External Internal Tooth Lock Washer
DIN 6798 (Historical)
- Material
- Stainless Steel, Alloy Steel
- Finish
- Passivated, Plain, Zinc Plated, Dacromet and more
- Size range
- M5–M20
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Select sizes and quantities — 7 confirmed sizes to DIN 6798
Material
Finish
| dNominal Diameter (mm) | d1Inner Diameter (mm) | d2Outer Diameter (mm) | hWasher Thickness (mm) | MOQ | Quantity and inquiry |
|---|---|---|---|---|---|
| M5 | 5.3 | 10 | 0.6 | 2000 | |
| M6 | 6.4 | 11 | 0.7 | 2000 | |
| M8 | 8.4 | 15 | 0.8 | 2000 | |
| M10 | 10.5 | 18 | 0.9 | 1000 | |
| M12 | 13 | 20.5 | 1 | 1000 | |
| M16 | 17 | 26 | 1.2 | 1000 | |
| M20 | 21 | 33 | 1.4 | 500 |
Showing 7 of 7 sizes
dNominal Diameter (mm)M5
d1Inner Diameter (mm)5.3
d2Outer Diameter (mm)10
hWasher Thickness (mm)0.6
MOQ2000
M6 × 6.4 × 11 × 0.7
dNominal Diameter (mm)M6
d1Inner Diameter (mm)6.4
d2Outer Diameter (mm)11
hWasher Thickness (mm)0.7
MOQ2000
M8 × 8.4 × 15 × 0.8
dNominal Diameter (mm)M8
d1Inner Diameter (mm)8.4
d2Outer Diameter (mm)15
hWasher Thickness (mm)0.8
MOQ2000
M10 × 10.5 × 18 × 0.9
dNominal Diameter (mm)M10
d1Inner Diameter (mm)10.5
d2Outer Diameter (mm)18
hWasher Thickness (mm)0.9
MOQ1000
M12 × 13 × 20.5 × 1
dNominal Diameter (mm)M12
d1Inner Diameter (mm)13
d2Outer Diameter (mm)20.5
hWasher Thickness (mm)1
MOQ1000
M16 × 17 × 26 × 1.2
dNominal Diameter (mm)M16
d1Inner Diameter (mm)17
d2Outer Diameter (mm)26
hWasher Thickness (mm)1.2
MOQ1000
M20 × 21 × 33 × 1.4
dNominal Diameter (mm)M20
d1Inner Diameter (mm)21
d2Outer Diameter (mm)33
hWasher Thickness (mm)1.4
MOQ500
Product details
- Description
- External internal tooth lock washer manufactured to DIN 6798. This serrated lock washer uses internal and external teeth to prevent loosening under vibration. Available in metric diameters from M5 to M20, with inner diameter (d1), outer diameter (d2), and thickness (h) per the standard. Material options include alloy steel and stainless steel, with finishes such as zinc plated, Dacromet, blackened, plain, or passivated. Minimum order quantities vary by size. When requesting a quotation, specify the required diameter, material, and finish.
- Features
- Serrated internal and external teeth for secure locking · Available in alloy steel and stainless steel · Multiple surface finishes including zinc plated and Dacromet · Metric sizes M5 to M20 per DIN 6798
- Applications
- Joints subject to vibration, Machinery and equipment assembly, Maintenance and repair work
Order assurance
Confirmed for the quoted product and order.Reports & inspection
Agreed in the quotation.
- EN 10204 3.1 material certificate
- Dimensional inspection report
- Certificate of conformity
- Mechanical test report
- Chemical analysis report
- Coating inspection report
- Batch and lot traceability
Packaging & delivery
Options we supply.
- Bulk carton packing
- Small boxes with outer cartons
- Palletized shipment
- Fumigation-free pallets
- Inner poly bags
- Buyer branding and labels
Product questions
What sizes of External Internal Tooth Lock Washer do you supply?
Execution standard: DIN 6798. The confirmed specification table covers M5–M20 diameters. Use the specification table to select the exact variant required for quotation.
Which materials, grades and finishes can I order?
Material: Stainless Steel, Alloy Steel; Finish: Passivated, Plain, Zinc Plated, Dacromet, Blackened. Availability should be confirmed against the selected specification and order quantity.
DIN 6798 is withdrawn — can you still supply it?
Yes. DIN 6798 is still ordered against existing drawings and is quoted as the execution standard on the order line. Send the drawing or the exact designation and the dimensions actually required.







