Reliable Anti-Loosening Performance
The internal teeth bite into the screw head and supporting surface, increasing friction resistance and reducing the risk of fastener loosening under vibration.
DIN 6798J Serrated Lock Washers with Internal Teeth
- Standard: DIN 6798J (Type J)
- Material: Stainless Steel
- Size: M2–M30 (depending on material and production capability)
- Surface Treatment: Plain, Zinc Plated
- Min Order: 5000pcs
- Sample: Free sample (after quote)
- Delivery time: 30 – 45 Days
Product Overview
Product Application
DIN 6798 J is an internal serrated lock washer designed with multiple teeth around the inner diameter. During tightening, the teeth create additional friction between the fastener head and the mating surface, helping prevent loosening caused by vibration, movement, or mechanical shock.
Compared with external tooth washers (DIN 6798 A), the DIN 6798 J design keeps the serrations inside the washer diameter, making it suitable for applications where a clean outer appearance is required or where the fastener head diameter is smaller than the washer outside diameter.
Draw
Specification
DIN 6798 J vs DIN 6798 A
DIN 6798 J (Internal Tooth)
- Teeth located on inner diameter
- Suitable for small screw heads
- Better appearance after installation
- Commonly used with recessed or smaller bearing surfaces
DIN 6798 A (External Tooth)
- Teeth located on outer diameter
- Provides larger contact area
- Suitable when the bearing surface is larger than the washer outside diameter
Product Advantages
Ideal for Small Screw Heads
The internal serration design works especially well with small diameter screw heads, such as pan head screws, cheese head screws, and socket screws.
Clean Installation Appearance
Unlike external serrated washers, the teeth remain inside the washer profile, providing a more compact and aesthetically cleaner assembly.
Common Questions
What is DIN 6798 J washer used for?
DIN 6798 J is an internal serrated lock washer used to prevent screws and bolts from loosening caused by vibration or mechanical movement.
Can DIN 6798 J washers be reused?
Generally, serrated lock washers are considered single-use components because the teeth may deform after installation and removal.
Which screws are suitable for DIN 6798 J washers?
They are commonly used with pan head screws, cheese head screws, socket screws, and other fasteners where the screw head diameter is smaller than the washer outside diameter.
Can you provide OEM manufacturing?
Yes. We offer customized dimensions, hardness requirements, coatings, laser marking, packaging, and private-label solutions.
