Hardened Metal Stamping Parts Steel Internal Toothed Lock Washer DIN 6797 Type J
Hardened Metal Stamping Parts Steel Internal Toothed Lock Washer DIN 6797 Type J
Stamped internal toothed lock washer with good anti-slip purpose and widely used to various metal or non-metal conjunction , when put a toothed lock washer onto the surface of material , the teeth will be insert into it under pressure , and the opposite side will be touched the surface under head of screw or bolt . internal toothed lock washer will provides enough grip to prevent screw or bolt slipping after installed .
The specifications for internal toothed lock washers are from 1.7 to 31 normally , the total height of lock washers are usually two times the thickness of material .
DIN 6797 type A
| Normal size | d1 | d2 | S1 | h |
| 1.7 | 1.7 | 3.6 | 0.3 | ≥2s1 |
| 2.2 | 2.2 | 4.5 | 0.3 | ≥2s1 |
| 2.7 | 2.7 | 5.5 | 0.4 | ≥2s1 |
| 3.2 | 3.2 | 6 | 0.4 | ≥2s1 |
| 3.7 | 3.7 | 7 | 0.5 | ≥2s1 |
| 4.3 | 4.3 | 8 | 0.5 | ≥2s1 |
| 5.3 | 5.3 | 10 | 0.6 | ≥2s1 |
| 6.4 | 6.4 | 11 | 0.7 | ≥2s1 |
| 7.4 | 7.4 | 12.5 | 0.8 | ≥2s1 |
| 8.4 | 8.4 | 15 | 0.8 | ≥2s1 |
| 10.5 | 10.5 | 18 | 0.9 | ≥2s1 |
| 13 | 13 | 20.5 | 1 | ≥2s1 |
| 15 | 15 | 24 | 1 | ≥2s1 |
| 17 | 17 | 26 | 1.2 | ≥2s1 |
| 19 | 19 | 30 | 1.4 | ≥2s1 |
| 21 | 21 | 33 | 1.4 | ≥2s1 |
| 23 | 23 | 36 | 1.5 | ≥2s1 |
| 25 | 25 | 38 | 1.5 | ≥2s1 |
| 28 | 28 | 44 | 1.6 | ≥2s1 |
| 31 | 31 | 48 | 1.6 | ≥2s1 |
Unit : mm
As the different strengths requested for various applications , internal toothed lock washers are made from different materials
Carbon steel with models 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO
Stainless steel with models SUS 201 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 .
Spring Steel with models 1065 , 1060 , 1070
For the most internal toothed lock washers are plaed nickel ,but there are more finish for choices .
| Finish | Colors | Thickness | Charicteristic |
| Zinc | Blue ,White ,Black ,Yellow | 5-107μm | Bright and smooth surface ,corrosion resistance |
| Nickel | Silver | 1～3μm | Wear resistance ,bright appearance , anti-corrosion |
| Polishing | Silver | 0.01mm ( reference ) | Improving brightness of surface |
| Tin | Silver | 0.13～1.27μm | Good ductility ,corrosion resistance ,lower melting point ,eco-friendly ,brightness |
| Brass | Copper | 5gm～8gm | Good dispersibility ,Bright appearance |
| Dacromet | Grey | 4-8μm | High corrosion resistance , No hydrogen embrittlement ,Heat resistance ,Easy to plated more ,eco-friendly |
| Chrome | Silver white | 0．25～0．5μm |
Harden surface ,Bright surface ,Heat resistance ,Wear resistance Corrosion resistance and eco-friendly
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Internal toothed lock washers are mainly make a role of resistance rotation locking function , and used to various fields in industry .
★ Car and Trucks
★ Air conditioner
★ Aerospace
★ Vessels
★ Bus
★ Telecommunication
★ Machines
★ Official devices
★ Electric items
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