What surface treatments are available?

We offer Black, Zinc, or Customized surface treatments for our spring washers.

What grades of spring washers do you produce?

We produce spring washers in Grade 4.8, 8.8, 10.9, and 12.9.

What standards do your products comply with?

Our products comply with DIN, ANSI, and GB standards.

Spring Washers Factory - Grade 4.8 with Black Surface Treatment, DIN Standard

Name: Spring Washers Factory - Grade 4.8 with Black Surface Treatment, DIN Standard
Brand: Handan Daduo Metal Products Co., Ltd.
SKU: 2215873325

Hebei, ChinaHandan Daduo Metal Products Co., Ltd.

US$0.01-0.05

3,000 Pieces

Product profile

Customization

Available

Type

Spring Washer

Material

Carbon Steel

Model NO.

M5-M30

Combination Washer Structure

A Type

Combination Washer Packaging

All Inclusive

Spring Washer Type

Standard

Grade

4.8/8.8/10.9/12.9

Surface Treatment

Black/Zinc/Customized

Standard

DIN, ANSI, GB

Testing

Salt Spray Test

Transport Package

Boxes

Specification

25*21*18mm

Trademark

da duo

Origin

Hebei China

Key features

Custom Surface Treatment: Offers Black, Zinc, or Customized surface treatments for spring washers.

Multiple Grade Options: Available in Grade 4.8, 8.8, 10.9, and 12.9 to meet various strength needs.

OEM/ODM Services: Supports custom logo and design imprinting on products for branding.

High Production Capacity: Annual output exceeds 8,000 tons with 30 sets of cold heading machines.

Fast Shipping for Stock: In-stock items are guaranteed to ship within one week.

Wide Standard Compliance: Products comply with DIN, ANSI, and GB standards for global use.

Salt Spray Tested: All products undergo salt spray testing to ensure quality and durability.

Established Manufacturer: Factory founded in 2003 with over 60 skilled employees and professional support.

Company profile

High Repeat Buyers ChoiceQuality AssuranceQA/QC InspectorsIn-stock Capacity

Handan Daduo Metal Products Co., Ltd.

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Designs, Full Customization, etc.Export Year: 2011-03-17Nearest Port: TianjinAverage Response Time: ≤0.08hTerms of Payment: LC, T/T, D/P

About Our Factory & Business Background

AddressLinmingguan Town Xiduanzhuang Industrial Zone, Handan, Hebei, China

Plant Area2193.1 square meters

Number of Employees26

Registered Capital2,000,000 RMB

International Commercial Terms(Incoterms)FOB

Average Lead TimePeak Season Lead Time: 1-3 months Off Season Lead Time: one month

Our Production Capability & Technical Expertise

Main ProductsBolt, Carriage Bolt, Nut, Washer, Screw, Stud

Production Lines25

Production MachinesWire drawing machine, Cold heading and thread rolling machine

QA/QC inspectors2 people

Inspection Type for Finished ProductsRandom inspection(Visual inspection)

Inspection Method for Finished ProductsFinished product checked by packing staff

R&D Engineers1 people

Traceability of Raw MaterialsNo

Our Industry Experience & Global Business Record

Year of Establishment2022-08-05

Main MarketsNorth America, Southeast Asia, Africa, Eastern Asia

Repeat Buyers Choice80%~100%

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500No

Product Q&A

Q:Can I obtain samples?

Yes, samples are available.

Q:Can I use my own logo or design on the product?

Yes, we offer OEM/ODM services; your logo and design can be imprinted on the product.

Q:Do you have a factory?

Yes, we have a factory in Hebei. You are welcome to visit our company and factory. We are a professional manufacturer, providing OEM/ODM services to our customers.

Q:What is the production capacity of your factory?

Our factory boasts 30 cold heading machines of various sizes, employs nearly 60 skilled workers, and has an annual production capacity of 8,000 tons.

Q:When will the goods be shipped?

Some of our products are in stock and guaranteed to be shipped within one week. For customized orders, they will be shipped within one month after production is arranged. The specific situation may vary depending on local government policies. We can maintain communication at any time to keep abreast of the production and shipping progress.