Huys manufactures and supplies millions of resistance welding caps around the world from our three facilities. We offer the full range of machined or cold-formed caps in standard or custom sizes. Welding caps/tips can be specified in the copper alloy of your choice, with our standard alloys being:
- Class 1: C15000 Zirconium Copper
- Class 2: C18150 Chromium Zirconium Copper
- Class 3: C18000 Nickel Silicon Chromium Copper (Beryllium-Free)
- Class 20: C15760 (AL60 or Glidcop®) Aluminum Dispersion Strengthened Copper
(Glidcop® is a registered trademark of Höganäs AB.)
The 3 most popular and distinct cap taper families are specified below:
RWMA Standards
We carry male and female RWMA standard caps sizes (4, 5, 6, 7). Female caps fit over a male shank and are typically cheaper and easier to remove. Some believe male caps last longer and provide more consistent welds due to their more substantial structure. Since male caps fit into a female shank, their tapers are also better protected from damage. This not only prolongs the life of the shank, but also reduces the chances of leaks.
| Download | Description |
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 | Our RWMA Caps Catalogue Pages |
Japanese Standards
Our Japanese taper spot welding caps are manufactured to the 1/9.6 taper and dimensional standards of the industry. They are sometimes referred to in North America as “Asian” caps. Japanese taper spot welding caps are extremely popular due to the popularity of Japanese automobiles and highly standardized supply chain. We can produce them with or without a dressline/ring groove. Examples of common designs include the T-16-D and T-13-D.
| Download | Description |
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Our Japanese Style Caps Catalogue Page |
ISO (European) Standards
Our ISO Metric spot welding caps adhere to the ISO standards for the 1/10 taper and dimensions laid down in ISO 5821 and ISO 5182. ISO Metric spot welding caps are available in male or female styles, although the male tips are extremely uncommon. There are several standard nose geometries, but we can also make custom geometries for specific requirements.
| Download | Description |
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Our ISO Caps Catalogue Pages |