Introduction
DIN- 6798
An internal external star washer is a type of washer that has teeth or notches along both the inner and outer edges. It can be used on either the inside or outside of a component or assembly, depending on the specific application. This type of washer is designed to help prevent loosening due to vibration or torque by providing a secure grip on the fastener and the material being fastened. Internal external star washers are available in a variety of materials, including steel, stainless steel, brass, and plastic, and can be used with a variety of fastener types and sizes. They are often used in applications where a secure hold is necessary and space is limited.
External Star Lock Washers
The advantages of Serrated Safety Washers are :- Used for high vibration resistance due to positive rib contact.
- Excellent Pretensioning.
- Through proper radius selection, no splitting/cracking occurs during tightening.
- The concentric force of the washer eliminates the chances of bending the fastener.
- Extensive application and flexibility, minimizes stocks.
Dimension Table for Star washers
| Internal Star Washer AS PER DIN DIN 6798 B | |||||||
| PART CODE | SIZE | INNER DIAMETER (d1) | OUTER DIAMETER (d2) | THICKNESS (s) | NO.OF TEETH | ||
| MIN | MAX | MIN | MAX | NOM | |||
| ISW02000 | M 2 | 2.20 | 2.34 | 4.20 | 4.50 | 0.30 | 9.00 |
| ISW02500 | M 2.5 | 2.70 | 2.84 | 5.20 | 5.50 | 0.40 | 9.00 |
| ISW03000 | M 3 | 3.20 | 3.38 | 5.70 | 6.00 | 0.40 | 9.00 |
| ISW03500 | M 3.5 | 3.70 | 3.88 | 6.64 | 7.00 | 0.50 | 10.00 |
| ISW04000 | M 4 | 4.30 | 4.48 | 7.64 | 8.00 | 0.50 | 11.00 |
| ISW05000 | M 5 | 5.30 | 5.48 | 9.64 | 10.00 | 0.60 | 11.00 |
| ISW06000 | M 6 | 6.40 | 6.62 | 10.57 | 11.00 | 0.70 | 12.00 |
| ISW08000 | M 8 | 8.40 | 8.62 | 14.57 | 15.00 | 0.80 | 14.00 |
| ISW10000 | M 10 | 10.50 | 10.77 | 17.57 | 18.00 | 0.90 | 16.00 |
| ISW12000 | M 12 | 13.00 | 13.27 | 19.98 | 20.00 | 1.00 | 16.00 |
| ISW14000 | M 14 | 15.00 | 15.27 | 23.48 | 24.00 | 1.00 | 18.00 |
| ISW16000 | M 16 | 17.00 | 17.27 | 25.48 | 26.00 | 1.20 | 18.00 |
| ISW18000 | M 18 | 19.00 | 19.33 | 29.48 | 30.00 | 1.40 | 18.00 |
| ISW20000 | M 20 | 21.00 | 21.33 | 32.38 | 33.00 | 1.40 | 20.00 |
| ISW22000 | M 22 | 23.00 | 23.33 | 35.38 | 36.00 | 1.50 | 20.00 |
| ISW24000 | M 24 | 25.00 | 25.33 | 37.38 | 38.00 | 1.50 | 20.00 |
| ISW26000 | M 26 | 28.00 | 28.33 | 44.38 | 45.00 | 1.60 | 22.00 |
| ISW30000 | M 30 | 31.00 | 31.39 | 47.38 | 48.00 | 1.60 | 22.00 |