美标粗细螺纹规格和底孔钻头直径对照表2879.pdf

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1、.000REFERENCETABLESAmericanNationalandUnifiedCoarseandFineThreadDimensionsandTapDrillSizes1pp=pitch=No.threadperinchfd=depth=pX.64951960ºfdf=flat=p8.6495pitchdiameter=D–NThreadsperinchOutsidePitchRootTapDrillDecimalNCNFDiameterDiameterDiameterApprox.75%Equiv.ofSizeUNCUNF

2、InchesInchesInchesFullThreadTapDrill0–80.0600.0519.04383/640.0469164–.0730.0629.052753.05951–72.0730.0640.055053.0595256–.0860.0744.062850.07002–64.0860.0759.065750.0700348–.0990.0855.071947.07853–56.0990.0874.075846.0810440–.1120.0958.079543.08904–48.1120.0985.084942.09

3、35540–.1250.1088.092538.10155–44.1250.1102.095537.1040632–.1380.1177.097436.10656–40.1380.1218.105533.1130832–.1640.1437.123429.13608–36.1640.1460.127929.13601024–.1900.1629.135926.147010–32.1900.1697.149421.15901224–.2160.1889.161916.177012–28.2160.1928.169615.18001/402

4、0–.2500.2175.18507.20101/40–28.2500.2268.20363.21305/16018–.3125.2764.2403F.25705/160–24.3125.2854.2584I.27203/8016–.3750.3344.29385/160.31253/80–24.3750.3479.3209Q.33207/16014–.4375.3911.3447U.36807/160–20.4375.4050.372625/640.39061/2013–.5000.4500.400127/640.42191/20–2

5、0.5000.4675.435129/640.45319/16012–.5625.5084.454231/640.48449/160–18.5625.5264.490333/640.51565/8011–.6250.5660.506917/320.53125/80–18.6250.5889.552837/640.57813/4010–.7500.6850.620121/320.65623/40–16.7500.7094.668811/160.68757/809–.8750.8028.730749/640.76567/80–14.8750

6、.8286.782213/160.8125(Continuedonnextpage.).000REFERENCETABLESAmericanNationalandUnifiedCoarseandFineThreadDimensionsandTapDrillSizes(continued)ThreadsperinchOutsidePitchRootTapDrillDecimalNCNFDiameterDiameterDiameterApprox.75%Equiv.ofSizeUNCUNFInchesInchesInchesFullThre

7、adTapDrill108–1.0000.9188.83767/80.875010–121.0000.9459.891759/640.921911/807–1.12501.0322.939463/640.984411/80–121.12501.07091.016813/6401.046911/407–1.25001.15721.064417/6401.109411/40–121.25001.19591.1418111/6401.171913/806–1.37501.26671.158517/3201.218713/80–121.3750

8、1.32091.2668119/6401.296911/206–1.50001.39171.2835111/3201.343711/20–121.50001.44591.3918127/6401.42191