Send Message

DIN6340 Washer/Heavy Washer, M6-M30, Black Oxide

One Pallet For One Size
DIN6340 Washer/Heavy Washer, M6-M30, Black Oxide
Features Gallery Product Description Request A Quote
Name: DIN6340 Washer/Heavy 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
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



      Regarding DIN 6340 washers, if they are specified to have a "Black Oxide" finish, it means that they have undergone a surface treatment process known as black oxide coating or blackening.

      Black oxide coating is a conversion coating that creates a thin black layer on the surface of the washer. The process typically involves immersing the washers in an alkaline solution at high temperature. This coating provides several benefits, including improved corrosion resistance, increased lubricity, and enhanced aesthetic appearance.

      The black oxide coating primarily serves as a protective layer against corrosion, although it may not offer the same level of corrosion resistance as some other coatings, such as hot-dip galvanizing or Dacromet. It is commonly used in applications where aesthetics or mild corrosion resistance are desired, such as decorative or low-corrosion environments.

      In summary, DIN 6340 washers with a "Black Oxide" finish are heavy washers available in metric sizes ranging from M6 to M30. The black oxide coating provides some corrosion resistance while also offering an attractive black appearance. However, if high levels of corrosion resistance are required, alternative coatings or finishes may be more suitable.




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/Heavy Washer, M6-M30, Black Oxide 0DIN6340 Washer/Heavy Washer, M6-M30, Black Oxide 1

Recommended Products
Get in touch with us
Contact Person : Joy Yu
Tel : +86 15250117179
Characters Remaining(20/3000)