What grades are available for these washers?

We provide washers in Grade 4.8, 8.8, 10.9, and 12.9.

What surface treatments are offered?

We offer Black, Zinc, or Customized surface treatments.

What standards do your products comply with?

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

Flat Washers Carbon Steels Grade 4.8 with Black Surface Treatment

Name: Flat Washers Carbon Steels Grade 4.8 with Black Surface Treatment
Brand: Handan Daduo Metal Products Co., Ltd.
SKU: 2208237535

Hebei, ChinaHandan Daduo Metal Products Co., Ltd.

US$0.01-0.05

3,000 Pieces

Product profile

Customization

Available

Type

Flat Gasket

Material

Stainless Steel

Model NO.

M5-M30

Combination Washer Structure

B 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

Customizable Grades: Available in Grade 4.8, 8.8, 10.9, and 12.9 to meet specific strength requirements.

Surface Treatment Options: Offers Black, Zinc, or Customized surface treatments for corrosion resistance and aesthetics.

Wide Size Range: Specifications range from 5mm-20mm diameter and 16mm-400mm length for diverse applications.

High Production Capacity: Annual production capacity exceeds 8,000 tons with 30 sets of equipment and 60 employees.

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

Multiple Standards: Complies with DIN, ANSI, and GB standards for international market compatibility.

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

Fast Shipping: Stock items ship within one week; customized orders ship within one month after production.

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: ≤0.09hTerms 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.