| 
      
        | M8x1 ≤ D ≤ M16x1.5 | 維氏硬度 HV |  
        | M16x1.5 < D ≤ M39x3 |  
        | M8x1 ≤ D ≤ M16x1.5 | 布氏硬度 HB |  
        | M16x1.5 < D ≤ M39x3 |  
        | M8x1 ≤ D ≤ M16x1.5 | 洛氏硬度 HRC |  
        | M16x1.5 < D ≤ M39x3 |  | 
                            
                                | 188 | 302 | 272 | 353 | 175 | 302 | 188 | 302 | 250① | 353② | 295③ | 353 | 295 | 353 |  
                                | 188 | 302 | 272 | 353 | 190 | 302 | 233 | 302 | 295 | 353 | 260 | 353 | / | / |  
                                | 179 | 287 | 259 | 336 | 166 | 287 | 179 | 287 | 238① | 336② | 280③ | 336 | 280 | 336 |  
                                | 179 | 287 | 259 | 336 | 181 | 287 | 221 | 287 | 280 | 336 | 247 | 336 | / | / |  
                                | / | 30 | 26 | 36 | / | 30 | / | 30 | 22.2① | 36② | 29③ | 36 | 29 | 36 |  
                                | / | 30 | 26 | 36 | / | 30 | / | 30 | 29.2 | 36 | 24 | 36 | / | / |  |