Internal Tooth Lock Washers Steel Zinc

The Internal Tooth Lock Washers Steel Zinc produced by Xiaoguo® Factory maintain a smooth outer contour even after installation, without any edge lifting. They have a neat appearance and are particularly suitable for situations with limited space.

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Product Description

Using steel as the base material and applying galvanization treatment has brought multiple core advantages to this type of Internal Tooth Lock Washers Steel Zinc:

（1）Outstanding rust prevention capability

The galvanized layer can provide effective protection in moderate corrosive environments (such as humid air, rainwater), preventing the Internal Tooth Lock Washers Steel Zinc from rusting and thus ensuring long-lasting anti-loosening performance.

（2）High cost-effectiveness

This combination is one of the most common anti-loosening washer options on the market. While ensuring excellent rust prevention and anti-loosening performance, it offers extremely competitive costs.

（3）Uniformity of materials and standards

The raw material we mostly use is spring steel. Its hardness normally sits between 350 and 425 HV. For some higher-strength versions, hardness can go up to 420 to 510 HV.Most of our items follow international standards like DIN 6797J for internal tooth type, so it’s easy for bulk purchasing and works well with global supply chains.

（4）A wide range of colors

In addition to the common silver-white (bright galvanized), there are also blue galvanized and black zinc options, among others, to meet specific appearance or temperature requirements.

Application scenario

In hydraulic, pneumatic and fuel systems, Internal Tooth Lock Washers Steel Zinc are highly cost-effective and highly versatile solutions for anti-loosening.

（1）Automotive industry

It is widely used in engine brackets, chassis frames, etc. in environments with strong vibrations and high stress. By distributing loads and enhancing friction, it ensures the long-term reliability of the connection and prevents key bolts from loosening.

（2）Industrial machinery and automation equipment

Internal Tooth Lock Washers Steel Zinc are used to withstand dynamic loads and are highly suitable for use in machinery or materials that are frequently subjected to vibration or continuous movement. Industrial machinery is one of its typical application fields. This includes various scenarios such as pumps, compressors, machine tools, etc.

（3）Electrical and Electronic Applications

The internal teeth can penetrate the paint or oxide layer, thereby forming a reliable electrical path. Therefore, they are widely used in electrical control cabinets, grounding connections, and other scenarios where conductivity is required.

（4）Household appliances

It’s widely used in home appliances like washing machines and dryers. These devices have parts that spin and vibrate while running, and this part keeps the screws from coming loose even after long periods of use.

（5）Hardware and DIY

As a standard component, it can be used in various general fastening repair projects, as well as in construction, machinery and general maintenance tasks.

Internal Tooth Lock Washers Steel Zinc

M2	2.2	2.34	4.20	4.5	0.28	0.32
M2.5	2.7	2.84	5.20	5.5	0.37	0.43
M3	3.2	3.38	5.70	6.0	0.37	0.43
M3.5	3.7	3.88	6.64	7.0	0.47	0.53
M4	4.3	4.48	7.64	8.0	0.47	0.53
M5	5.3	5.48	9.64	10.0	0.57	0.63
M6	6.4	6.62	10.57	11.0	0.67	0.73
M7	7.4	7.62	12.07	12.5	0.77	0.83
M8	8.4	8.62	14.57	15.0	0.77	0.83
M10	10.5	10.77	17.57	18.0	0.87	0.93
M12	13.0	13.27	19.98	20.5	0.96	1.04
M14	15.0	15.27	23.48	24.0	0.96	1.04
M16	17.0	17.27	25.48	26.0	1.16	1.24
M18	19.0	19.33	29.48	30.0	1.36	1.44
M20	21.0	21.33	32.38	33.0	1.36	1.44
M24	25.0	25.33	37.38	38.0	1.45	1.55
Informtion and drawing Provided are reference only