英制普通螺纹(惠氏螺纹)--小螺纹系列(BA)名义尺寸
BA牙型代号大径
mm
d=D螺距
mm
p每英寸牙数
tpi中径
mm
d2=D2小径
外螺纹
d3牙型高
H1底孔直径
mmNo.14BA1.0000.230110.40.8600.7200.1400.75No.13BA1.2000.250101.61.0500.9000.1500.95No.12BA1.3000.28090.711.1300.9600.1701.00No.11BA1.5000.31081.931.3151.1300.1851.20No.10BA1.7000.35072.571.4901.2800.2101.35No.9BA1.9000.39065.121.6651.4300.2351.50No.8BA2.2000.43059.071.9401.6800.2601.80No.7BA2.5000.48052.922.2101.9200.2902.00No.6BA2.8000.53047.922.4802.1600.3202.30No.5BA3.2000.59043.052.8452.4900.3552.60No.4BA3.6000.66038.483.2052.8100.3952.95No.3BA4.1000.73034.793.6603.2200.4403.40No.2BA4.7000.81031.354.2153.7300.4853.90No.1BA5.3000.90028.224.7604.2200.5404.40No.0BA6.0001.00025.405.4004.8000.6005.00
