| CL' symbol | Standard | Steel Grade | Application |
| W6006-22A | JIS G 3507 | SWRCH 6A - 22A | Screw、Bolt、Nut、Rivet、Shaft、Pin。
|
| W6A35C | CSC | C-CH35ACR | |
| W6A40C | CSC | C-CH40ACR | |
| W6B21 | CSC | 10B21 |
| CL' symbol | Standard | Steel Grade | Application |
| W6006-22A | JIS G 3507 | SWRCH 6A - 22A | Screw、Bolt、Nut、Rivet、Shaft、Pin。
|
| W6A35C | CSC | C-CH35ACR | |
| W6A40C | CSC | C-CH40ACR | |
| W6B21 | CSC | 10B21 |