

10000PCS

Application Fields

Power and Construction Engineering

Transport Package

20-25kg/Carton+900kg Pallet

Specification

M3-M36

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Wide Material Selection: Available in Stainless Steel (SS201/304/316) and Carbon Steel.

Multiple Finishing Options: Zinc, Hot Dip Galvanized, Black Oxide, Nickel Plated, and more.

Custom Logo & Design: We accept custom logos and product designs based on customer requirements.

Free Sample Service: Free samples provided for standard fasteners; weight under 1kg shipped free.

Flexible Delivery Time: Stock items deliver in 2-5 days; bulk orders take 10-30 days depending on season.

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

ISO Certified Manufacturer: Verified supplier with ISO 9001 and ISO 14001 certifications.

Competitive Pricing: Cost-effective solutions backed by professional factory production capabilities.

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: ≤0.81h

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, samples are free for standard fasteners. We ship weights under 1kg for free. Existing customers also get free samples with covered express charges.

Q:What is the delivery time?

Stock items can be delivered within 2-5 days. Bulk orders take 10-15 days in slack season and 15-30 days in busy season. Expedited production is available for large 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 designs or logos?

Yes, we accept customized designs for products and packaging. Our professional design team can create products based on your specifications or drawings.

Q:What materials are available?

We offer Stainless Steel (SS201, SS303, SS304, SS316, SS904L) and Carbon Steel in various standard grades.