| CL' symbol | Standard | Steel Grade | Application |
| W7415R (Q) | JIS G 3509-1 | SCM 415(H)RCH | Screw、Bolt、Nut、Rivet。 |
| W7420R (Q) | SCM 420(H)RCH | ||
| W7435R (Q) | SCM 435(H)RCH | ||
| W7440R (Q) | SCM 440(H)RCH | ||
| W7N439 | JIS G 4053 | SNCM439 | Air Tool Drill、Chisel、Impact Socket。 |
| W7N439 | SNCM439 | ||
| W76150 | AISI | 6150 | Screwdriver、Air Tool。 |
| W76155 | CSC. | 55CRV | |
| W78660 | AISI | 8660 |