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DIN6340 Washer/Hardened Steel Washer, M6-M30, Black Oxide

One Pallet For One Size
DIN6340 Washer/Hardened Steel Washer, M6-M30, Black Oxide
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Name: DIN6340washer/Hardened Steel Washer
Material: S45C/40CR
Size: M6-M30
Finish: Plain/black/ZINC/HDG/Dacromet
Standard: DIN6340
Hardness: HV300/HRC35-45
Application: Construction, Bridges, Machinery And Automobile Manufacturing
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Basic Infomation
Place of Origin: China
Brand Name: YNK
Certification: ISO9001;ISO14001;ISO45001;CE
Model Number: DIN6340
Payment & Shipping Terms
Packaging Details: Pallet
Payment Terms: T/T
Supply Ability: 50T For 1 day
Product Description



      If you are referring to hardened steel washers in the size range of M6 to M30 with a black oxide finish, here is some general information:

      1.Material: Hardened steel washers are made from steel that has undergone a hardening process to increase its strength and durability.

      2.Black Oxide Finish: The black oxide coating is a conversion coating applied to the surface of the washer. It provides several benefits, including improved corrosion resistance, increased lubricity, and an aesthetically pleasing black appearance.

  •         Corrosion Resistance: The black oxide finish enhances the washer's resistance to corrosion, protecting it from rust and other forms of oxidation. However, it is not as corrosion-resistant as some other coatings, such as hot-dip galvanizing or Dacromet.

  •         Lubricity: The black oxide coating reduces friction between the washer and the mating surface, making installation easier and reducing the risk of galling or seizing during tightening.

  •         Aesthetics: The black oxide finish gives the washers a visually appealing black appearance, which can be desirable in certain applications.

      Washers with a black oxide finish are commonly used in various industries, including automotive, machinery, and general manufacturing. They provide moderate corrosion resistance and are suitable for indoor or low-corrosion environments.

      However, it's important to note that the specific DIN standard for washers should be confirmed to ensure the accuracy of the information and to comply with the appropriate standards for your application.



Material 45#/40CR
Size M6-M30
Finish Plain/black/ZINC/HDG/Dacromet/Mechanical Galvanized
Hardness HV300/HRC35-45
Marking can be Customized
Application Constrution/Wind turbines/railway line
Packing Carton+ pallet; we can pack washers as your requirements
Terms FOB+shanghai/ningbo
Delivery time 30-70days



Size Inner diameter(min) Inner diameter(max) Outside diameter(max) Outside diameter(min) Thinkness
M6 6.4 6.75 17 16.57 3
M8 8.4 8.76 23 22.48 4
M10 10.5 10.93 28 27.48 4
M12 13 13.43 35 34.38 5
M16 17 17.43 45 44.38 6
M20 21 21.52 50 49.38 6
M24 25 25.52 60 59.26 8
M30 31 31.62 68 67.26 10



Products pictures for Flat washers

DIN6340 Washer/Hardened Steel Washer, M6-M30, Black Oxide 0

DIN6340 Washer/Hardened Steel Washer, M6-M30, Black Oxide 1

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