Common types of fits

2026/05/07

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Table of Commonly Used Hole-to-Hole Clearances

Reference holeShaft tolerance class
Interference fitIntermediate fitInterference fit
H6     g5h5js5k5m5       
    f6g6h6js6k6m6n6*p6*     
H7    f6g6h6js6k6m6n6p6*r6*s6t6u6x6
   e7f7 h7js7         
H8    f7 h7          
   e8f8 h8          
  d9e9             
H9  d8e8  h8          
 c9d9e9  h9          
H10b9c9d9              

*Note: The fit of parts marked with an asterisk may vary depending on the dimensional category.

Common hole-based fit notation (for reference dimensions exceeding 10 mm but not exceeding 18 mm)

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Table of Commonly Used Shaft-to-Bore Fits

Reference axisHole tolerance class
Interference fitIntermediate fitInterference fit
h5      H6JS6K6M6N6*P6     
h6    F6G6H6JS6K6M6N6P6*     
    F7G7H7JS7K7M7N7P7*R7S7T7U7X7
h7   E7F7 H7          
    F8 H8          
h8  D8E8F8 H8          
  D9E9  H9          
h9  D8E8  H8          
 C9D9E9  H9          
B10C10D10              

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*Note: The fit of parts marked with an asterisk may vary depending on the dimensional category.

Common shaft reference fit diagrams (for reference dimensions exceeding 10 mm but not exceeding 18 mm)

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