攻牙下孔徑規格表
公 制
英 制
粗牙
細牙
粗牙
細牙
6H
6G
6H
6G
2A
3A
2A
3A
M1.0-0.25P M1.6-0.35P M2.5-0.35P M4.0-0.5P UNC1-64 UNC1-64 UNF0-80 UNF0-80

M1.2-0.25P

M2.0-0.4P M3.0-0.35P M5.0-0.5P UNC2-56 UNC2-56 UNF1-72 UNF1-72
M1.4-0.3P M2.2-0.45P M3.5-0.35P M6.0-0.5P UNC3-48 UNC3-48 UNF2-64 UNF2-64
M1.6-0.35P M2.3-0.4P M4.0-0.5P M6.0-0.75P UNC4-40 UNC4-40 UNF3-56 UNF3-56
M1.7-0.35P M2.5-0.45P M5.0-0.5P M8.0-0.75P UNC5-40 UNC5-40 UNF4-48 UNF4-48
M2.0-0.4P M2.6-0.45P M6.0-0.5P M8.0-1.0P UNC6-32 UNC6-32 UNF5-44 UNF5-44
M2.2-0.45P M3.0-0.5P M6.0-0.75P M9.0-1.0P UNC8-32 UNC8-32 UNF6-40 UNF6-40
M2.3-0.4P M3.5-0.6P M8.0-0.75P M10.0-1.0P UNC10-24 UNC10-24 UNF8-36 UNF8-36
M2.5-0.45P M4.0-0.7P M8.0-1.0P M12.0-1.0P UNC12-24 UNC12-24 UNF10-32 UNF10-32
M2.6-0.45P M5.0-0.8P M9.0-1.0P M14.0-1.0P UNC1/4-20 UNC1/4-20 UNF12-28 UNF12-28

M3.0-0.5P

M6.0-1.0P M10.0-1.0P M16.0-1.0P UNC5/16-18 UNC5/16-18 UNF1/4-28 UNF1/4-28
M3.5-0.6P M8.0-1.25P M12.0-1.0M M18.0-1.0P UNC3/8-16 UNC3/8-16 UNF5/16-24 UNF5/16-24
M4.0-0.7P M10-1.5P M14.0-1.0P M20.0-1.0P UNC7/16-14 UNC7/19-14 UNF3/8-24 UNF3/8-24
M5.0-0.8P M12-1.75P M16.0-1.0P M22.0-1.0P UNC1/2-13 UNC1/2-13 UNF7/16-20 UNF7/16-20
M6.0-1.0P M14-2.0P M18.0-1.0P M24.0-1.0P UNC9/16-12 UNC9/16-12 UNF1/2-20 UNF1/2-20
M8.0-1.25P M16-2.0P M20.0-1.0P M10.0-1.25P UNC5/8-11 UNC5/8-11 UNF9/16-18 UNF9/16-18
M10.0-1.5P M18.2.5P M22.0-1.0P M12.0-1.25P UNC3/4-10 UNC3/4-10 UNF5/8-18 UNF5/8-18
M12.0-1.75P M20-2.5P M24.0-1.0P M12.0-1.5P UNC7/8-9 UNC7/8-9 UNF3/4-16 UNF3/4-16
M14.0-2.0P   M10.0-1.25P M14.0-1.5P UNC1-8 UNC1-8 UNF7/8-14 UNF7/8-14
M16.0-2.0P   M12.0-1.25P M16.0-1.5P UNC1-1/8-7   UNF1-12 UNF1-12
M18.0-2.5P   M12.0-1.5P M18.0-1.5P UNC1-1/4-7   UNF1-1/8-12  
M20.0-2.5P   M14.0-1.5P M20.0-1.5P UNC1-3/8-6   UNF1-1/4-12  
M22.0-2.5P   M16.0-1.5P M22.0-1.5P UNC1-1/2-6   UNF1-3/8-12  
M24.0-3.0P   M18.0-1.5P M24.0-1.5P     UNF1-1/2-12  
M27.0-3.0P   M20.0-1.5P M18.0-2.0P        
M30.0-3.5P   M22.0-1.5P M20.0-2.0P        
M36.0-4.0P   M24.0-1.5P          
M39.0-4.0P   M18.0-2.0P           
    M20.0-2.0P          

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