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1、American National and Unified Coarse andFine Thread Dime nsions and Tap Drill Sizes美标粗细螺纹规格和底孔钻头对照表螺纹规格螺牙样 式外径尺寸1螺距尺寸螺纹根部 尺寸r底孔钻头 约为全螺 纹的75%底孔钻头 直径粗 牙细牙ISizeThreads per inchOutside Diameter InchesPitch Dianketer h icliesRoot Diameter InchesTap Drill Apprui, 75% Firil Thr&aclDecimal Equiv. of g Drill
2、NO UNCNF UNF01223344556456胡40408072 轴5&4S44.0600 .0730&730 .OSBO .oaeo .0990.1120 .1120 .125017S0.0519 .0&2& .0640 .0744.0855 .C&74.0953 .0985.1088 .1 in?JH3B .0527 .0550 .0628.0657.0719.0759.07950S49XO2609553/6T5353505047 牺4342 牺yr,04的 .0595 .0595 .0700 .0700 07B5 oew .090 .0935 .1015 on668S101012I
3、232322424403&322&neo13B0 1MD1G4O .1900 1900 2160.2100.1177 l121B .1437 .1+GO .1529 .1697 .1日加 J 923.09741055,1234Am.1359,14941619J09C3633却26211651065 .1130136013GO .147015901770 .1900诃1/4*30佃161413曲2424202050006000J2175 269 2764 2854 .3344 .3479 .3911 .4090 .4500 .46754001.435173FI 5/16-Q U 254 27/6
4、4 2S/64*4519附3/4“3/4 7ZT 附12111091Sia1B14.5625.5625.6250.6250.75007500S750&750J6O84J5264J5&6OJ53A9.6850.70948D2382拥*4542.4903.5069.5528 .6201.7307.732233W 17/32* 37/64* 2-1/32r11/16* 49W13f16*4844.5156.5312.5751.06626S75756 ,ff125螺纹规格螺牙样 式外径尺寸螺距尺寸螺纹根部 尺寸底孔钻头 约为全螺 纹的75%底孔钻头 直径粗 牙细 牙SdePhreaih ptrind)
5、OutsideDiameterPitch Dtauietei Inci 励Root Dianietef kicheaTap Drill Approx. 75% rullllrtiddDecimal Eqiriv.of Top DrillNCUNCNF UNFr&一1.0000.83767/r750r121.0000&459B&175964”.2197112501 0322.930463/64”勺344i vr121.12501 7091.016811.C4C91 vr71.25001.15721.O&441 6旷1 10941 w121.2500tian1.1418111/BT1.1719i
6、a/r&1J7501.26671.15S51 7/32*121371 a/r121J7501逊1.266S1伯曲1 1/2*&1 50001 M171.28351 11/32*1.34371 1/2121.50001.4459L39181 27/M14?19i a/r5175001 &aoi1.4 219/i r1.5625莒4 1/2J.OOOO1 &6S71.71131 25/32*t7ftl221/44V22 25002.10571.961321/3 若ZC3132UT41/22.50002.W762175?2他225W2 3/r4-?.75O02.S8762.425221ZTZ500Q3*43.00002 &3762167522 W217M031/443.25003&762.52523T3.CDOO31/243.5000333763L17523 vr3.350043.75003.5S763.425?31/273.5Q0Dr4-4.00003.17861675?3S/4113.75002
美标螺丝规格
