# Handan Jootlock New Materials Technology Co., Ltd. is a manufacturer of French washers, butterfly washers, double-layer self-locking washers and double-sided tooth anti-loosening washers

> Handan Jootlock New Materials Technology Co., Ltd. is a high-tech enterprise specializing in the research and development, production and sales of high-end anti-loosening fasteners. It has a production base in Yongnian, Handan and an operation center in Shahe, Xingtai. Relying on the advantages of the hardware industry cluster in southern Hebei, it is deeply engaged in the field of precision connection and is committed to providing safe and reliable fastening solutions for global customers.

## ABOUT US
- [Company Profile](https://en.jootlock.com/about/)
- [Equipment](https://en.jootlock.com/equipment/)
- [Culture](https://en.jootlock.com/culture/)

## PRODUCTS
- [PRODUCTS](https://en.jootlock.com/product/)
- [Double-layer self-locking washer](https://en.jootlock.com/shuangdiezisuodianquan2/)
- [Double-layer self-locking washer](https://en.jootlock.com/326.html): Standard: DIN25201 German standard wedge-shaped self-locking gasket, commonly known in the industry …
- [Butterfly washer](https://en.jootlock.com/Butterfly-washer/)
- [Butterfly gasket](https://en.jootlock.com/325.html): Standard: DIN6796 (current version DIN6796-2009), conical disc spring washer specially designed for …
- [French gasket](https://en.jootlock.com/fashidianquan2/)
- [NF E25-511 French gasket](https://en.jootlock.com/324.html): Full name: NF E25-511 French single-sided kered conical disc anti-loosening Gasket, commonly known i…
- [Double-sided tooth anti-loosening gasket](https://en.jootlock.com/shuangmianchifangsongdianquan2/)
- [Double-sided tooth anti-loosening gasket](https://en.jootlock.com/327.html): Standard: DIN9250 (equivalent to JB/ZQ4340 in China), divided into two series: S light/VS heavy ⚠️ K…

## NEWS
- [NEWS](https://en.jootlock.com/news/)
- [Upgrading high-end equipment, butterfly washers and special anti-loosening washers expand the market of aerospace, chemical and precision machinery](https://en.jootlock.com/343.html): Recently, butterfly washers and double-sided anti loosening washers have been continuously applied i…
- [The demand for anti-loosening gaskets has exploded driven by new energy, and overseas orders for photovoltaic brackets have grown significantly](https://en.jootlock.com/342.html): In 2026, the construction of photovoltaic power stations will continue to expand. Strong outdoor win…
- [The localization of high-end anti-loosening gaskets is accelerating, and imported products are being replaced in batches in rail transit](https://en.jootlock.com/341.html): In the first half of 2026, domestic fastener manufacturers' French conical anti-loosening washers an…

## APPLICATION
- [APPLICATION](https://en.jootlock.com/Product-application/)
- [Application of double-sided tooth anti-loosening washers](https://en.jootlock.com/332.html): Double-sided tooth anti-loosening gasket, with closely interlocking tooth surfaces, is applied in pr…
- [Double layered self-locking washer application](https://en.jootlock.com/333.html): Double layered self-locking washers are suitable for the photovoltaic industry. They can withstand s…
- [Application of double-sided tooth anti-loosening washers](https://en.jootlock.com/331.html): The double-sided tooth anti-loosening gasket relies on the meshing of double-sided tooth patterns an…
- [Double layered self-locking washer application](https://en.jootlock.com/330.html): The double-layer self-locking washer, relying on the interlocking structure of interlocking, is wide…
- [Butterfly washer application](https://en.jootlock.com/329.html): Butterfly washers, with their elastic compensation capabilities, are applied in the aerospace field.…
- [French gasket application](https://en.jootlock.com/328.html): The French conical knurled anti-loosening gasket relies on the interlocking of conical surfaces for …

## EVALUATE
- [EVALUATE](https://en.jootlock.com/Customer-review/)
- [LinSen](https://en.jootlock.com/340.html): We use butterfly washers and double-sided toothed anti loosening washers in precision machinery and …
- [Olivia Chen](https://en.jootlock.com/339.html): We are testing your company's double-layer self-locking washers on photovoltaic brackets in the dese…
- [Markus Weber](https://en.jootlock.com/338.html): We have been using your judicial gaskets in the bogies of rail vehicles for 18 months, and the bolts…

## CONTACT US
- [CONTACT US](https://en.jootlock.com/con/)

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