Fax: 86-21-2098 3219
E-mail: info@techstamping.com
skype: technical.stamping2
 Home > FAQ     

What’s DIN?

DIN - Deutsches Institut für Normung (German Institute for Standards)

The vast majority of metric fasteners are presently manufactured to this standard which was created long before ISO standards. There are DIN standards for just about everything. DIN standards are currently being revised to more closely match ISO standards.

What’s JIS?

JIS - Japanese Industrial Standard

Although mainly based on DIN, some standards have been modified based on the needs of the Japanese market. Washers used in most electronic equipment manufactured in Japan fall under the JIS standard.

What’s ISO?

ISO - International Standard Organization

Founded in 1946 this organization publishes standards which individual countries have to vote on and are asked to apply. Currently ISO is comprised of more than 90 member countries. ISO’s standards for metric fasteners are rapidly gaining more recognition and in the years to come will probably become the world standard.

What’s ANSI?

ANSI - American National Standard Institute

A US organization that has developed standards which are essentially in agreement with ISO standards.

What materials are available?

Carbon steels and stainless steel are most widely used in producing metal washer. We can also manufacture Washer Products from a wide range of temperature and corrosion resistant material to suit your application.

How many kinds of Metal Washers are available in your company?

We produce and export Ribbed Conical Washers(including Contact Washer, Safety Washers and Sperrkant Washers), Disc Spring Washer(including Belleville Washers and Conical Spring Washer), Machinery Bushing Washers(including heavy, light and Medium ones), Hardended and Structural Washers, Flat Washers(Fender Washers), series of Lock Washers Retaining Rings, Twins Lock Washers, Stamping Parts products and many others custom washers as you request.

Can a metal washer product be re-used?

As long as Washers has no signs of damage and the overall height is still within tolerance, then the washers can be reused.

Do the inside and outside dimensions change under compression?

Yes, the dimensions of washers do change under compression but as long as the recommended guide clearance is applied, it will not cause any problems.