| 1/00 | Buttons |
| 1/02 | Buttons characterised by their material |
| 1/04 | Buttons Ornamental buttons |
| 1/06 | Buttons Assembling of buttons |
| 1/08 | Buttons Constructional characteristics |
| 1/10 | Buttons Constructional characteristics washable |
| 1/12 | Buttons Constructional characteristics covered by fabric |
| 1/14 | Buttons Constructional characteristics with replaceable coverings |
| 1/16 | Buttons Constructional characteristics with protective coverings |
| 1/18 | Buttons adapted for special ways of fastening |
| 1/20 | Buttons adapted for special ways of fastening attached by thread visible to the front |
| 1/22 | Buttons adapted for special ways of fastening attached by thread not visible to the front |
| 1/24 | Buttons adapted for special ways of fastening attached by thread not visible to the front Eye-buttons |
| 1/26 | Buttons adapted for special ways of fastening with resilient shank |
| 1/28 | Buttons adapted for special ways of fastening with shank and counterpiece |
| 1/30 | Buttons adapted for special ways of fastening with shank and counterpiece Screw-buttons |
| 1/32 | Buttons adapted for special ways of fastening with shank and counterpiece Shank inserted into counterpiece and locked by sliding or rotating |
| 1/34 | Buttons adapted for special ways of fastening with shank and counterpiece with snap-action counterpiece |
| 1/36 | Buttons adapted for special ways of fastening with shank and counterpiece with counterpiece in the form of cotter, split-pin, or the like |
| 1/38 | Buttons adapted for special ways of fastening Clamping by spring action |